the heart

Question 1

aorta

Answer 1

the artery that takes blood away from the heart and towards the body, blood is pumped in by the contraction of the left ventricle

Question 2

vena cava

Answer 2

the vein that returns deoxygenated blood to the right hand side of the heart, pumps blood into right atrium

Question 3

pulmonary artery

Answer 3

takes deoxygenated blood to the lungs, blood is pumped in by contraction of the right ventricle

Question 4

right coronary artery

Answer 4

supplies blood to the right atrium and a portion of both ventricles, supplies the cells of atrioventricular and sinoatrial nodes

Question 5

left coronary artery

Answer 5

supplies oxygenated blood to the anterior portion of the septum, anterior walls of the left atrium and both ventricles

Question 6

pulmonary vein

Answer 6

takes oxygenated blood from the lungs back to the heart, into the right ventricle

Question 7

artery

Answer 7

• type of blood vessel that carries blood away from the heart to the tissues
• carries under high pressure
• walls are comprised of arteries contain collagen, smooth muscle and elastic fibers

Question 8

arterioles

Answer 8

• type of blood vessel that connects arteries to the capillaries
• walls are comprised of collagen smooth muscle and elastic fibers

Question 9

capillaries

Answer 9

• microscopic blood vessels that form a large network through the tissue of the body
• connect the arterioles to the venules
• site of exchange of substances between the blood and the tissue

Question 10

vein

Answer 10

• a type of blood vessel that carries blood towards the heart under low pressure
• wide lumen, smooth inner lining and valves
• the walls of the veins contain large amounts of collagen, smooth muscle, and little elastic fibers

Question 11

venule

Answer 11

• a type of blood vessel that connects capillaries and veins
• the walls of the venules contain small amounts of smooth muscle and collagen

Question 12

septum

Answer 12

the wall of muscle which separates the left hand side of the heart and the right hand side of the heart, preventing deoxygenated and oxygenated blood from mixing

Question 13

single circulatory system

Answer 13

where the blood follows one circuit. blood is pumped by the heart around the body and then returns to the heart, found in fish

Question 14

cardiac cycle

Answer 14

describes the sequence of events resulting in one complete contraction and relaxation of the heart

Question 15

cardiac output

Answer 15

the volume of blood pumped around the circulatory system in one minute

Question 16

atriums