During the excitement phase of intercourse, what makes the human penis enlarge and become rigid?
A) blood
B) semen
C) bone
D) contracted muscles
Ans: A) blood
Anatomy & Physiology
You might also like to view...
The pancreas is located primarily on the ______ side of the body, and it produces an _______ juice that is rich in a variety of enzymes
A. left, acidic B. left, alkaline C. right, acidic D. right, alkaline
Anatomy & Physiology
Which plexus is formed from the ventral rami of nerves L4 to S4?
A. Brachial B. Cervical C. Pelvic D. Sacral E. Lumbar
Anatomy & Physiology
What is the last branch off the aortic arch?
A. The brachiocephalic artery B. The coronary artery C. The left common carotid artery D. The left subclavian artery E. The right common carotid artery
Anatomy & Physiology
AIDS-related research received considerable attention during the:
A. 1950s. B. 1960s. C. 1970s. D. 1980s
Anatomy & Physiology