Cymothoa exigua is a tiny crustacean that sneaks up on a fish (specifically, a red snapper) and works its way in through the gills. Typical parasite behavior so far.
Then it attaches itself to the base of the fish's tongue, the tongue evidently being the tastiest part of the fish (get it!?). The parasite uses its claws to dig into the tongue and drink the fish's blood--and that's just the beginning
Cymothoa Exigua in Human
It is currently believed that Cymothoa Exigua are not harmful to humans unless picked up alive, in which case they can bite.
A tongue-eating parasite inside the mouth of a red snapper purchased from a London fishmonger recently revolted its buyer and fascinated scientists.
Previously, scientists believed fish infected with the parasite, nicknamed the "tongue louse," existed solely in the Gulf of California. The find in England suggests the parasite's range may be expanding, according to a recent press release issued by a museum in England.
But does the Cymothoa mouth-squatter leave its fishy friend tongueless? Of course not. It does what any crafty parasite would do and replaces the old tongue with its own body.
The fish is actually able to use the parasite just like a normal tongue, only it has to share all the food with its new friend. Yes, the whole foster-tongue thing seems like a pretty nice gesture on the part of ol' Cymothoa until you remember there was nothing wrong with the fish's old tongue in the first place.
Cymothoa Exigua Life cycle
Not much is known about the life cycle of Cymothoa Exigua. It exhibits sexual reproduction. It is likely that juveniles first attach to the gills of a fish and become males. As they mature, they become females, with mating likely occurring on the gills. If there is no female present, within a pair of two males, one male can turn into a female after it grows to 10mm in length. The female then makes its way to the fish's mouth where it uses its front claws to attach to the fish’s tongue.
Pigment Disorders and Birthmarks The mechanism that controls skin coloration is described above under “Skin Color.” Abnormalities in the creation and distribution of melanin result in the following disorders some of which are negligible.
These are small spots of brown pigment that frequently occur when fair-skinned people are exposed to the sun or to ultraviolet light. For those whose skin gets red rather than tan during such exposure, freckles are a protective device. In most cases, they recede in cold weather. A heavy freckle formation that is permanent can be covered somewhat by cosmetic preparations. No attempt should be made to remove freckles with commercial creams or solutions unless supervised by a physician
Adrenal Insufficiency Causes, Symptoms and Treatment Autoimmune adrenalitis is the most common cause of primary adrenal insufficiency. Adrenalitis caused by tuberculosis was once the most common cause. Autoimmune adrenalitis is sometimes accompanied by other autoimmune endocrine deficiencies, such as thyroid disease, diabetes mellitus, pernicious anemia, hypoparathyroidism, or ovarian failure (Table 14). Recently, AIDS and antiphospholipid syndrome have been cited as additional causes.
Iatrogenic tertiary adrenal insufficiency, a common secondary cause of adrenal insufficiency, results from suppression of hypothalamic-pituitary-adrenal function secondary to glucocorticoid administration. Secondary adrenal insufficiency may also result from pituitary or hypothalamic disease, as described earlier.
Symptoms of Heart Disease in Women Cardiovascular disease is the leading cause of death among American women, is more lethal in women than men, and is less aggressively treated in women than in men. Perhaps most troubling is how little women understand about cardiac risk, their ability to control it, and consequently to improve their lifestyle and reduce heart disease. Education and behavior modification are solutions to improving mortality and morbidity from heart disease in the USA. As we move into the next century it will be key to teach women about their risks for the number one killer.
Menstrual Disorders (Amenorrhea) Among the health concerns of women that specifically belong to gynecology are menstrual disorders. Normally, the first menstrual period (menarche) occurs about age 12 or 13, or sometimes earlier or later. Periods are generally irregular for the first year or two, and then they tend to recur at intervals of 24 to 32 days. Each period begins about two weeks after ovulation, or the release of an egg cell (ovum) from the ovary—unless, of course, the ovum happens to be fertilized in the interval and pregnancy interrupts the whole process.
The menstrual flow, which lasts from three to seven days, is composed mainly of serum, mucus, and dead cells shed from the lining (endometrium) of the uterus. The loss of blood is minimal, usually from two to four ounces. The volume of flow, as well as the time schedule, tends to be fairly regular for most women. When one’s menstrual pattern varies noticeably from the expected pattern, and in the absence of pregnancy, it may be assign of a physical or emotional disorder.
Arteries of the Body Function and Pictures Arteries facts
Arteries are vessels that conduct blood away from the heart
Arteries transport oxygenated blood under pressure to the cells of the
body. (The pulmonary artery is an exception; it transports deoxygenated blood
to the lungs)
The arterial wall consists of three primary layers:
The innermost layer consists of simple squamous epithelium (the endothelium)
surrounded by a connective tissue basement membrane with elastic fibers.The
middle layer consists mainly of smooth muscle and is usually the thickest layer.
It not only provide support for the vessel but also changes vessel
diameter to regulate blood flow and blood pressure.The outermost layer,
which attaches the vessel to the surrounding tissue, consists of connective
tissue with varying amounts of elastic and collagen fibers.
Managing Stress Behaviors Stress is not something that you can run from or wish into nonexistence. To control stress, you must meet it head on and use as many resources as you can to insure that your coping skills are fine-tuned and ready to help you. In planning your personal strategy for stress success, you should consider the following :
Nasopharyngeal cancer symptoms and prognosis Are you looking for Nasopharyngeal cancer symptoms and prognosis? Nasopharyngeal cancer develops in the nasopharynx, an area in the back of the nose toward the base of skull. To understand nasopharyngeal cancer, it helps to know about the structure and function of the nasopharynx.
Menopause Definition, Age and Treatment Guidelines Elizabeth K. Stanford, MD
We all know what happens at a certain age to women. It is genetically determined that they stop making estrogen in their ovaries. That’s why fat people are overweight. Ladies are less likely to get hot flushes and less likely to get hip fractures, and more likely to get endometrial cancer. The follicles stop developing in the gonad at a certain age that is genetically predetermined. And actually before that phase happens, to end ovulation and menstrual cycle regularity and sometimes some psychologic symptoms. Of course the hot flush which occurs in about ¾ of women and it occurs without an aura. It just happens and frequently wakens them from sleep and is very disturbing. So these are the early symptoms of estrogen deficiency. A few years later the target tissues start to atrophy; the vagina and the urethra and the bladder, which are urologically grafted to the urogenital sinus. And since estrogen stimulates collagen synthesis, there is atrophy in the dermis of the skin. You’ve all noticed those vertical lines in the upper lip of women. That’s a sign of not making enough collagen or dermis.
When estrogen deficiency begins, there is an increased rate of bone resorption, which in about half of white women leads to osteoporosis and if they live long enough then they may develop fractures from this. These fractures start appearing about age 60. There is also an acceleration of cardiovascular disease in women not taking estrogen, and estrogen will retard the acceleration of atherosclerosis. Of course these are the serious problems that are asymptomatic. The osteoporosis and the atherosclerosis. So we don’t mention them until the event occurs. You all measure blood pressure and treat hypertension and you make a cholesterol to treat cardiovascular disease, and now there is a move afoot to measure bone mineral density in all white women and Asian women. And now found that even about 30% of blacks have osteoporosis, so this is being reimbursed by Medicare and this is something that you will be doing in the next few years.
Best Eye Surgery Hospitals Are you looking for best eye surgery hospitals?
Eye surgery, also known as orogolomistician surgery or ocular surgery, is surgery performed on the eye or its adnexa, typically by an ophthalmologist.
Heat Stroke Treatment and Medication at Home Heat stroke may also be referred to as: heat contractions, sunstroke, heat exhaustion and heat fatigue. This health state is often life-threatening. This situation occurs when people exert or play in scorching, sticky places and their body liquids are lost during sweating, causing dehydration the body to swelter. Heat sickness may be observed as an array of illness involving the body’s failure to deal with heat. Here is some stuff about Heat Stroke Treatment at Home
Thyroid Cancer Symptoms and Treatment hyroid carcinoma is common in all age groups, and it is especially in patients who have received any radiation therapy to the face, neck, or upper chest. It is rarely associated with functional abnormalities. Papillary carcinoma is the most common and least aggressive thyroid malignancy. Pure papillary or mixed papillary-follicular carcinoma represents about 70% of all thyroid cancers. Follicular carcinoma represents about 15% of thyroid malignancies but is more likely to have distant metastases. Papillary and follicular thyroid carcinomas are classified as differentiated thyroid carcinoma. Medullary thyroid carcinoma represents less than 5% of thyroid cancers and tends to metastasize locally. Of all cases of medullary thyroid cancer, about one-third are sporadic, one-third are familial occurrences, and another third are associated with multiple endocrine neoplasia type II. Anaplastic thyroid carcinoma represents only about 1% of thyroid malignancies. Other malignancies involving the thyroid include lymphomas and metastases (especially melanoma, breast, renal, and bronchogenic carcinomas).
Recognizing Warning Signs of Stroke Stroke is a general term for a wide variety of crises (sometimes called cerebrovascular accidents [CVAs] or brain attacks) the result from blood vessel damage in the brain. African Americans have a much greater risk of stroke than white American do, probably because African Americans have greater likelihood of having hypertension than white Americans. Data for 1998 indicate that 158,448 deaths and half a million new cases of stroke occurred. Just as the heart muscle needs adequate blood supply, so does the brain. Any disturbance in the proper supply of oxygen and nutrients to the brain can pose a threat.
Perhaps the most common form of stroke results from the blockage of a cerebral (brain) artery. Similar to coronary occlusions, cerebrovascular occlusions can be started by a clot that travels from another part of the body to the brain, called an embolus. The resultant accidents (cerebral thrombosis or cerebral embolism) cause between 80% and 90% of all strokes. The portion of the brain deprived of oxygen and nutrients can literally die.
What is Heat Stroke Are you looking for What is Heat Stroke? Here is some definition about What is Heat Stroke. Heat-related illnesses, such as heat exhaustion and heatstroke, occur when your body can't keep itself cool. As the air temperature rises, your body stays cool when your sweat evaporates. On hot, humid days, the evaporation of sweat is slowed by the increased moisture in the air. When sweating isn't enough to cool your body, your body temperature rises, and you may become ill.