1.Capillaries do not have a tunica media layer. This implies which of the following about capillaries?

Capillaries cannot close their valves.

Capillaries cannot dilate or contract.

Capillaries do not have an outer layer of connective tissue.

Capillaries do not contain an inner layer of endothelial tissue.

2.The first heart sound is made by

blood moving to the atria

blood moving to the ventricles

opening of the valve between the atria and the ventricles

closing of the valve between the atria and the ventricles

3.A person's blood tests show that her blood is accumulating old and damaged red blood cells. Which organ could be damaged, based on the image above?

USE LINK FOR IMAGE —> https://lss.brainhoney.com/Resource/64964993,0/Assets/78905_5485ffd5/0608_g33_q02.jpg

4.How does acetylcholine influence chemical and physical digestion?

Chemical-triggers release of pancreatic enzyme; Physical-triggers stomach muscle contraction

Chemical-triggers release of bile; Physical-triggers tongue contraction

Chemical-triggers stomach muscle contraction; Physical-triggers release of pancreatic enzyme

Chemical-triggers tongue contraction; Physical-triggers release of bile

5.Which of the following groups of organs provide secretions that nourish and protect sperm cells?

Vas deferens; epididymis; Cowper's glands

Seminal vesicles; Cowper's glands; prostate gland

Seminal vesicles; seminiferous tubules; epididymis

Vas deferens; seminiferous tubules; prostate gland

6.What does an electrocardiogram measure?

Sound waves created by the closing of heart valves

The volume of blood moving through the heart chambers

The force of muscle contraction in the heart chambers

Action potentials moving through the heart muscle