Crash Course Digestive System 2

What was the unique condition of Alexis St. Martin that allowed Dr. Beaumont to study digestion?

• An unusual allergic reaction

• A unique dietary habit

• A permanent opening in his stomach

• A rare digestive enzyme

What initiates the breakdown of starches into glucose in the mouth?

• Hydrochloric acid

• Bile

• Salivary amylase

• Pepsin

What is the primary function of the mucous cells in the stomach?

• To digest proteins

• To produce digestive enzymes

• To protect stomach lining from acid

• To absorb nutrients

Which cells in the stomach release hydrochloric acid?

• Chief cells

• Parietal cells

• G-cells

• Mucous cells

Which hormone is primarily responsible for stimulating gastric activity?

• Glucagon

• Serotonin

• Gastrin

• Insulin

Tags

NGSS.MS-LS1-7

Which phase of stomach regulation is influenced by the sight or smell of food?

• Esophageal phase

• Cephalic phase

• Gastric phase

• Intestinal phase

What role does the cephalic phase play in digestion?

• It processes nutrients absorbed in the stomach.

• It begins when food reaches the small intestine.

• It starts with sensory experiences related to food.

• It only activates during physical eating.

What triggers the release of gastrin in the stomach?

• Intake of carbohydrates

• Absorption of vitamins

• Decrease in stomach pH

• Increase in stomach pH

Tags

NGSS.HS-LS1-3

What is the creamy paste formed in the stomach called?

• Bile

• Bolus

• Enzyme mix

• Chyme

Tags

NGSS.MS-LS1-7

What common factor can trigger vomiting?

• Sleeping immediately after eating

• Drinking water

• Eating too quickly

• Consuming too much food