Human Body Quiz For Grade 2

2.

Your heart and lungs keep you alive by working together. State true or false.

True
False

Correct Answer

A. True

Explanation

The statement is true because the heart and lungs are essential organs that work together to keep the body alive. The heart pumps oxygenated blood from the lungs to the rest of the body, providing oxygen and nutrients to the cells. The lungs, on the other hand, take in oxygen from the air and remove carbon dioxide, which is then exhaled. This exchange of gases is vital for the body's survival, making the statement true.

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7

3.

What is the function of the lungs?

Take in air and move oxygen through your body
Digest your food
Create an optical illusion
Moves the bones

Correct Answer

A. Take in air and move oxygen through your body

Explanation

The lungs function by taking in air and moving oxygen through the body. They are responsible for the exchange of oxygen and carbon dioxide during the process of respiration. Oxygen is taken in through inhalation and then transported to the bloodstream, where it is delivered to various organs and tissues. Carbon dioxide, a waste product, is then removed from the body through exhalation. This process ensures that the body receives a constant supply of oxygen, which is essential for cellular respiration and overall bodily functions.

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8

4.

Name the tube that connects our throat with the stomach.

Muscle
Blood
Esophagus
Bone

Correct Answer

A. Esophagus

Explanation

The tube that connects our throat with the stomach is called the esophagus. It is a muscular tube that allows food and liquids to pass from the throat to the stomach for digestion. The esophagus plays a crucial role in the digestive system by transporting food through peristalsis, a series of muscle contractions, ensuring that it reaches the stomach for further processing.

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30

5.

Blood without oxygen is blue in color, but blood with oxygen is ______ in color. Complete this statement.

White
Blue
Red
Orange

Correct Answer

A. Red

Explanation

When blood is deoxygenated, it appears blue because of the way light is absorbed and reflected by the blood vessels. However, when blood is oxygenated, it turns bright red. This is because oxygen binds to hemoglobin in the red blood cells, altering its molecular structure and causing it to reflect red light. Therefore, the correct answer is red.

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5

6.

Which of these body organs makes our bones move?

Heart
Lungs
muscles
Blood

Correct Answer

A. muscles

Explanation

Muscles are responsible for making our bones move. They are connected to our bones by tendons and when they contract, they pull on the bones, causing movement. Muscles work in pairs, with one muscle contracting while the other relaxes, allowing for smooth and coordinated movement. The heart, lungs, and blood do not directly contribute to bone movement.

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5

7.

What do bones that fit together make?

Muscles
Skeleton
Lungs
Heart

Correct Answer

A. Skeleton

Explanation

Bones that fit together make a skeleton. The skeleton provides support, shape, and protection to the body. It also allows for movement and serves as an attachment point for muscles. Without a skeleton, the body would not have a framework to support its structure and function properly.

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5

8.

Which of these activities are required to keep our bones and muscles healthy?

Eating bad food
Exercising
Oxygen
Eating healthy

Correct Answer(s)

A. Exercising
A. Eating healthy

Explanation

Exercising and eating healthy are both activities that are required to keep our bones and muscles healthy. Regular exercise helps to strengthen our muscles and bones, improve flexibility, and maintain a healthy weight. It also promotes good blood circulation, which is important for delivering oxygen and nutrients to our muscles and bones. Eating a healthy diet that is rich in essential nutrients like calcium, vitamin D, and protein is also crucial for maintaining strong and healthy bones. Therefore, both exercising and eating healthy are necessary for the overall health and well-being of our bones and muscles.

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9

9.

Which of these body parts are protected by bones?

Skin
Heart
Lungs
Brain
Hair

Correct Answer(s)

A. Heart
A. Lungs
A. Brain

Explanation

The heart, lungs, and brain are protected by bones. The heart is protected by the rib cage, which surrounds it and provides a barrier against external forces. The lungs are also protected by the rib cage, as well as the sternum in the front. The brain is housed within the skull, which acts as a protective covering.

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6

10.

How does the saliva in your mouth help in digestion?

It breaks down the food
It keeps the food soft
It pumps blood in our body
It allows our mouth to move

Correct Answer

A. It breaks down the food

Explanation

Saliva contains enzymes, such as amylase, that help break down carbohydrates in the food we eat. These enzymes start the process of digestion by breaking down complex molecules into smaller, more easily digestible ones. Additionally, saliva moistens the food, making it easier to swallow and allowing it to travel through the digestive system more smoothly. Therefore, the correct answer is that saliva breaks down the food.

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7

Human Body Quiz For Grade 2

Why does your body digest food?

Quiz Preview

Your heart and lungs keep you alive by working together. State true or false.

What is the function of the lungs?

Name the tube that connects our throat with the stomach.

Blood without oxygen is blue in color, but blood with oxygen is ______ in color. Complete this statement.

Which of these body organs makes our bones move?

What do bones that fit together make?

Which of these activities are required to keep our bones and muscles healthy?

Which of these body parts are protected by bones?

How does the saliva in your mouth help in digestion?