Which of the following is true about hormones?
a. are released from exocrine glands.
b. interact with receptors at target-cell sites.
c. are synthesized in the lymph nodes.
d. interact with receptors in the blood.
e. are all similar chemically.
B
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A drug called __________, taken during pregnancy, may result in infants being born with unformed arms and legs.
Fill in the blank(s) with the appropriate word(s).
Why are cells in body organs generally within 100 ?m of a blood capillary?
A. To increase mean diffusion time B. A larger distance maximizes entropy C. To decrease mean diffusion time D. So that larger particles can diffuse more easily
What process is indicated by C?
A)digestion of food particles B)exocytosis of RNA from the cell C)exocytosis of ribosomes from the cell D)exocytosis of secretory proteins
The autonomic division is involved in controlling ________.
A. skeletal muscle, cardiac muscle, and smooth muscle B. cardiac muscle, glands, and adipose tissue C. skeletal muscle only D. skeletal muscle, skin, joints, and bones