Digestion and Circulation

Blood vessels that carry blood away from the heart are called

• Veins

• Arteries

• Capillaries

• Lymphatic Vessels

Tags

NGSS.MS-LS1-3

What substance in the mouth contains an enzyme that begins chemical digestion?

• fiber

• mucus

• pepsin

• saliva

Which of these structures prevents blood from flowing backward

• aorta

• valve

• septum

• coronary artery

When the ventricles contract, blood is pumped

• out of the heart

• into the heart

• through the septum

• into veins

If your pulse rate increases, your heart is beating

• slower than before

• faster than before

• more forcefully than before

• with less pressure than before

Tags

NGSS.HS-LS1-3

What organ produces bile?

• stomach

• small intestines

• pancreas

• liver

In what part of the body does most chemical digestion take place?

• large intestine

• liver

• pancreas

• small intestine

Blood can flow freely through arteries because

• arteries are lined with smooth muscle

• arteries are lined with a layer of smooth epithelial cells

• connective tissue pushes blood through arteries

• arteries have only one layer of cells

What process involves muscle contractions that move food through the esophagus?

• absorption

• peristalsis

• mechanical digestion

• elimination

What structure enables the small intestine to absorb large amounts of nutrients?

• villi

• pancreas

• liver

• gallbladder