science test the human body

Question 1

What does the Circulatory system carry to all parts of your body?

Answer 1

The Circulatory system carries food, oxygen and waste substances

Question 2

What are the 3 main parts of the Circulatory system?

Answer 2

The 3 main parts of the Circulatory system are the heart, blood vessels and blood

Question 3

Where is the heart found in your body?

Answer 3

The heart is found inside our chest beneath our lungs slightly to the left.

Question 4

What is the job of the heart?

Answer 4

The job of the heart is to pump blood through our body (this process is called circulation)

Question 5

The heart has two sides what does the left side do ?

Answer 5

The left side of the heart pumps blood that contains oxygen around the body

Question 6

What does the right side of the heart do?

Answer 6

The right side of the heart pumps blood without oxygen to the lungs only so that they can recieve oxygen.

Question 7

What is blood?

Answer 7

Blood is a red liquid that flows through our body.

Question 8

What does blood do?

Answer 8

Blood carries food and oxygen to all parts of our body.It also picks up waste products ,such as carbon dioxide ,and carries it to the organs that can get rid of them.

Question 9

What is carbon dioxide and what are the other organs that discard waste products?

Answer 9

Carbon Dioxide is a waste gas that the body must get rid of and kidneys and lungs are organs that also help discard waste products.

Question 10

Where does blood move through?

Answer 10

Blood moves through blood vessels

Question 11

What are the 3 kinds of blood vessels?

Answer 11

The 3 kinds of blood vessels are veins, arteries and capillaries .

Question 12

Fill in the blank
Each blood vessel has a different _________ and __________in the body. Blood vessels run from the _________ to the _______ , around the body and back to the _______. Blood always moves along the same pathway in the ___________.

Answer 12

Structure and function. Heart to the lungs around the body and back to the heart. Blood vessels.

Question 13

label this diagram

Answer 13

Question 14

What does the artery do?

Answer 14

Carries blood containing oxygen and food away from the heart to the body.

Question 15

What does the vein do?

Answer 15

Carries blood that doesnt contain oxygen, to the lungs
.

Question 16

What does the capillaries do?

Answer 16

Joins arteries and veins. Very narrow with thin walls to allow substances, such as food and oxygen, to move through them.

Question 17

What is a heartbeat?

Answer 17

A heartbeat is when your heart contracts to pump blood.

Question 18

Why does the heart pump blood to the lungs before pumping blood to the body?

Answer 18

Because blood that doesn’t contain oxygen must be pumped to the lungs so it can get oxygen then get pumped to the body.

Question 19

Why do we need 3 different blood vessels?

Answer 19

Because each one does a different job in our body .

Question 20

How many times roughly does your heartbeat per minute?

Answer 20

About 90 times but when you’re grown up it beats about 70 times a minute.

Question 21

Fill in the blank
When you run around, your body needs a lot more ________ and _______. The more _______ you are, the more often your _____ needs to beat to supply enough _____ _________ and _________.

Answer 21

Food and oxygen. Active, heart, food particles and oxygen

Question 22

How can you count your heartbeats?

Answer 22

By feeling your pulse.

Question 23

What is your pulse caused by?

Answer 23

By the pressure of your blood as the heart pumps it to the rest of your body.

Question 24

Where are 2 good places to find your pulse?

Answer 24

On the side of your neck and the inside of your wrist.

Question 25

What happens when you find your pulse?

Answer 25

You will feel a small beat under your skin.

Question 26

What is a fair test?

Answer 26

A test that controls all but one variable when attempting to answer a question.

Question 27

Why does only changing one variable make the results accurate?

Answer 27

This allows us to know no other variable has affected the test.

Question 28

What parts does every human respiratory system contain?

Answer 28

2 lungs, air tubes leading from the mouth and nose to the lungs and muscle in the chest that allow air move in and out of the lungs.

Question 29

Where are the lungs located and what protects them?

Answer 29

In the chest and the ribs or ribcage protect the lungs.

Question 30

When you breathe in does your lungs get bigger or smaller? Why is this so?

Answer 30

Bigger because your lungs are filling up with air.

Question 31

When you breathe out do your lungs get bigger or smaller? why is this so?

Answer 31

Smaller because our lungs are pushing out air.

Question 32

What happens when we breathe in ?

Answer 32

Air enters the body through the nose or the mouth. Then the air moves down the windpipe into the lungs then the ribs move upwards and outwards. Then the chest gets bigger, and the lungs fill with air. Then the diaphragm muscle contracts and moves downwards.

Question 33

What happens when we breathe out?

Answer 33

The diaphragm muscle relaxes and moves upwards. The chest gets smaller as air is pushed out of the lungs. The ribs move downwards and inwards. Air from the lungs moves up the windpipe and the air will exit through the mouth or nose.

Question 34

What is an infectious disease?

Answer 34

An infectious disease is an illness which affects humans or animals and can be passed on.

Question 35

What's the meaning of barrier?

Answer 35

Barrier: something that is preventing something from getting through or past it.

Question 36

What is a parasite?

Answer 36

Any living thing that is living on or in the body of another thing is a parasite.

Question 37

What is the host?

Answer 37

the living thing that a parasite infects.

Question 38

what organs are in the excretory system? And what do they produce

Answer 38

kidneys- urine Lungs-carbon dioxide liver-bile Skin-sweat

Question 39

Name the three types of blood vessels in order from largest to smallest?

Answer 39

Artery,Vein,Capillary

Question 40

What muscle in our chest do we use to breath in and out?

Answer 40

Diaphragm

Question 41

What disease is caused by bacteria?

Answer 41

Cholera or pneumonia