The process whereby spermatids go through morphological changes and become spermatozoa is called
A) spermatogenesis.
B) mitosis.
C) diploid division.
D) spermiogenesis.
E) None of the answers are correct.
D) spermiogenesis.
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Cerebrospinal fluid is formed by tissue in the walls and roofs of the
A. subarachnoid space. B. dural sinuses. C. fissure of Sylvius. D. ventricles of the brain. E. subdural space.
Which of the following structures are found in veins but NOT in arteries?
a) tunica externa b) tunica media c) tunica interna d) valve e) lumen
The long tail-like structure that propels sperm cells is the:
a. endoplasmic reticulum b. cilia c. Golgi apparatus d. flagella
The cervical plexus
A) gives rise to the phrenic nerve, which provides the sole motor supply to the diaphragm. B) consists of the ventral rami of spinal nerves C1—C4, and some fibers from C5. C) gives rise to motor branches that innervate the muscles of the neck. D) gives rise to branches that supply the skin of the neck, shoulder, and upper chest region. E) All of the answers are correct.