The structure of a testis is composed of
A) semen in various stages of development held in seminiferous tubules.
B) a single very long seminiferous tubule that winds through the structure.
C) 1 to 4 lobules, each of which contains about 250 seminiferous tubules.
D) about 250 lobules, each of which contains 1 to 4 seminiferous tubules.
D
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What is the total number of phalanges in a normal human body?
A. 42 B. 14 C. 50 D. 56 E. 28
A double covalent bond involves
?A. the sharing of one pair of electrons.? B. the sharing of two pairs of electrons.? C. the donation of one pair of electrons.? D. the donation of two pairs of electrons.
In most non-crocodilian reptiles, the ventricle is divided into three chambers. Which of the following is NOT one of the chambers?
A) Cavum venosum B) Cavum pulmonale C) Cavum cardiacum D) Cavum arteriosum
Pain from the kidneys is usually referred by way of the:
A. autonomic pathways to the inferior pelvic organs. B. sympathetic pathways to the T10-T12 dermatomes. C. somatic pathways to the left shoulder. D. parasympathetic pathways to the T1-T2 region.