The ruptured follicle that secretes estradiol and progesterone is known as the ________.
A) ovum
B) oocyte
C) corpus luteum
D) uterine tube
Question 2
The heart is a/an ________ organ that contracts at least once every second to pump blood through the body.
A) endocrine
B) lymphatic
C) muscular
D) pulmonary