NUSC 1165 Final Exam 2 Questions With
Guaranteed Pass Solutions 2025.
Digestive system - Answer -Ingestion and digestion of food
-Facilitates the movement of nutrients into the body
-Responsible for eliminating unabsorbed waste
Nervous system - Answer Sends nerve signals to help control the passage of food throughout
the digestive tract
Endocrine system - Answer Produces hormones to regulate food intake and the function of
digestive organs
Urinary system - Answer Elimination of fluids, nitrogen
Respiratory system - Answer Removes CO2
integumentary system - Answer Removes water, sweat, and minerals from the body
Define digestion - Answer - Breaking food into components small enough so it can be
absorbed into the body
- Energy yielding nutrients: carbs, protein, fat
Define absorption - Answer Process of taking substances directly into the body
Function of stomach - Answer -Churns and mixes food
-Secretes acid and a protein-digesting enzyme
Function of small intestine - Answer -Completes digestion
-Absorbs nutrients into the blood or lymph
Function of large intestine - Answer -Absorbs water and some vitamins and minerals
,Accessory organs and functions - Answer -Salivary glands: produce saliva, which contains a
starch-digesting enzyme
-Liver: makes bile, which aids in digestion and absorption of fat
-Pancreas: releases bicarbonate to neutralize intestinal contents and produces enzymes that
digest carbohydrates, protein, and fat
-Gall Bladder: stores bile and releases it into the SI when needed
Structure of gut wall and function - Answer -Layers of Smooth Muscle: contraction and the
breakdown of food
- Connective Tissue: nerves and blood vessels
-External Layer of Connective Tissue: support and protection
-Mucosa: protective layer with life span of 2-5 days
Transit time - Answer The amount of time taken for food to pass through the entire length of
the digestive tract
- Healthy adults: 24-72 hours
Factors affecting transit time - Answer Diet composition, physical activity, medications,
emotions, illnesses
Digestive secretion - Answer Mucus:
-Viscous fluid secreted by glands in the mucosal lining of the GI tract
-Moistens, lubricates, and protects the digestive tract from harsh environments
Enzymes
-Protein molecules that speed up the rate of chemical reactions without undergoing any
changes
, -Stimulated by thought, sight, smell, and presence of food
-Causes muscles contractions that churn, mix, and propel food through the gut
-Stimulate or inhibit gastric secretions
-Coordinate digestive activity with other body functions
Hormones
-Chemical messengers produced in an organ
-Released into the blood and elicit responses at other locations in the body
-Helps prepare different areas of the gut for the arrival of food
-Regulate nutrient digestion and rate of food moving through the system
Cephalic response - Answer Involves signals from the nervous system
- The sights, sounds, and smells of food prepare the digestive system to process the food
components
2 components of saliva - Answer Salivary Amylase: enzyme that starts the initial breakdown of
starch
Lysozyme: enzyme that inhibits bacterial growth that contributes to tooth decay
The pharynx is shared by...? - Answer Respiratory and digestive systems
Epiglottis - Answer Blocks air passages to the lungs as food moves down the digestive tract
Peristalsis - Answer Propels chyme through the small intestine
- Muscular contractions that moves the food down the esophagus
Sphincter - Answer Regulates the passage of food to the stomach
Components of the stomach - Answer -Lining
-Wall
Guaranteed Pass Solutions 2025.
Digestive system - Answer -Ingestion and digestion of food
-Facilitates the movement of nutrients into the body
-Responsible for eliminating unabsorbed waste
Nervous system - Answer Sends nerve signals to help control the passage of food throughout
the digestive tract
Endocrine system - Answer Produces hormones to regulate food intake and the function of
digestive organs
Urinary system - Answer Elimination of fluids, nitrogen
Respiratory system - Answer Removes CO2
integumentary system - Answer Removes water, sweat, and minerals from the body
Define digestion - Answer - Breaking food into components small enough so it can be
absorbed into the body
- Energy yielding nutrients: carbs, protein, fat
Define absorption - Answer Process of taking substances directly into the body
Function of stomach - Answer -Churns and mixes food
-Secretes acid and a protein-digesting enzyme
Function of small intestine - Answer -Completes digestion
-Absorbs nutrients into the blood or lymph
Function of large intestine - Answer -Absorbs water and some vitamins and minerals
,Accessory organs and functions - Answer -Salivary glands: produce saliva, which contains a
starch-digesting enzyme
-Liver: makes bile, which aids in digestion and absorption of fat
-Pancreas: releases bicarbonate to neutralize intestinal contents and produces enzymes that
digest carbohydrates, protein, and fat
-Gall Bladder: stores bile and releases it into the SI when needed
Structure of gut wall and function - Answer -Layers of Smooth Muscle: contraction and the
breakdown of food
- Connective Tissue: nerves and blood vessels
-External Layer of Connective Tissue: support and protection
-Mucosa: protective layer with life span of 2-5 days
Transit time - Answer The amount of time taken for food to pass through the entire length of
the digestive tract
- Healthy adults: 24-72 hours
Factors affecting transit time - Answer Diet composition, physical activity, medications,
emotions, illnesses
Digestive secretion - Answer Mucus:
-Viscous fluid secreted by glands in the mucosal lining of the GI tract
-Moistens, lubricates, and protects the digestive tract from harsh environments
Enzymes
-Protein molecules that speed up the rate of chemical reactions without undergoing any
changes
, -Stimulated by thought, sight, smell, and presence of food
-Causes muscles contractions that churn, mix, and propel food through the gut
-Stimulate or inhibit gastric secretions
-Coordinate digestive activity with other body functions
Hormones
-Chemical messengers produced in an organ
-Released into the blood and elicit responses at other locations in the body
-Helps prepare different areas of the gut for the arrival of food
-Regulate nutrient digestion and rate of food moving through the system
Cephalic response - Answer Involves signals from the nervous system
- The sights, sounds, and smells of food prepare the digestive system to process the food
components
2 components of saliva - Answer Salivary Amylase: enzyme that starts the initial breakdown of
starch
Lysozyme: enzyme that inhibits bacterial growth that contributes to tooth decay
The pharynx is shared by...? - Answer Respiratory and digestive systems
Epiglottis - Answer Blocks air passages to the lungs as food moves down the digestive tract
Peristalsis - Answer Propels chyme through the small intestine
- Muscular contractions that moves the food down the esophagus
Sphincter - Answer Regulates the passage of food to the stomach
Components of the stomach - Answer -Lining
-Wall
