Which portion of the sperm cell is most involved with penetration of the oocyte?
A. Tail
B. Acrosome
C. Centriole
D. Midpiece
E. Nucleus
Answer: B
Anatomy & Physiology
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The choroid plexus originates in the
A. dura mater. B. arachnoid. C. pia mater. D. None of the above
Anatomy & Physiology
Interferons are one of the classes of
A. interleukins. B. cytokines. C. colony-stimulating factors. D. tumor necrosis factors.
Anatomy & Physiology
Hypertension may be caused by all of the following except
a. renal disease b. hardening of the arteries c. overactive baroreceptors d. salt imbalances e. adrenal medullary tumors
Anatomy & Physiology
Shannon signs a contract with Tevin, an unlicensed contractor, to build a deck and gazebo at the rear of her house. This contract is enforceable by
a. Shannon. b. any third party who is not aware that Tevin is not licensed. c. Tevin. d. no one.
Anatomy & Physiology