Saturday, October 24, 2009

What do you call the films for X-rays?

It starts with the letter F followed by L and ends with the letter Y.
Thanks.
Answers:
X-ray films are called radiographs, but I am wondering if you are thinking of fluoroscopy. "Fluoroscopy is a technique for obtaining "live" X-ray images of a living patient. The Radiologist uses a switch to control an X-Ray beam that is transmitted through the patient. The X-rays then strike a fluorescent plate that is coupled to an "image intensifier" that is (in turn) coupled to a television camera. The Radiologist can then watch the images "live" on a TV monitor. Fluoroscopy is often used to observe the digestive tract (Upper GI series - Barium Swallow, Lower GI series - Barium Enema or "BE"). "http://rad.usuhs.mil/rad/home/flouro.htm.
if you are talking X rated films, then the word is filthy.
y do u ask questions whose answers u already know?
Well we call them radiographs..
same as Lissa's

what do you call the equipment that brings back the heartbeat of a person?

it can be seen on different TV shows or movies.
it is also used when a patient is soon to die.
Answers:
A defibrillator is a medical device used in the defibrillation of the heart. It consists of a central unit and a set of two electrodes. The central unit provides a source of power and control. The two electrodes are placed directly on or in the patient. The device is designed to deliver an electric shock to the patient, in an effort to stop ventricular fibrillation. Ventricular fibrillation is a cardiac condition that consists of a lack of coordination of the contraction of the muscle tissue of the large chambers of the heart that eventually leads to the heart stopping altogether.As you can see the defibrillator doesn't actually start a stopped heart, it only corrects the poor pumping action of the heart.
Sounds like you're talking about a defibrillator.
A defibrillator.
a defibrillator? The thing that shocks them?
It's called a defibrillator. There are portable ones now for schools %26 colleges for when people need to have their hearts shocked.
defibillator
For me, it's Boobs.
The cardiac defibrilator. Heart muscles stop working when circulation is interrupted, because it stops generating electrical impulses. An external electric impulse may start a group of muscles in these situations. If circulation is thus restored, there is a chance of surviving the event. The defibrilator provides an external electric impulse for these situations.
The device is called a cardiac defibrillator. When the heart is in atrial fibrillation the heart muscle is suffering from muscle spasm and does not pump blood in and out of the heart in normal fashion. The defibrillator send a electric shock through the heart to interupt the spasms and start normal cardiac function.

what do you call that reflex after you void or micturate?


Answers:
Which reflex?
I don't know, but that rug really pulled the room together.
sphincter
Mechanism of Urination
The action potentials are carried by sensory neurons to the sacral segments of the spinal cord through the pelvic nerves the parasympathetic fibers carry the action potentials to the urinary bladder in the pelvic nerves. This causes the wall of the bladder to contract. In addition, decreased somatic motor action potentials cause the external urinary sphincter, which consists of skeletal muscle, to relax. When the external urinary sphincter is relaxed urine will flow from the urinary bladder when the pressure there is great enough to force urine to flow through the urethra. The micturition reflex normally produces a series of contractions of the urinary bladder.Action potentials carried by sensory neurons from stretch receptors in the urinary bladder wall also ascend the spinal cord to a micturition center in the pons and to the cerebrum. Descending potentials are sent from these areas of the brain to the sacral region of the spinal cord, where they modify the activity of the micturition reflex in the spinal cord. The micturition reflex, integrated in the spinal cord, predominates in infants. The ability to voluntarily inhibit micturition develops at the age of 2-3 years, and subsequently, the influence of the pons and cerebrum on the spinal micturition reflex predominates. The micturition reflex integrated in the spinal cord is automatic, but it is either stimulated or inhibited by descending action potentials. Higher brain centers prevent micturition by sending action potentials from the cerebrum and pons through spinal pathways to inhibit the spinal micturition reflex. Consequently, parasympathetic stimulation of the urinary bladder is inhibited and somatic motor neurons that keep the external urinary sphincter contracted are stimulated.The pressure in the urinary bladder increases rapidly once its volume exceeds approximately 400-500 ml, and there is an increase in the frequency of action potentials carried by sensory neurons. The increased frequency of action potentials conducted by the ascending spinal pathways to the pons and cerebrum results in an increased desire to urinate.Voluntary initiation of micturition involves an increase in action potentials sent from the cerebrum to facilitate the micturition reflex and to voluntarily relax the external urinary sphincter. In addition to facilitating the micturition reflex, there is an increased voluntary contraction of abdominal muscles, which causes an increase in abdominal pressure. This enhances the micturition reflex by increasing the pressure applied to the urinary bladder wall.
Anatomic Considerations
The smooth muscle of the bladder, like that of the ureters, is arranged in spiral, longitudinal, and circular bundles. Contraction of this muscle, which is called the detrusor muscle, is mainly responsible for emptying the bladder during urination (micturition). Muscle bundles pass on either side of the urethra, and these fibers are sometimes called the internal urethral sphincter, although they do not encircle the urethra. Farther along the urethra is a sphincter of skeletal muscle, the sphincter of the membranous urethra (external urethral sphincter). The bladder epithelium is made up of a superficial layer of flat cells and a deep layer of cuboidal cells.
Micturition
The physiology of micturition and the physiologic basis of its disorders are subjects about which there is much confusion. Micturition is fundamentally a spinal reflex facilitated and inhibited by higher brain centers and, like defecation, subject to voluntary facilitation and inhibition. Urine enters the bladder without producing much increase in intravesical pressure until the viscus is well filled. In addition, like other types of smooth muscle, the bladder muscle has the property of plasticity; when it is stretched, the tension initially produced is not maintained. The relation between intravesical pressure and volume can be studied by inserting a catheter and emptying the bladder, then recording the pressure while the bladder is filled with 50-mL increments of water or air (cystometry). A plot of intravesical pressure against the volume of fluid in the bladder is called a cystometrogram . The curve shows an initial slight rise in pressure when the first increments in volume are produced; a long, nearly flat segment as further increments are produced; and a sudden, sharp rise in pressure as the micturition reflex is triggered. These three components are sometimes called segments Ia, Ib, and II. The first urge to void is felt at a bladder volume of about 150 mL, and a marked sense of fullness at about 400 mL. The flatness of segment Ib is a manifestation of the law of Laplace . This law states that the pressure in a spherical viscus is equal to twice the wall tension divided by the radius. In the case of the bladder, the tension increases as the organ fills, but so does the radius. Therefore, the pressure increase is slight until the organ is relatively full.During micturition, the perineal muscles and external urethral sphincter are relaxed; the detrusor muscle contracts; and urine passes out through the urethra. The bands of smooth muscle on either side of the urethra apparently play no role in micturition, and their main function is believed to be the prevention of reflux of semen into the bladder during ejaculation.The mechanism by which voluntary urination is initiated remains unsettled. One of the initial events is relaxation of the muscles of the pelvic floor, and this may cause a sufficient downward tug on the detrusor muscle to initiate its contraction. The perineal muscles and external sphincter can be contracted voluntarily, preventing urine from passing down the urethra or interrupting the flow once urination has begun. It is through the learned ability to maintain the external sphincter in a contracted state that adults are able to delay urination until the opportunity to void presents itself. After urination, the female urethra empties by gravity. Urine remaining in the urethra of the male is expelled by several contractions of the bulbospongiosus muscle.
Reflex Control
The bladder smooth muscle has some inherent contractile activity; however, when its nerve supply is intact, stretch receptors in the bladder wall initiate a reflex contraction that has a lower threshold than the inherent contractile response of the muscle. Fibers in the pelvic nerves are the afferent limb of the voiding reflex, and the parasympathetic fibers to the bladder that constitute the efferent limb also travel in these nerves. The reflex is integrated in the sacral portion of the spinal cord. In the adult, the volume of urine in the bladder that normally initiates a reflex contraction is about 300-400 mL. The sympathetic nerves to the bladder play no part in micturition, but they do mediate the contraction of the bladder muscle that prevents semen from entering the bladder during ejaculation.There is no small motor nerve system to the stretch receptors in the bladder wall; but the threshold for the voiding reflex, like the stretch reflexes, is adjusted by the activity of facilitatory and inhibitory centers in the brain stem. There is a facilitatory area in the pontine region and an inhibitory area in the midbrain. After transection of the brain stem just above the pons, the threshold is lowered and less bladder filling is required to trigger it, whereas after transection at the top of the midbrain, the threshold for the reflex is essentially normal. There is another facilitatory area in the posterior hypothalamus. In humans with lesions in the superior frontal gyrus, the desire to urinate is reduced and there is also difficulty in stopping micturition once it has commenced. However, stimulation experiments in animals indicate that other cortical areas also affect the process. The bladder can be made to contract by voluntary facilitation of the spinal voiding reflex when it contains only a few milliliters of urine. Voluntary contraction of the abdominal muscles aids the expulsion of urine by increasing the intra-abdominal pressure, but voiding can be initiated without straining even when the bladder is nearly empty.Thinking about sex preoccupies the brain to avoid much discomfort when constraining to urinate

what do you call a doctor.?

what do u call a doctor who does physical or clinical examination?
Answers:
In British education system, a doctor is a research scholar with a Ph.D. (doctor of philosophy) degree. He is called Ph.D. because he does research work on unsolved problems of that particular subject. But Americans have changed this definition as their universities award bachelors level degrees like M.D.(doctor of medicine) and J.D.(Juris Doctor).As to your original question, a doctor of medicine is called a physician if he performs physical or clinical examination, and a surgeon if he performs surgery. Then there are many types of specialists.
Physician
A physician.
physician
In the USA it is common to call them a PA, Physician's Assistant, or they might be your Primary Care Physician, your PCP.
Dr. Smith or Dr. Jones or whatever his name is.
Simply, a physician, but, medically, you would call a doctor an M.D.(medical doctor)
Information on Types of Doctors:
PRIMARY CARE
Generalists include both medical doctors (MDs) and doctors of osteopathic medicine (DOs). These types of Doctors usually specialize in family practice or internal medicine.
Specialists who are frequently sought directly by women for general primary care needs include the following:
OB/GYNs are types of Doctors who specialize in obstetrics and gynecology, including well women's health care and prenatal care.
Nurse practitioners (NPs) may be prepared in programs specific to women's health care including common gynecological concerns, routine health maintenance and screenings (such as a Pap smear), and family planning
Registered nurses (RNs) have graduated from a nursing program, have passed state board examinations, and are licensed by the state.
Licensed practical nurses (LPNs) are state-licensed caregivers who have been trained to care for the sick.
Advanced practice nurses have education and clinical experience beyond the basic training and licensing required of all RNs:
Nurse practitioners (NPs) are RNs with graduate training in primary care. The profession includes family (FNP), pediatric (PNP), adult (ANP), and geriatric (GNP) specialties. In some states NPs can prescribe medications.
Clinical nurse specialists (CNSs) are RNs who have graduate training in a specialized clinical field such as cardiac, psychiatric, or community health.
Certified nurse midwives (CNMs) are RNs with graduate training in women's health care needs, including prenatal, labor and delivery, and postpartum care.
Certified registered nurse anesthetists (CRNAs) are RNs with graduate training in the field of anesthesia.
A physician assistant (PA) is trained in the family practice model for a primary care role.
SPECIALTY CARE
Common specialty areas to which the patient is typically referred by the primary care provider:
Anesthesiology -- anesthesia, either general or spinal block for surgeries and some forms of pain control
Cardiology -- heart disorders
Dermatology -- skin disorders
Endocrinology -- hormonal and metabolic disorders, including diabetes
Gastroenterology -- digestive system disorders
General surgery -- common surgeries involving any part of the body
Gynecology/obstetrics -- pregnancy (normal or problematic) and women's reproductive tract disorders
Immunology -- disorders of the immune system and allergies
Infectious disease -- infections affecting the tissues of any body system
Nephrology -- kidney disorders
Neurology -- nervous system disorders
Oncology -- cancer and some other diseases that resist treatment
Ophthalmology -- eye disorders and surgery
Orthopedics -- bone and connective tissue disorders
Otorhinolaryngology -- ear, nose, and throat (ENT) disorders
Physical and rehabilitative medicine -- coordinate return to optimal functioning in individuals with musculoskeletal and neurological disorders (such as low back injury, spinal cord injuries, and stroke)
Psychiatry -- emotional or mental disorders
Pulmonary (lung) -- respiratory tract disorders
Radiology -- X-rays and related procedures (such as ultrasound, CT, and MRI)
Urology -- disorders of the male reproductive and urinary tracts and the female urinary tract
A general practice doctor should do those things.
What you describe here would be a physician, a GENUINE doctor.And what do you call a "doctor" who judges you, disempowers you and forces you to stand still while they mutilate your minds and body ?? Answer: A Psychiatrist, a FAKE doctor.
Depend on how high his bill is.

What do we understand better , time or gravity?


Answers:
Time is a human invention. The only thing that exists is the here and now, the omnipresent now. The measuring of the cycles of nature are merely that. Reflection and anticipation are human traits designed to escape the omnipresent now and are manifested as the past and the future. My answer would therefore be time.
Time
We know what gravity is and where it comes from, what to do with it how to defy it and a lot more things than we know about time. We only know the outskirts of what "time" really is and what we measure does not do a thing, it only records it. We can not affect, we do not know what it can do and where it comes from. Time is one of the few things that not let anything get in its way.
We don't really know diddly about either one.
We know more about gravity than time.
We definitely know more about gravity. Our measurements of time aren't accurate. There are about 40 different calendars used in this world today. If our time measurements were accurate we wouldn't have leap year every four years.We don't have a complete understanding of time.
I think the two are intrinsically linked.
Time because we go by a schedule everyday no matter what we do.

what do we have to do in america or europe after we graduate?

what are we suppose to do when we graduate. I mean if I want to be a doctor then what will I do? Plz explain in detail
Answers:
From? In USA, Bachelors degree gets you into 4 years of medical school, which gets you an M.D. To practice you have to have a license. The exam (USMLE) is in 3 steps. the first 2 are done in med school (at least it is at UIC). After M.D. get into residency 3-5 years, depending on what you want to do. during or after 1st year of residency, you take step 3.
I will bend towards medical investigation and practice

What do UVA/UVB stand for?


Answers:
The UV in UVA/UVB/UVC means ultra violet light. The ABC are different wavelenghts of the light. Read an excerpt below from the article on the link for more explanation:
Sunlight has a profound effect on the skin causing premature skin aging, skin cancer, and a host of skin changes. Exposure to ultraviolet light, UVA or UVB, from sunlight accounts for 90% of the symptoms of premature skin aging. Many skin changes that were commonly believed to be due to aging, such as easy bruising, are actually a result of prolonged exposure to UV radiation.
What is UV?
The sun gives off ultraviolet radiation that we divide into categories based on the wavelength. UVC - 100 to 290 nm
UVB - 290 to 320 nm
UVA - 320 to 400 nm UVA was once thought to have a minor effect on skin damage, but now studies are showing that UVA is a major contributor to skin damage. UVA penetrates deeper into the skin and works more efficiently. The intensity of UVA radiation is more constant than UVB without the variations during the day and throughout the year. UVA is also not filtered by glass.
It has something to do with the type of ultraviolet rays that are emitted from the sun--and are bad for your skin. I forget, but each one causes a certain damage to the skin.
UVA is UltraViolet typeA. UVB is UltraViolet type B(Sun rays)
Ultraviolet A and Ultraviolet B. The terms are often used when talking about how skin is affected by UV rays.
UVB is what causes sunburn, and its what most sunscreens block best. UVA is what causes the most skin damage, including premature aging and cancer. :(There is a sunscreen that's been on the market in Europe for some time that does a good job of blocking both kinds, and its recently been approved for sale in the US. If that's where you are, you should start seeing it soon as an ingredient in sunscreens. Its called 'Parsol'.
Ultra Violet A(400鈥?15 nm), and Ultra Violet B (315鈥?80 nm)
Both are rays of light with different wavelengths.
UVA is light we see, and UVB is invisible, and responsible for vitamin synthesis. Both are damaging to the body, though it is harder to block UVA rays, due to it's "dark light" quality.
UVA
Ultraviolet Category AUVB
Ultraviolet Category BUVA represents the lower range of UV and UVB is the higher range.
UVB gives more damage.
Ultra Violet rays are diveded into 3 groups according to their wavelength/frequancy UV-A,B and C. UV-A has the longest wavelength and therefore less harmfull. UV-C has the largest frequancy so the cary more energy %26 therefore the most harmfull. for exact figurs see.
UVA light is also known as "dark-light" and, because of its longer wavelength, can penetrate most windows. It also penetrates deeper into the skin than UVB light and is thought to be a prime cause of wrinkles.
UVB light can cause skin cancer. The radiation excites DNA molecules in skin cells, causing covalent bonds to form between adjacent thymine bases, producing thymidine dimers. Thymidine dimers do not base pair normally, which can cause distortion of the DNA helix, stalled replication, gaps, and misincorporation. These can lead to mutations, which can result in cancerous growths. The mutagenicity of UV radiation can be easily observed in bacteria cultures. This cancer connection is one reason for concern about ozone depletion and the ozone hole.
Using the ultraviolet light (Wood's lamp), your doctor may be able to confirm a diagnosis of fungal infection or bacterial infection. Your doctor may also be able to gain insight into the cause of light- or dark-colored spots on your skin.
Please see the webpages for more details on Ultraviolet and Wood's lamp.
 

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