Range of motion
The full movement potential of a joint, usually its range of flexion and extension. For example, a knee might lack 10 degrees of full extension due to an injury.
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- Range, normal
Characteristic of 95 percent of values from a normal population. The remaining normal results fall outside the normal range, as do any truly abnormal results. The normal range for a particular test result, condition, symptom, or behavior may differ, based on the patient’s age, size, sex, ethnicity, or culture.
- RANTES
A cytokine that is a member of the interleukin-8 superfamily of cytokines. RANTES is a protein. It is a selective attractant for memory T lymphocytes and monocytes. It binds to CCR5, a coreceptor of HIV. RANTES is an acronym for Regulated on Activation, Normal T Expressed and Secreted. It is also known as CCL5.
- Rape
Forced sexual intercourse; sexual assault; sexual intercourse between an adult and a minor. Rape may be heterosexual (involving members of opposite sexes) or homosexual (involving members of the same sex). Rape involves insertion of an erect penis or an inanimate object into the female vagina or the male anus. Legal definitions of rape may also […]
- Rape, date
Rape of a woman by a man with whom she is acquainted. The rapist is usually the woman’s “date” (escort). Although there are many possible date rape scenarios, in a common one, the man tries to weaken the resistance of the female by exerting undue psychological pressure upon her or by plying her with alcohol […]
- Rapid eye movement sleep
Rapid eye movement sleep (REM) sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during REM sleep. We typically have 3 to 5 periods of REM sleep per night. They occur at intervals of 1-2 hours and are quite variable in length. An episode of REM sleep may last […]