westcott courses final anatomy mid term

Which process occurs throughout most of the alimentary canal?

propulsion

Which structure is most associated with lacteals?

villi

The renal pyramids are separated from each other by extensions of the renal cortex called?

renal columns

What signal causes the heart to secrete atrial natriuretic hormone?

increased blood pressure

What are the female gonads called?

ovaries

Why do estrogen levels fall after menopause?

There are no follicles left to produce estrogen.

Which hypothalamic hormone contributes to the regulation of the male reproductive system?

gonadotropin-releasing hormone

Cleavage produces daughter cells called?

blastomeres

The placenta is formed from?

the mother’s endometrium and the embryo’s chorionic membrane

How does the decrease in progesterone at the last weeks of pregnancy help to bring on labor?

decreasing the inhibition of uterine contractility

Sex cells are also known as gametes?

True

Most blood enters the ventricle during?

atrial diastole

The first heart sound represents which portion of the cardiac cycle?

closing of the atrioventricular valves

The two tubes that eventually fuse to form the heart are referred to as the?

endocardial tubes