Digestion

Involuntary muscle contractions which move a bolus through the gastrointestinal tract are called

• mastication

• peristalsis

• defecation

• chyme

Hydrochloric acid is secreted in the _______________ .

• oesophagus

• stomach

• large intestine

• small intestine

Most nutrient absorption occurs in the ________________ .

• mouth

• stomach

• large intestines

• small intestines

Identify the organ that produces bile.

• pancreas

• liver

• gall bladder

• large intestines

Which of the following is the correct order for the major parts of the gastrointestinal tract?

• oesophagus, stomach, large intestine, small intestine, mouth

• mouth, stomach, oesophagus, large intestine, small intestine

• mouth, small intestine, stomach, oesophagus, large intestine

• mouth, oesophagus, stomach, small intestine, large intestine

Which of the following converts starch into maltose?

• maltase

• lactase

• sucrase

• salivary amylase

Protein is broken down into ______________ before they are asborbed into the small intestines.

• fatty acids

• amino acids

• citric acid

• hydrochiloric

____________ in the pancreatic and intestinal juice completes the digestion of fats.

• Amylase

• Renin

• Pepsin

• Lipase

The villi provides a surface area for the absorption of nutrients into the bloodstream.

• True

• False

Glycerol and fatty acids are not used by the cells for building protaplasm and cell membranes.

• True

• False