BIOLOGY - 7 RBW

what best describes the function of the lungs?

• to transport blood to the other side of the heart

• to pump blood through the body

• to prevent blood from flowing backward

• to provide a site for gas exchange with blood

if you hold your breath, what builds up as a waste material in your tissues?

• carbon dioxide

• oxygen

• sugars

• water

what is the name for the smallest blood vessels?

• arteries

• capillaries

• atria

• veins

what is the function of the right atrium?

• to pump blood to the arteries

• to pump blood to the veins

• to pump blood to the left atrium

• to pump blood to the right ventricle

The air sacs that are covered with capillaries where gas exchange takes place.

• diaphragm

• Trachea

• alveoli

• capillaries

What is the function of this structure?

• to pump blood to the body tissues

• to pump blood to the left atrium

• to pump blood to the left ventricle

• to pump blood to the lungs

the circulatory system is important for transporting nutrients and oxygen-rich blood through the body. what is another function of the circulatory system?

• to absorb nutrients from the air

• to absorb oxygen from the air

• to transport air to the lungs

• to transport carbon dioxide to the lungs

which is the definition of pressure?

• area divided by force

• force divided by volume

• area divided by length

• force divided by length

which describe how blood moves into the circulatory system

• high pressure to low pressure

• low pressure to high pressure

• left to right

• top to bottom