Which structure prevents food from entering your lungs when you swallow?

• larynx

• pharynx

• nasal cavity

• trachea

The vocal cords are located inside the _____.

• larynx

• esophagus

• pharynx

• trachea

Which structure, also known as the windpipe, is the main passageway to your lungs?

• pharynx

• trachea

• esophagus

• larynx

The two air passages that lead to each lung are called ______.

• alveoli

• trachea

• windpipes

• bronchi

The microscopic structures in the lungs where gases are exchanged with blood vessels are called_____.

• tracheae

• windpipes

• alveoli

• bronchi

Tags

NGSS.MS-LS1-3

What is the average number of heartbeats per minute for a NORMAL person?

• 17

• 70

• 700

• 7000

The muscular chambers that pump blood to the lungs or body are the _____.

• artia

• aortas

• valves

• ventricles

The smallest blood vessels in your body are called______.

• arteries

• veins

• aortas

• capillaries

The blood vessels that return blood to the heart are called______.

• arteries

• capillaries

• veins

• aortas

What is the purpose of valves?

• to allow blood to flow away from the heart

• to allow blood to travel to and from the lungs

• to prevent blood from flowing in the wrong direction

• to pump blood in the right direction