Circulatory and Respiratory Systems

_____________ are structures that allow for one-way blood flow through the heart.

• Atria

• Ventricles

• Valves

• Capillaries

Which statement explains blood pressure?

• Blood pressure is highest in the veins near the heart.

• Blood pressure is highest in the arteries near the heart.

• Blood pressure is highest in the veins farthest away from the heart.

• Blood pressure is highest in the arteries farthest away from the heart.

Ventricles pump blood out of the heart. Which types of vessels will be the first to contact the blood from the ventricles?

• arteries

• atria

• capillaries

• veins

Which vessels allow for oxygen movement into the tissues?

• arteries

• veins

• heart

• capillaries

Which statements describe the movement of blood through the heart? Select two options.

• Blood from the veins enters the ventricles.

• Atria and ventricles contract at the same time.

• Atria push blood into the ventricles.

• Valves allow for two-way blood flow.

• Ventricles push blood out of the heart.

The ________________ is the fluid component of blood.

• red blood cells

• white blood cells

• collagen

• plasma

Which gases are carried by red blood cells? Select two options.

• oxygen

• helium

• carbon dioxide

• nitrogen

• hydrogen

Gerald is lightheaded and tired from a lack of oxygen in his tissues. What is most likely the reason he feels this way?

• His plasma level is high.

• His white blood cell count is high.

• His platelet count is low.

• His red blood cell count is low.

Which structure is also called the windpipe?

• the pharynx

• the larynx

• the trachea

• the bronchus

Which is the next structure to contact air after it passes from the nose to the nasal cavity?

• the pharynx

• the larynx

• the bronchus

• the trachea