Acetylcholine is released by all somatic motor neurons, all preganglionic neurons of the ANS and by the postganglionic parasympathetic nerve fibers
Indicate whether the statement is true or false
TRUE
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The mucous membrane or mucosa of the respiratory system
A) is present as the lining of the alveoli. B) consists of respiratory epithelial cells overlying a layer of loose connective tissue, the lamina propria. C) contains an epithelium that differs from that of the larynx. D) surrounds a thick layer of connective tissue, the submucosa. E) None of the answers are correct.
What must a body control system do to maintain homeostasis?
What will be an ideal response?
Each of the following statements concerning hair is true except
A) the medulla is the soft core of the hair. B) the cortex of the hair is composed of hard keratin. C) terminal hairs are heavy and more darkly pigmented than other types of hair. D) club hair is hair that has ceased growing. E) scalp hairs grow constantly throughout life.
The amount of filtrate produced per minute is called the
A. renal fraction. B. filtration fraction. C. glomerular filtration rate. D. clearance fraction. E. renal rate.