All of the following are components of saliva EXCEPT?

All enzymes involved in protein digestion are:

Rationale: Protein-digesting enzymes like pepsinogen and trypsinogen are secreted in an inactive form and activated later.

Which of the following would MOST directly affect the operations of the digestive system?

Rationale: Liver damage directly impacts digestion by reducing bile production, essential for fat breakdown.

Match each term with the correct description: organ that holds urine until it leaves the body

Rationale: The bladder stores urine until it is excreted.

Which process matches the definition: The process of taking food, drink or other substance into the body by swallowing or absorbing it?

Rationale: Ingestion is the act of taking food into the body via the mouth.

The cells of the epithelial lining in the vertebrate stomach are not damaged by HCl because of

Rationale: Mucus secreted by gastric cells forms a protective barrier against HCl, preventing damage to the stomach lining.

Digestive System Exam Questions