heart

Question 1

what is the circulatory system also named?

Answer 1

cardiovascular system

Question 2

what is this system made up of?

Answer 2

blood
blood vessels
heart

Question 3

what is the function of this system?

Answer 3

it is the bodys main internal transport system
- delivers nutrients, oxygen, H2o, white blood cells, hormones to every cell in the body
- takes wastes away e.g. CO2 ( and absorbs O2 )
- blood is the transport link between cells of all systems, important to maintain internal environment e.g. body temp, h2o, Ph and ions conc in body
- protection against disease e.g. blood clotting

Question 4

how does this system carry out its function?

Answer 4

blood- carries nutrients and wastes
vessels- carry blood to all parts of body
heart- pumps blood through the body and lungs to receive 02

Question 5

what does the aorta do in the heart? what is it?

Answer 5

• main artery ( carry blood away from heart)
• takes oxygenated blood to all parts of the body( except lungs)

Question 6

what does the pulmonary vein do?

Answer 6

• vein ( carries blood towards heart)
• brings oxygenated blood to heart from lungs

Question 7

what does the left atrium do?

Answer 7

• receiving chamber for blood from lungs
• pushes blood into left ventricle

Question 8

what does the atrioventricular vales do?
what are they called?

Answer 8

left= bicuspid valve
right = tricuspid valve
prevent back flow from the ventricles to atria

Question 9

what does the left ventricle do?

Answer 9

• pumps blood to body
• has a thick muscular wall for pumping blood into aorta and out of body.

Question 10

what is the septum?

Answer 10

• heart muscles that divided the left and right side of the heart

Question 11

what does the right ventricle do?

Answer 11

pumps blood into the pulmonary artery and to the lungs

Question 12

what do the semilunar valves do?
what are they called?

Answer 12

pulmonary valve- between right ventricle and the pulmonary artery
aortic valve- between left ventricle and aorta-
- stop blood flowing back into ventricles

Question 13

what are the veins in the heart?

Answer 13

inferior vena cava-
superior vena cava-
pulmonary vein-

Question 14

what does the inferior vena cava do in heart?

Answer 14

vein
brings blood from body to right atrium from below heart

Question 15

what does the superior vena cava do in the heart?

Answer 15

vein
- brings blood from body to right atrium from above the heart

Question 16

what does the pulmonary artery do in the heart?

Answer 16

carries deoxygenated blood from heart to each lung.