Heart rate is controlled by neurons of the cardiovascular center located in the
A) pons.
B) thalamus.
C) medulla oblongata.
D) hypothalamus.
E) higher centers.
Question 2
A typical ejaculation releases approximately ________ sperm.
A) 1 million
B) 250 million
C) 100,000
D) 20 million
E) 800 million