Define sarcopenia, and list its side effects.
What will be an ideal response?
Sarcopenia is defined as an age-related loss of muscle mass, strength, and function. How much loss of muscle mass is related to the aging process itself or to actual physical inactivity and faulty nutrition is unknown. Sarcopenia leads to mobility disability and loss of independence. Muscle mass loss is also related to a lower metabolic rate, high prevalence of obesity, insulin resistance, type 2 diabetes, abnormal blood lipids, and high blood pressure. Estimates indicate that half of all adults aged 65 and older in the United States currently suffer from age-related muscle loss. Early muscle loss doesn't appear to bother them or hold them back. They think they are fine until they lose functional independence; at that point, they realize the serious mistake made and subsequent loss of quality of life.
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If a double-negative thymocyte has just completed a productive ?-chain gene rearrangement, which of the following describes the immediate next step in the development of this thymocyte?
a. A pre-T-cell receptor is assembled as a superdimer. b. Rearrangement of ?- and ?-chain genes commences. c. Expression levels of RAG-1 and RAG-2 are elevated. d. The linked ?-chain genes are eliminated. e. This cell will inevitably differentiate into a committed ?:? T cell.
A phlebotomist is a physician extender
Indicate whether the statement is true or false
An individual who has been a drinker for years will metabolize alcohol at a slower rate than an individual who drinks only rarely.
Answer the following statement true (T) or false (F)
Which idea to help address drinking on college campuses has been most hotly debated?
A. fines on bar owners who let underage students in B. caps on alcohol content in beer C. changes in drinking age D. bans on drinking games in bars