T cells develop from stem cells in the
A) bone marrow.
B) liver.
C) spleen.
D) thymus.
E) kidneys.
D
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This figure shows an intestinal villus. What is the structure indicated by the number 1?
A. Intestinal artery B. Lacteal C. Microvillus D. Intestinal vein E. Flagellum
Which of the following factors would decrease the GFR?
a. a fall in plasma protein concentration. b. an obstruction such as a kidney stone in the tubular system, which increases Bowman's capsule hydrostatic pressure. c. vasodilation of the afferent arterioles. d. two of these answers. e. all of these answers.
As spermatogenic cells mature, they migrate from the outer edge of the seminiferous tubule toward the lumen.
Answer the following statement true (T) or false (F)
Hyperglycemia is characterized by:
A) a gradual onset and warm, dry skin. B) shallow respirations and bradycardia. C) a rapid onset and cool, clammy skin. D) a blood glucose level above 110 mg/dL.