47-1

Question 1

atrium and ventricle

Answer 1

atrium is the upper chambers of the heart
ventricle is the lower chambers

Question 2

which side of the heart is oxygenated and which side is deoxygenated?

Answer 2

the right side of the heart(blue) is deoxygenated and pumps blood to the lungs.

the left side of the heart (red) is oxygenated.

Question 3

describe the path blood takes in the heart and body

Question 4

describe the functions of the lymphatic system

Answer 4

It keeps body fluid levels in balance and defends the body against infections.

Question 5

what does the pericardium do?

Answer 5

surrounds the heart and secretes a fluid that reduces friction when the heart beats.

Question 6

describe the septum
where it is
what it does

Answer 6

a septum divides the heart into two sides. also prevents oxygenated and deoxygenated blood to mix.

Question 7

describe a one-way valve
(AV) valves

Answer 7

a one-way valve separates each atrium from the ventricle beneath it.

they consist of flaps of tissue that open in only one direction.

the (AV) valve on the bottom right side is called the tricuspid valve.

and the (AV) valve on the left side is called mitral valve.

as the ventricles pump, blood pressure closes the AV valves, preventing blood from flowing backward from the ventricles to the atrium.

Question 8

What do nodes do?

Answer 8

control the heartbeat
regulates the beat

Question 9

where is SA nodes located

Answer 9

right atrium

Question 10

where is the AV node located?

Answer 10

in the septum, between the atria

Question 11

average adult rest heart beats….each minute

Answer 11

70 times each minute

Question 12

phase one of the heartbeat is called?

Answer 12

systole

Question 13

when does phase one of the heartbeat happen?

Answer 13

when the ventricles contact, closing the AV valves and opening the SL valves to pump blood into the two major vessels that exit the heart.

Question 14

phase two of the heartbeat

Answer 14

phase two, called diastole, occurs when the ventricles relax, allowing the back pressure of the blood to close the SL

Question 15

muscular vessels that carry blood away from the heart

Answer 15

arteries
an inner layer of endothelia, middle layer of smooth muscle, outer layer of connective tissue.

Question 16

pulmonary circulation

Answer 16

involves blood moving between the heart and lungs.

Question 17

lymphatic system key components

Answer 17

lymph (fluid), lymph nodes, lymph vessels,

Question 18

what do arteries do?

Answer 18

carry blood away from the heart

Question 19

structure of arteries

Answer 19

inner layer endothelial tissue
the middle layer of smooth muscle tissue
outer layer connective tissue

Question 20

systemic circulation

Answer 20

movement of blood between the heart and all parts of the body except the lungs.

Question 21

what does the pulmonary circulation system mean

Answer 21

blood moving between the heart and lungs

Question 22

systemic circulation

Answer 22

involves the movement of blood between the heart and all parts of the body except the lungs.

Question 23

what do arteries do?

Answer 23

arteries pump blood away from the heart

Question 24

what do veins do?

Answer 24

veins pump blood to the heart

Question 25

compare the lymphatic system with the cardiovascular system

Answer 25

smaller lymph vessels are similar to capillaries

larger lymph vessels are similar in structure to veins.

Question 26

key components of the lymphatic system

Answer 26

lymph (fluid), lymph nodes, lymph vessels.

Question 27

how does lymph move through the vessels?

Answer 27

squeezing skeletal muscles.

Question 28

the key function of the lymphatic system

Answer 28

-returns fluid that has collected in the tissues back to the bloodstream

-nodes may become swollen and tender when a person is sick, white blood cells fight disease, increased number of lymphocytes.