Sperm production occurs in the
A) ductus deferens.
B) seminiferous tubules.
C) epididymis.
D) seminal glands (seminal vesicles).
E) rete testis.
B
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Definite changes in the __________ of the cell membrane can be seen in a cell that is becoming cancerous.
A)lipid rafts B)Cholesterol C)Glycocalyx D)Phospholipids
The extraembryonic membrane that contains fluid that surrounds and cushions the developing embryo and fetus is known as the
A) yolk sac. B) amnion. C) allantois. D) chorion. E) uterus.
______________ are joined to each other by structures called intercalated disks.
A) Skeletal muscle cells B) Cardiac muscle cells C) Smooth muscle cells D) Both skeletal and cardiac muscle cells E) Both cardiac and smooth muscle cells
The ________ extends between the soft palate and the base of the tongue at the level of the hyoid bone
A) pharynx B) laryngopharynx C) trachea D) epiglottis E) oropharynx