102N.7 The Circulatory System

Question 1

Cardiovascular system

Answer 1

Responsible for the circulation of blood; includes heart, arteries, veins, and capillaries

Question 2

Heart

Answer 2

Contracts and relaxes to force blood to move through the circulatory system; located in chest cavity

Question 3

Pericardium

Answer 3

Membrane that encases the heart

Question 4

Blood

Answer 4

Fluid that circulates through body, bringing nourishment and oxygen to all body parts; carries toxins and waste products to the liver and kidneys to be elimimated

Question 5

Arteries

Answer 5

Tubular, elastic, thick-walled branching vessels; carry oxygenated blood from heart to all tissues of body; are positioned deeply in body; branch into arterioles

Question 6

Veins

Answer 6

Tubular, elastic, thin-walled branching vessels; carry blood containing carbon dioxide from capillaries back to heart and lungs; thinner and less elastic than arteries, and places closer to surface of skin; receive blood back through venules

Question 7

Capillaries

Answer 7

Tiny, thin-walled vessels; take nutrients and oxygen from arteries to cells; take waste products from cells to the veins

Question 8

Varicose veins

Answer 8

Permanently dilated veins

Question 9

Lymph-vascular system

Answer 9

Second subsystem of circulatory system; responsible for circulation of lymph; includes lymph, lymph nodes, spleen, and lymphatic vessels