Contraction of the cremaster muscle:
A) moves sperm through the ductus deferens. B) propels sperm through the urethra.
C) wrinkles the scrotal skin. D) pulls the testes closer to the body.
Answer: D
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When the superior most points of the iliac crests are palpated, drawing a horizontal line through them bisects the spinous process of the ________ vertebra.
A. L3 B. T12 C. L1 D. L5 E. L4
When chemical signals are sent between two animals, __________ communication is being used
A) Neural B) Endocrine C) Autocrine D) Exocrine Fill in the blank with the correct word.
Place these structures in the correct order as impulses would travel through them after leaving the eye. Start at the top.
A. optic nerve B. optic chiasma C. optic tracts D. optic cortex E. all of the above
What is the innermost lining of the heart wall referred to as?
A. Visceral layer of the serous pericardium B. Epicardium C. Parietal layer of the serous pericardium D. Myocardium E. Endocardium