transport in humans

Question 1

where is the food we eat

Answer 1

digestive system

Question 2

where is the oxygen we breath

Answer 2

in our lungs

Question 3

what do all cells require

Answer 3

energy

Question 4

the food and oxygen are far from the _

Answer 4

cells

Question 5

transport system

Answer 5

~food and oxygen need to be taken to each cell ~the waste substances produced by each cell is taken away to excretory organs such as the skin lungs and kidneys

Question 6

name the two systems the transport system is made up of

Answer 6

circulatory system and lymphatic system

Question 7

what is the heart , blood vessels and blood tissue made up of

Answer 7

human circulatory system

Question 8

the heart

Answer 8

a hollow organ the size of your closed fist

Question 9

what are the walls of the heart made up of

Answer 9

very thick muscles that are specialized and found only in the heart

Question 10

what are the muscles in the heart called

Answer 10

cardiac muscles

Question 11

cardiac muscles

Answer 11

very strong muscles which do not get tired easily

Question 12

where is the heart

Answer 12

in the middle of the chest cavity or thorax and its pointed end or apex it turned slightly to the left

Question 13

what is the heart surrounded by

Answer 13

by the lungs

Question 14

the heart is protected by

Answer 14

the ribs and sternum

Question 15

what holds it in position

Answer 15

blood vessels

Question 16

pericardium

Answer 16

a strong double walled sac

Question 17

how does the pericardium feel

Answer 17

slippery

Question 18

the purpose of pericardium

Answer 18

to reduce friction between the heart and the other organs it may touch

Question 19

coronary arteries and coronary veins

Answer 19

small blood vessels that run on the surface of the heart and run to and from the heart muscles

Question 20

what are the two large arteries that lead away from the heart

Answer 20

pulmonary artery and aorta

Question 21

pulmonary artery

Answer 21

carries de-oxygenated blood to the lungs

Question 22

aorta

Answer 22

carries oxygenated blood to all the parts of the body

Question 23

superior vena cava and inferior vena cava

Answer 23

carries de-oxygenated blood to the right side of the heart

Question 24

pulmonary veins

Answer 24

bring oxygenated blood back from the lungs to the left side of the heart

Question 25

how many chambers are in the human heart

Answer 25

four

Question 26

structure of the two upper chambers

Answer 26

small and thin walled

Question 27

function of the two upper chambers

Answer 27

they only pump blood over a short distance to the ventricles just below them

Question 28

what are the two upper chambers called

Answer 28

atria (singular atrium)

Question 29

what are the two lower chambers called

Answer 29

ventricles

Question 30

structure of the two lower chambers

Answer 30

large and have thick muscular walls

Question 31

function of the two lower chambers

Answer 31

pump blood over a long distance to the lungs and the rest of the body

Question 32

septum

Answer 32

heart muscle that that separates the left atrium from the right atrium and the left ventricle from the right ventricle

Question 33

how many valves does the heart have

Answer 33

four

Question 34

name the valves found in the heart

Answer 34

tricuspid valve ,bicuspid valve ,two sets of semi -lunar valves

Question 35

where does tricuspid occur

Answer 35

between the right atrium and the right ventricle

Question 36

function of tricuspid

Answer 36

prevents blood from flowing back into the right atrium when the right ventricle contracts

Question 37

where does the bicuspid occur

Answer 37

occurs between the left atrium and the left ventricle

Question 38

bicuspid function

Answer 38

prevents blood from flowing back into the left atrium when the left ventricle contracts

Question 39

where does the semi -lunar valves occur

Answer 39

at the beginning of the pulmonary artery and the other occurs at the beginning of the aorta

Question 40

function of the semi -lunar valves

Answer 40

prevents blood from flowing back into the ventricles when they relax