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AVN
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AVNAvascular necrosis.
RELATED TERMS--------------------------------------
Necrosis
Dead tissue that surrounds healthy tissue in the body.
SIMILAR TERMS--------------------------------------
PREVIOUS AND NEXT TERMS--------------------------------------
Avian flu
See: Avian influenza.
Avian influenza
Also called fowl plague, avian flu, and bird flu. A highly contagious viral disease with up to 100% mortality in domestic fowl. Caused by influenza A virus subtypes H5 and H7. All types of birds are susceptible to the virus but outbreaks occur most often in chickens and turkeys. The infection may be brought by migratory wild birds which can carry the virus but show no signs of disease. Humans are only rarely affected.
Avian tuberculosis
See: Tuberculosis, avian.
AVM
An AVM (arteriovenous malformation) is a congenital disorder (one present at birth) of blood vessels in the brain, brainstem, or spinal cord that is characterized by a complex, tangled web of abnormal arteries and veins connected by one or more fistulas (abnormal communications).The AVM has no capillary bed of its own and the fistulas in the AVM permit high-speed, high-flow shunting of blood from the arterial to the venous side of the circulation. This shunting causes low blood pressure (hypotension) in the arterial vessels feeding the AVM and neighboring areas of the brain that they normally supply with blood.AVMs typically cause problems before the age of 40. The most common symptoms of AVM include hemorrhaging (bleeding), seizures, headaches, and neurological problems such as paralysis or loss of speech, memory, or vision. The frequency of hemorrhage in various series ranges from 30-82%. AVM rupture accounts for 2% of all strokes.
AVM (arteriovenous malformation)
An arteriovenous malformation (AVM) is a congenital disorder (one present at birth) of blood vessels in the brain, brainstem, or spinal cord that is characterized by a complex, tangled web of abnormal arteries and veins connected by one or more fistulas (abnormal communications).
AVN
Avulse
To separate or tear away a body part, as from an accident or surgery. While playing football, he avulsed a spinous process.
Avulsion
Tearing away. A nerve can be avulsed by an injury, as can part of a bone.
Avuncular
1. Literally, relating to an uncle. 2. Figuratively, suggestive of an uncle, as in geniality. 3 In medical genetics, pertaining to an aunt or uncle. An avuncular relationship is the genetic relationship between aunts and uncles and their nieces and nephews. From the Latin avunculus, meaning maternal uncle. The feminine equivalent of avuncular is materteral (like an aunt).
Axelrod
See: Axelrod, Julius.
Axelrod, Julius
(1912- ) American pharmacologist and neuroscientist who shared the 1970 Nobel Prize in Physiology or Medicine for his discovery of the actions of neurotransmitters in regulating the metabolism of the nervous system.
RELATED TERMS--------------------------------------
Necrosis
Dead tissue that surrounds healthy tissue in the body.
SIMILAR TERMS--------------------------------------
PREVIOUS AND NEXT TERMS--------------------------------------
Avian flu
See: Avian influenza.
Avian influenza
Also called fowl plague, avian flu, and bird flu. A highly contagious viral disease with up to 100% mortality in domestic fowl. Caused by influenza A virus subtypes H5 and H7. All types of birds are susceptible to the virus but outbreaks occur most often in chickens and turkeys. The infection may be brought by migratory wild birds which can carry the virus but show no signs of disease. Humans are only rarely affected.
Avian tuberculosis
See: Tuberculosis, avian.
AVM
An AVM (arteriovenous malformation) is a congenital disorder (one present at birth) of blood vessels in the brain, brainstem, or spinal cord that is characterized by a complex, tangled web of abnormal arteries and veins connected by one or more fistulas (abnormal communications).The AVM has no capillary bed of its own and the fistulas in the AVM permit high-speed, high-flow shunting of blood from the arterial to the venous side of the circulation. This shunting causes low blood pressure (hypotension) in the arterial vessels feeding the AVM and neighboring areas of the brain that they normally supply with blood.AVMs typically cause problems before the age of 40. The most common symptoms of AVM include hemorrhaging (bleeding), seizures, headaches, and neurological problems such as paralysis or loss of speech, memory, or vision. The frequency of hemorrhage in various series ranges from 30-82%. AVM rupture accounts for 2% of all strokes.
AVM (arteriovenous malformation)
An arteriovenous malformation (AVM) is a congenital disorder (one present at birth) of blood vessels in the brain, brainstem, or spinal cord that is characterized by a complex, tangled web of abnormal arteries and veins connected by one or more fistulas (abnormal communications).
AVN
Avulse
To separate or tear away a body part, as from an accident or surgery. While playing football, he avulsed a spinous process.
Avulsion
Tearing away. A nerve can be avulsed by an injury, as can part of a bone.
Avuncular
1. Literally, relating to an uncle. 2. Figuratively, suggestive of an uncle, as in geniality. 3 In medical genetics, pertaining to an aunt or uncle. An avuncular relationship is the genetic relationship between aunts and uncles and their nieces and nephews. From the Latin avunculus, meaning maternal uncle. The feminine equivalent of avuncular is materteral (like an aunt).
Axelrod
See: Axelrod, Julius.
Axelrod, Julius
(1912- ) American pharmacologist and neuroscientist who shared the 1970 Nobel Prize in Physiology or Medicine for his discovery of the actions of neurotransmitters in regulating the metabolism of the nervous system.
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This dictionary contains 19186 terms.
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