During fertilization, sperm bind to specific receptor sites on the surface of the
a. zona pellucida
b. corona radiata
c. plasma membrane of the ovum
d. polar body
e. oviduct
A
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Phagocytic cells are attracted to __________, chemical mediators released at the site of damage
Fill in the blank(s) with correct word
Parathyroid hormone affects the ________.
A. stomach, pancreas, and bone B. intestine, kidneys, and bone C. bones, heart, and blood D. kidney, liver, and spleen E. liver, stomach, and small intestine
The effect of acetylcholine can be stimulating or inhibiting. Which of the following gives the best explanation for why this is so?
A) Acetylcholine has many different forms. B) Acetylcholine has a "dose effect". Larger doses are stimulating while small doses inhibit. C) Postsynaptic cells have a dynamic and changing metabolism and respond differently at different times. D) Different post synaptic cells will have different receptors.
Which of the following cells can be found in connective tissue?
A) fibroblasts B) adipocytes C) mast cells D) macrophages E) All of the answers are correct.