Structures and Functions of the Circulatory system

Question 1

3 functions of circulatory system

Answer 1

transport gases and wastes, regulates internal temperature and transports hormones and protects against blood loss from injury

Question 2

What is a heart and what dose it do

Answer 2

a muscle that pumps blood through body and generates blood flow

Question 3

What are blood vessels and what do they do

Answer 3

“roadways” for blood ex arteries, veins, capillaries

Question 4

Blood dose what

Answer 4

carries nutrients (O2,CO2 and wastes) and other materials throughout the body

Question 5

where is heart located

Answer 5

slightly left of middle of chest

Question 6

what is heart made up of

Answer 6

cardiac muscle

Question 7

heart contractions are ____ and _____

Answer 7

rhythmical and involuntary

Question 8

What are top left and right versus bottom left and right sides of heart called

Answer 8

Top: Right and Left Atrium
Bottom: Right and Left Venticle

Question 9

what is top right side of heart called
(my left)

Answer 9

right atrium

Question 10

what is top left side of heart called (my right)

Answer 10

left atrium

Question 11

what is bottom left side of heart called (my right)

Answer 11

left ventricle

Question 12

what is bottom right side of heart called (my left)

Answer 12

right ventricle

Question 13

what is atria

Answer 13

two chambers at the top of hear

Question 14

what is ventricles

Answer 14

twi chambers at the bottom of heart

Question 15

what is a septum

Answer 15

thick muscular wall separating the heart through middle ish

Question 16

whats a pericardium

Answer 16

fluid filled membrane surrounding the heart

Question 17

What are Atrioventricular (AV) valves

Answer 17

separate atria from ventricles

Question 18

what are semilunar (SL) valve

Answer 18

separate ventricles from arteries

Question 19

Blue = deoxygenated blood

Answer 19

blood returning from tissues with low O2 and heading towards heart and lungs to get more O2

Question 20

Red=oxygenated blood

Answer 20

blood leaving lungs thats filled with O2 and heading towards tissues to deliver O2

Question 21

opening for blood on top right side of heart

Answer 21

superior vena cava

Question 22

opening for blood on bottom right side of heart

Answer 22

inferior vena cava

Question 23

whats the first step blood pathway

Answer 23

O2 poor blood coming back from the body is pumped thorough the vena cava into the right atrium

Question 24

whats the second step of blood pathway

Answer 24

O2 poor blood flows from right atrium to the right ventricle and then out to the left and right pulmonary arteries to lungs for gas exchange

Question 25

Third step of blood pathway

Answer 25

O2 rich blood from lungs returns to the heart through left and right pulmonary veins

Question 26

4th step of blood pathway

Answer 26

O2 rich blood enters left atrium and then left ventricle

Question 27

5th step of blood pathway

Answer 27

O2 rich blood leaves the heart through the aorta to be delivered throughout the body

Question 28

whats a pulmonary artery/vein

Answer 28

transport artery/vein for I2 and CO2

Question 29

whats the biggest vain

Answer 29

vena cava

Question 30

Describe arteries

Answer 30

- have highly elastic walls - middle layer is thick smooth muscle - thicker walls than veins

Question 31

What do arteries transport

Answer 31

only carries deoxygenated blood from heart to lungs gia pulmonary arteries but usually carries oxygenated blood from left side of heart via aorta throughout body

Question 32

aorta

Answer 32

biggest artery

Question 33

describe capillaries

Answer 33

smallest blood vessels single layer of cells fit diameter is 8 um, super thin for gas, nutrient and waste exchange between blood n cells

Question 34

what do capillaries transport

Answer 34

gas, nutrients and waste on red blood cells to cells

Question 35

describe Veins

Answer 35

thin walls, not as elastic, rely on contractions from skeletal muscles , has valve in middle

Question 36

What do veins transport

Answer 36

Transport deoxygenated blood to heart gia vena cava and oxygenated blood throughout pulmonary veins to lungs

Question 37

when the oxygenated blood leaves heart in what order dose it come back deoxygenated to heart

Answer 37

leaves heart through aorta> artery>arterioles>capillaries > venuoles(small veins)>vena cava in to heart

Question 38

venuoles

Answer 38

small veins

Question 39

blood enters the right atrium through the ________

Answer 39

superior/inferior vena cava

Question 40

blood flows from the right atrium into the right ventricle through the _______

Answer 40

AV valves (atrioventricular)

Question 41

blood is pumped from the right ventricle into pulmonary trunk that splits into right and left ______

Answer 41

pulmonary arteries

Question 42

blood returns from the lungs by way of the right and left _____

Answer 42

pulmonary veins

Question 43

blood enters the _____ when it returns from the lungs

Answer 43

left atrium

Question 44

blood flows past the _____ as it enters the left ventricle

Answer 44

left. Av valve

Question 45

the left ventricle pumps out past the _____ into the aorta

Answer 45

semilunar valves

Question 46

varicose veins

Answer 46

when leaflets of valves fail to close properly causing blood to flow backwards and pool in the veins