The physical maturation of sperm is called
A) meiosis I.
B) oogenesis.
C) spermatogonia mitosis.
D) spermiogenesis.
E) tetrad formation.
D) spermiogenesis.
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Which of the following is not a white blood cell?
a. Thrombocyte b. Neutrophil c. Lymphocyte d. Monocyte e. All of the above are white blood cells.
The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?
A) 2 B) 2, 8 C) 2, 8, 1 D) 2, 8, 8
Incoming visual information is relayed to the appropriate cortical tissue by
a. the ganglion cells b. the lateral geniculate nuclei c. thalamus d. both a and b e. both b and c
The most important factor regulating the mammalian ECF volume and blood pressure is
a. vasopressin. b. thirst. c. increase of Na+ ions in ECF. d. renin-angiotensin-aldosterone system. e. decrease of K+ ions in ECF.