All red blood cells in an adult originate in the:
A) red bone marrow. B) spleen. C) liver. D) heart.
Answer: A
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The structure the sperm enters upon exiting the ductus deferens is the
A. seminal vesicles. B. ejaculatory duct. C. epididymis. D. rete testis.
Spherical bacteria are called ________________________________________
Fill in the blank(s) with correct word
Name the three branches of the internal carotid artery
A) anterior cerebral, middle cerebral, and posterior cerebral arteries B) ophthalmic, anterior cerebral, and middle cerebral arteries C) posterior cerebral, basilar, and vertebral arteries D) cerebral arterial circle, and basilar and vertebral arteries E) ophthalmic, petrosal, and sagittal arteries
What type of muscle tissue causes vasoconstriction?
A. skeletal muscle B. smooth muscle C. cardiac muscle