A&P 2: Digestive System (Exam 3) With Full Set Correct Answers| 2026 Update

A&P 2: Digestive System (Exam 3) With
Full Set Correct Answers| 2026 Update



Functions of the Digestive System: (5) - Ans--1) Ingestion
2) Mixing ingested food w/ digestive fluids
3) Digestion
4) Absorption of nutrients
5) Elimination of waste

Mechanical digestion: - Ans--Physically breaking down food into smaller
particles

Chemical digestion: - Ans--Enzyme reactions to breakdown food
components

Elimination of waste: - Ans--Defecation

Gastrointestinal Tract (alimentary canal): - Ans--Oral cavity (mouth)
Pharynx
Esophagus
Stomach
Small intestine
Large intestine

Accessory Structures of digestive system: - Ans--Teeth
Tongue
Salivary glands
Liver
Gallbladder
Pancreas

The GI tract local nervous system: - Ans--Enteric nervous system

, 2 nerve plexuses located in the walls of the GI tract: - Ans--1) submucosal
nerve plexus
2) Myenteric nerve plexus

Submucosal nerve plexus regulates... - Ans--blood flow & GI gland
secretions

Myenteric nerve plexus regulates... - Ans--GI motility

The enteric nervous system is connected to, and can be controlled by: -
Ans--The central nervous system (CNS)

Digestive system activity is controlled by: - Ans--both local and CNS
impulses

Parietal peritoneum - Ans--Lines the wall of the abdominal (and pelvic)
cavity

Visceral peritoneum - Ans--Covers the surface of the abdominal (and
pelvic) organs

Peritoneal cavity - Ans--Space between the two layers of peritoneum;
Contains a small amount of fluid

Peritoneal folds - Ans--Extensions of the peritoneum that hang down and
suspend the organs from the abdominal walls

Peritoneal folds contain the... - Ans--blood vessels, nerves, and lymphatics
supplying the organs

Functions of the oral cavity & associated structures: - Ans--Mechanical
digestion and chemical digestion

Mastication - Ans--mechanical digestion; tear food into smaller pieces &
form soft bolus for swallowing

chemical digestion - Ans--enzymes in the saliva