The path that fluid takes as it enters a lymphatic capillary is through
A. pores (fenestrations) in the cells of the capillary wall.
B. cell membrane leakage channels that allow diffusion.
C. vesicles that move the fluid across the cell (transcytosis).
D. spaces between capillary endothelial cells that are arranged as one-way flaps.
D
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How long is the average trachea?
A. 12-14 inches B. 12-14 cm C. 12-14 mm
Z lines
a. are formed by the T tubules. b. extend down the middle of the I band. c. are formed by the cross bridges. d. are the thin filaments. e. extend down the middle of the sarcomere.
Jasmine's doctor has ordered measurement of her androgen levels. Which of the following statements is most accurate about this test?
A. It depends on her muscle mass; androgens are anabolic steroids and cause muscle growth, so more muscle means more androgens. B. It should come back negative, because women do not produce any androgens. C. It depends on the phase of her cycle; androgens are only synthesized during the luteal phase of the ovarian cycle. D. Levels should be low but not absent, because the ovaries produce androgens but convert most of them into estrogens.
The term "primary lymphatic structure" applies
A. only to red bone marrow. B. only to lymph nodes. C. to lymph nodes and MALT. D. to the red bone marrow and thymus. E. to the spleen and lymph nodes.