Exam 15: The Digestive System

The function of mixing movements is to promote digestion and facilitate absorption.

Which of these statements does NOT apply to the colon

When worn-out red blood cells are destroyed, the haemoglobin is degraded to a yellow pigment known as ____________________, which is excreted into the bile.

Parasympathetic stimulation produces a watery saliva rich in enzymes.

What is the term for the terminal portion of the colon

Which of the following factors does NOT slow gastric activities

Match the digestive enzymes, labelled a. through d., with their correct characteristics. -similar to digestive enzyme found in saliva

Match the descriptions, labelled a. through l., with the items listed. -HCl

Which hormones act in the small intestine

Receptive relaxation refers to the voluntary relaxation of the external anal sphincter when the individual is receptive to the defecation reflex.

Match the descriptions, labelled a. through l., with the items listed. -aminopeptidase

The enterogastric reflex promotes gastric emptying.

The extent of absorption of the electrolytes ____________________ and ____________________ is regulated depending on the body's needs.

Match the control mechanisms, labelled a. through d., with the characteristics. (Options may be used more than once or not at all.) -pathway by which factors outside the digestive system can influence digestion

The only function of chewing is to break food up into smaller pieces and soften it by mixing it with saliva to facilitate swallowing.

Which of these statements does NOT apply to the small intestinal digestive enzymes

Slow-wave potentials are always accompanied by contractile activity.

Indicate the site, labelled a. through e., at which digestion of each of the three main categories of foodstuffs commences and is completed. (Options may be used more than once or not at all.) -carbohydrate digestion begins

What are carbohydrates absorbed as

Which of the following happens during vomiting