Circulatory System

The circulatory system is responsible for

• delivering nutrients to, and removing wastes from, the cells of the body

• the breaking down of food into nutrients usable by the body

• the exchange of gases in the body

• producing hormones to regulate body functions

Which is NOT a component of blood?

• plasma

• white blood cells

• red blood cells

• villi

• platelets

Deoxygenated blood from the body enters the heart at

• structure 2, the right atrium

• structure 3, the right ventricle

• structure 8, the left atrium

• structure 9, the left ventricle

This structure is responsible for delivering blood to the lungs for oxygenation.

• Structure 10, the superior vena cava

• Structure 6, the pulmonary artery

• Structure 7, the pulmonary veins

• Structure 1, the aorta

Oxygenated blood would be found in which chambers of the heart?

• 2 and 3

• 2 and 8

• 8 and 9

• 3 and 9

Which body structures have walls one cell thick to facilitate the exchange of materials?

• veins and arteries

• trachea and bronchi

• capillaries and alveoli

• lymph vessels and villi

Veins carry blood ____________________ to heart while arteries carry blood _____________________________ the heart.

• toward, away from

• away from, toward

A blockage in vessel no. 1 might affect blood flow to the

• brain

• lungs

• heart

• none of the above

Tags

NGSS.MS-LS1-3

True or False: There are six valves in the heart.

• True

• False

_________________ are thinner-walled vessels containing valves, while ______________________ are thicker-walled vessels.

• Arteries, veins

• Veins, arteries

• Capillaries, veins

• Arteries, capillaries