Body Systems- 5th Grade Review

Which system moves body parts?

• muscular

• skeletal

• digestive

• respiratory

Answer explanation

The muscular system is responsible for moving body parts through contraction and relaxation of muscles, enabling movement. The skeletal system provides structure, while the digestive and respiratory systems serve different functions.

True or False? Your body systems work separately and do not effect each other.

• True

• False

Answer explanation

False is correct because body systems are interconnected and influence each other. For example, the respiratory system affects the circulatory system by providing oxygen for blood.

Tags

NGSS.MS-LS1-3

What is the main organ in the circulatory system?

• lungs

• brain

• veins

• heart

Answer explanation

The heart is the main organ in the circulatory system, responsible for pumping blood throughout the body. It ensures that oxygen and nutrients are delivered to tissues while removing waste products.

Which is the main organ of the nervous system?

• lung

• kidney

• heart

• brain

Answer explanation

The brain is the main organ of the nervous system, responsible for processing information, controlling movements, and coordinating bodily functions. The other options (lung, kidney, heart) serve different functions in the body.

Which system collects and removes wastes?

• Muscular

• Circulatory

• Digestive

• Excretory

Answer explanation

The excretory system is responsible for collecting and removing waste products from the body, including urine and carbon dioxide, making it the correct choice. The other systems listed do not primarily focus on waste removal.

Your lungs are part of which body system?

• circulatory

• respiratory

• digestive

• muscular

Answer explanation

Your lungs are part of the respiratory system, which is responsible for breathing and gas exchange. The circulatory system transports blood, the digestive system processes food, and the muscular system enables movement.

Tags

NGSS.MS-LS1-3

If you take a rest after running a mile, what happens to your BREATHING rate?

• increases

• decreases

• stays the same

• none of these

Answer explanation

After running a mile, your body needs to recover, leading to a decrease in breathing rate as your muscles require less oxygen and your heart rate slows down during rest.

As your body works harder, what happens to your HEART rate?

• increases

• decreases

• stays the same

• beats backwards

Answer explanation

As your body works harder, it requires more oxygen, leading to an increase in heart rate to pump more blood. Therefore, the correct answer is that your heart rate increases.

What happens to what's left of our food after it goes through the intestines?

• goes back to the stomach

• absorbed into blood

• becomes stomach acid

• disposed of in the bathroom

Answer explanation

After food passes through the intestines, the remaining waste is not absorbed and is ultimately disposed of in the bathroom. This is the final step in the digestive process.

Tags

NGSS.MS-LS1-7

Which part of your digestive system absorbs nutrients into your bloodstream?

• stomach

• intestines

• mouth

• bladder

Answer explanation

The intestines are the primary site for nutrient absorption in the digestive system. While the stomach breaks down food, it is the intestines that transfer nutrients into the bloodstream.