Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «I»:
Injury, hangman (Hangman's fracture)
Hangman's fracture: A broken neck involving a fracture of an upper cervical vertebra similar to the injury suffered in death by hanging. The fracture always affects the vertebra called the axis -- the second cervical vertebra (C2) -- with or without subluxation (slippage) of C2 on C3. A hangman's fr...
Injury, knee meniscus
Injury, knee meniscus: Injury to one of the two crescent-shaped cartilage pads between the two joints formed by the femur (the thigh bone) and the tibia (the shin bone). Each meniscus acts as a smooth surface for the joint to move on.
The two menisci are easily injured by the force of rotating the...
Injury, mental child
Injury, mental child: Also known as emotional child abuse, this is the third most frequently reported form of child abuse (after child neglect and physical child abuse), accounting 17% of all cases of child abuse.
It is likely that emotional child abuse is greatly underreported, since it can be dif...
Injury, mower: See: Mower injury....
Injury, needlestick: See: Needlestick injury....
Injury, scooter: See: Scooter injury....
Inkblot test: A test used in clinical psychology and psychiatry involving inkblots. The inkblots are used to determine what a person perceives (reads into) in the enigmatic and highly ambiguous shapes. Ten standardized blots are shown one at a time to a subject and their responses are recorded. The ...
Innate immunity: Immunity that is naturally present and is not due to prior sensitization to an antigen from, for example, an infection or vaccination. Since it is not stimulated by specific antigens, innate immunity is generally nonspecific. It is in contrast to acquired immunity. Also called natur...
Inner ear: There are three sections of the ear.
They are the external ear,
the middle ear, and the inner ear. The inner ear is far and
away the most
highly complex. The essential component of the inner ear
for hearing is the
membranous labyrinth where the fibers of the auditory nerve
Innervate: To supply with nerves. It is a little known fact that the cornea is the most densely innervated tissue in the body....
Innervation: The nerve supply, usually to a specific part of the body. The innervation of the cornea is dense....
Inotropic: Affecting the force of muscle contraction. An inotropic heart drug is one that affects the force with which the heart muscle contracts....
Inpatient: A patient whose care requires a stay in a hospital. As opposed to an outpatient. The term inpatient dates back to at least 1760. The case of an inpatient was referred to an incase....
INR: International normalized ratio, a system established by the World Health Organization (WHO) and the International Committee on Thrombosis and Hemostasis for reporting the results of blood coagulation (clotting) tests. All results are standardized using the international sensitivity index for th...
Insect sting: Stings from large stinging insects
as bees, hornets, yellow jackets and wasps can trigger allergic
reactions varying greatly
in severity. Avoidance and prompt treatment are essential. In
selected cases, allergy
injection therapy is highly effective. ...