7C - Muscles and Bones

Which is a waste product of human respiration?

• nitrogen
• oxygen
• carbon dioxide
• argon

Tags

NGSS.MS-LS1-7

What is the organ labelled W?

• diaphragm

• lung

• trachea

• oesophagus

When you inhale, what do the muscles next to the ribs do?

• Contract to lift the ribs.
• Relax to lift the ribs.
• Contract to lower the ribs.
• Relax to lower the ribs.

What happens to a lot of the oxygen in the lungs?

• It is turned directly into nitrogen.
• It is turned directly into carbon dioxide.
• It enters the blood.
• It catches fire.

Sandy counted 25 beats of her pulse on her wrist in 20 seconds. What was her pulse rate in beats per minute?

• 25 beats
• 45 beats
• 75 beats
• 500 beats

What happens to push blood out of the heart?

• The heart muscle contracts to reduce the volume in the heart chambers.
• The heart muscle relaxes to reduce the volume in the heart chambers.
• The heart muscle contracts to increase the volume in the heart chambers.
• The heart muscle relaxes to increase the volume in the heart chambers.

How is oxygen mainly carried by the blood?

• in the plasma
• on red blood cells
• on white blood cells
• in veins

Capillaries are adapted to their function by:

• being hollow so that they can carry air.
• having thick walls so that oxygen and nutrients cannot escape.
• having thin walls so that oxygen and nutrients can get out of the blood.
• having holes in the walls so that blood can drain out of them.

The drawing shows the bones in a human skeleton. What is bone X used for?

• protection

• movement

• thinking

• growing hair

Look at the skeleton in the last question again. What is the name of joint Y?

• elbow

• knee

• shoulder

• hip