Which of the following is NOT true of a steroid hormone?
A. The hormone-receptor complex binds to DNA.
B. It activates a second messenger to cause cellular changes.
C. It diffuses into the cell and binds to its receptor protein.
D. Intracellular enzymes, made from the DNA, direct cellular changes.
Answer: B
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Which of the choices below does not explain why low capillary pressures are desirable?
A) Low blood pressure is associated with longer life span than high blood pressure. B) Low capillary pressure reduces the load of drainage the lymphatic drainage must handle. C) Capillaries are fragile and high pressures would rupture them. D) Most capillaries are extremely permeable and thus even low pressures force solute-containing fluid out of the bloodstream.
______ are masses of partially encapsulated lymphatic nodules in the pharynx
Fill in the blank(s) with correct word
What do you call the outermost connective tissue wrapping that surrounds the kidney?
A) Nephron B) Renal cortex C) Renal medulla D) Renal capsule
Which coat of an artery contains endothelium?
A. tunica intima B. tunica media C. tunica adventitia D. tunica elastica E. tunica intermedia