Circulatory system

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

What is pulmonary circulation?

• Blood travelling to and from the lungs
• Blood travelling to and from the body
• A blood clot in the lungs
• The vessel that brings blood to the lungs

Coronary arteries...

• supply the heart muscle cells with a supply of blood.

• supply the brain cells with a supply of blood.

• contain deoxygenated blood.

• when clogged, cause a stroke.

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory
• digestive
• muscular
• skeletal

Arteries carry oxygen rich blood away from the heart.

• True

• False

True or false:

Arteries always carry blood away from the heart.

• True

• False

True or false:

Arteries always carry oxygenated blood.

• True

• False

  Compared to arteries, veins 

• have a pleated endothelium.
  
• have thinner walls.
  
• have more smooth muscle in their tunica media. 
• hold their shape better when cut. 

Tags

NGSS.MS-LS4-2

Which of the following does NOT assist in the return of venous blood to the heart?

• veins have one-way valves

• the contraction of skeletal muscles squeeze the vein

• veins have a larger diameter therefore can hold more blood

• the contraction of muscle layers in the veins keeps the blood flowing in the right direction

The type of blood vessel that normally carries de-oxygenated blood back to the heart from body cells?

• arteries

• capillaries

• veins