Which of the following statements about spermatogenesis is not true?
A) The spermatogonium forms the primary spermatocyte.
B) The primary spermatocyte forms two secondary spermatocytes.
C) The secondary spermatocytes each form two spermatids.
D) Each spermatid forms two sperm.
D) Each spermatid forms two sperm.
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The jugular foramen provides a route of passage through the cranium for which of the following cranial nerves?
A) accessory and hypoglossal B) facial and vestibulocochlear C) olfactory and optic D) glossopharyngeal, vagus and accessory
A muscle located on the anterior surface of the thigh will ________ the knee, whereas a muscle on the posterior surface will ________ the knee
A) flex, extend B) extend, flex C) adduct, abduct D) abduct, adduct
Explain how T cell activation, proliferation, and differentiation are affected if a co-stimulator is unavailable
What will be an ideal response?
Which of the following statements about blood clotting is FALSE?
A. It is a result of a cascade of enzyme activation. B. It requires the presence of erythrocytes. C. It is the formation of a thrombus. D. It occurs after formation of a platelet plug in a damaged vessel. E. It involves positive feedback by thrombin.