Which of the following events occurs on the postsynaptic membrane?
A. acetylcholine production
B. rapid degradation of acetylcholine
C. release of neurotransmitter
D. neurotransmitter combines with a receptor molecule
E. release of calcium ions
D
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________ is a condition resulting from an inflammation of a facial nerve
A) Cerebral palsy B) Bell's palsy C) Addison's disease D) Gout E) Tic douloureux
The solid ball of cells that has been likened to a mulberry is called a
A) chorion. B) blastula. C) gastrula. D) morula. E) blastocyst.
Which of the following occurs in the formation of mineralized bone matrix?
A. Blood calcium is elevated. B. Ca2+ is actively transported from bone matrix to the blood. C. Osteoblasts form collagen and proteoglycans. D. The protein components of bone matrix are digested. E. Hydrogen ions form an acid environment in bone matrix.
What effect do you think douching, or washing, has on the vagina?
A) Douching damages the ridge-like rugae inside the vagina. B) Douching removes mucus made by the stratified squamous epithelium of the vaginal walls. C) Douching washes away beneficial bacteria and alters the pH balance of the vagina. D) Douching washes away the cilia lining the mucous membrane of the vagina.