Lipophilic (hydrophobic) hormones circulate in the blood largely bound to plasma proteins
Indicate whether the statement is true or false
T
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Merocrine glands produce their secretions by accumulating their secretions internally until the cell ruptures
Indicate whether the statement is true or false
Which structures in capillary beds open to allow the capillaries to perfuse with blood?
A. Metarterioles B. Thoroughfare channels C. Fenestrations D. Precapillary sphincters E. Postcapillary sphincters
The vermiform appendix:
a. produces enzymes that assist in fat digestion b. gets its name because it looks like a worm c. is important in the reabsorption of bile d. none of the above
Which is characteristic of cardiac muscle tissue?
a. well developed sarcoplasmic reticulum. b. fast myosin ATPase activity. c. contraction is initiated neurogenically. d. presence of gap junctions. e. calcium supplied by sarcoplasmic reticulum exclusively.