Science Exam

Question 1

The control center of the human body. Sends signals throughout the body to make us function.

Answer 1

Brain

Question 2

What is the largest organ of the human body?

Answer 2

Skin

Question 3

What organ is your body’s central control station?

Answer 3

brain

Question 3

Organ used to connect and move bones in the body.

Answer 3

Muscle

Question 4

Breaks down food into nutrients.

Answer 4

Stomach

Question 4

Balances salts and acids in your body and filters blood.

Answer 4

Kidneys

Question 5

It processes the food you eat.

Answer 5

stomach

Question 5

Organ responsible for respiration.

Answer 5

Lungs

Question 6

Stores liquid wastes and excess water (urine)

Answer 6

Bladder

Question 7

Organs found on the inside of your body are called?

Answer 7

internal organs

Question 8

Organs found on the outside of the body are called?

Answer 8

external organs

Question 9

Collects and pumps oxygen throughout the blood stream in your body.

Answer 9

Heart

Question 10

This system includes the heart, blood vessels, veins, arteries

Answer 10

Circulatory System

Question 11

Acts as a protective coat. Keeps fluids and liquids in, keeps bacteria and germs out.

Answer 11

Skin

Question 12

What simple instrument is used to measure pulse rate?

Answer 12

Stopwatch

Question 13

What is the name of the tiny blood vessels where oxygen and nutrients are exchanged with body cells?

Answer 13

Capillaries

Question 14

Which blood cells fight germs and help keep us healthy?

Answer 14

White blood cells

Question 15

How does the heart get oxygen and nutrients?

Answer 15

Through the bloodstream

Question 16

What is the purpose of red blood cells in the circulatory system?

Answer 16

Carrying oxygen to the body

Question 17

Which chamber of the heart pumps oxygen-rich blood to the body?

Answer 17

Left ventricle

Question 18

What is the main organ responsible for pumping blood in the body?

Answer 18

Heart

Question 19

What is the liquid part of blood called?

Answer 19

Plasma

Question 20

Which part of the circulatory system carries oxygen to all parts of the body?

Answer 20

Blood

Question 21

How many chambers are there in the human heart?

Answer 21

Aorta

Question 22

Which of the following is a major blood vessel that carries oxygen-rich blood from the lungs to the heart?

Answer 22

Pulmonary artery

Question 23

Which blood vessels bring oxygen-rich blood back to the heart?

Answer 23

Veins

Question 24

Which blood vessels carry oxygen-rich blood away from the heart?

Answer 24

Arteries

Question 25

What is the purpose of valves in the circulatory system?

Answer 25

To control blood flow

Question 26

How is the nervous system's activity connected to various bodily functions?

Answer 26

It transmits signals to internal organs

Question 27

Which body system originates from the brain and controls movements, thoughts, and automatic responses?

Answer 27

Nervous system

Question 28

What is the nickname often used to refer to the brain due to its color?

Answer 28

Grey matter

Question 29

Which part of the nervous system connects to all the nerves that travel throughout the body?

Answer 29

Peripheral nervous system

Question 30

What is the approximate weight of the human brain?

Answer 30

1.3 kilograms

Question 31

Apart from waste removal, what is another function of the urinary system?

Answer 31

Regulating blood pressure and blood volume

Question 32

Which of the following waste products is commonly filtered out of the blood by the kidneys?

Answer 32

Urea

Question 33

What is the process called when large food molecules are broken down into small soluble food molecules that can be carried in the bloodstream?

Answer 33

Digestion

Question 34

What is the main function of the small intestine?

Answer 34

Absorbing nutrients into the bloodstream

Question 35

What is the main function of the diaphragm during inhalation?

Answer 35

To contract and flatten, increasing chest volume

Question 36

During inhalation, what happens to the volume and pressure in the chest?

Answer 36

Volume increases, pressure decreases

Question 37

What is the waste product formed during the process of cellular respiration?

Answer 37

Carbon dioxide

Question 38

Where is the easiest place to feel your pulse?

Answer 38

Wrist

Question 39

What causes the pulse, which is felt as the expansion and contraction of arteries?

Answer 39

The heartbeat itself

Question 40

What do capillaries do in the circulatory system?

Answer 40

Exchange substances between arteries and veins

Question 41

What is the purpose of the double circulatory system?

Answer 41

To send deoxygenated blood to the body and oxygenated blood to the lungs

Question 42

What is another name for the urinary system?

Answer 42

Excretory system