The shoulder joint is a ball-and-socket joint where the humeral head articulates with the:
A. acromion process.
B. glenoid fossa.
C. acetabulum.
D. popliteal fossa.
Ans: B. glenoid fossa.
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The countercurrent mechanism functions primarily in the
A. distal convoluted tubule B. proximal convoluted tubule. C. renal corpuscle. D. nephron loop.
Changes in blood osmotic pressure would most affect the secretion of
A) ACTH. B) ADH. C) oxytocin. D) TSH. E) LH.
Describe the process of carrier-mediated transport
A) In carrier-mediated transport, vesicles form by pinching the plasma membrane to transport material out of the cell. B) In carrier-mediated transport, receptor proteins bind to a ligand that causes the internalization of the ligand-receptor complex into the cell. C) In carrier-mediated transport, integral membrane proteins bind ions or molecules and transport them across the membrane. D) In carrier-mediated transport, peripheral membrane proteins bind ions or molecules and pass them along the surface of the plasma membrane. E) In carrier-mediated transport, channel proteins open allowing water-soluble ions and molecules to pass into and out of the cell.
The larynx is supported by nine pieces of cartilage. Which cartilages occur in pairs?
A. Corniculate and cricoid B. Cricoid, corniculate, and arytenoid C. Corniculate, cuneiform, and arytenoid D. Thyroid and corniculate E. Arytenoid and epiglottis