Circulation - heart

Question 1

describe the structure of the human heart

Answer 1

4 chambered pump providing dual circulation
pulmonery (lungs)
systemic (rest of the body)

Question 2

what does the right atrium do

Answer 2

receives deoxygenated blood from the body and delivers it to the right ventricle which pumps blood to the lungs

Question 3

what does the left atrium do

Answer 3

receives oxygenated blood from lungs and delivers blood to the left ventricle which pumps blood to the rest of the body

Question 4

what are arteries

Answer 4

large
elastic
muscular

Question 5

what are veins

Answer 5

thinner than arteries
skeletal muscles assist blood flow
valves ensure they flow in one direction

Question 6

what are capillaries

Answer 6

slow exchange of materials

Question 7

what is it called when the heart contracts and relaxes in a rhythmic cycle

Answer 7

cardiac cycle

Question 8

what is it called when the contraction, or pumping, phase

Answer 8

systole

Question 9

what is it called with the relaxation, or filling, phase

Answer 9

diastole

Question 10

how does blood pressure differ in the body

Answer 10

there are areas of high and low blood pressure
in all different directions

Question 11

describe the control of heart movement

Answer 11

contraction of the heart muscle is stimulated by an electrical impulse which is sent by the pace maker