30 Questions
Which of the following is the primary function of digestive system
breaking food into nutrients
What is the role of the epiglottis?
C) Preventing food from entering the trachea
Which enzyme is responsible for breaking down proteins in the stomach?
Pepsin
Where does the majority of nutrient absorption occur?
small inte
main function of bile
emulsify fats
which structure increases SA 4 absorption in small inte
villi
What happens during peristalsis?
C) Muscles contract to move food through the digestive tract
Which section of the small intestine is primarily involved in absorbing vitamin B12 and bile salts?
ileum
How does physical digestion aid chemical digestion?
A) By increasing the surface area of food particles
Which component of pancreatic juice helps neutralize stomach acid?
bicarbonate
Describe the function of the large intestine.
The large intestine absorbs water and electrolytes from indigestible food matter, compacts waste into feces, and expels it through the rectum and anus.
Explain how chronic kidney disease can affect urine production.
Chronic kidney disease reduces the number of functioning nephrons, decreasing the kidney’s ability to filter blood and produce urine, leading to reduced urine output and potential accumulation of waste products in the body.
What are the main causes of constipation?
Main causes of constipation include low fiber diet, dehydration, lack of physical activity, and certain medications.
Name the digestive enzyme responsible for breaking down carbohydrates in the mouth.
amylase
What is the difference between a bolus and chyme?
A bolus is a chewed, moistened lump of food ready for swallowing, whereas chyme is the semi-liquid mixture of partially digested food and digestive juices produced in the stomach.
The process of _______________ moves food through the digestive tract by wave-like muscular contractions.
peristalsis
_______________ is the enzyme that breaks down fats in the small intestine.
lipase
The _______________ is the first section of the small intestine and receives chyme from the stomach.
duodenum
Macrophages in the lymphatic system help by _______________ pathogens and presenting antigens to lymphocytes.
phagocytizing
The __________ and __________ layers of the stomach wall enable it to churn and mix food effectively.
muscular, mucosal
Which of the following organs is not directly involved in the production or storage of bile?
Pancreas
What is the semi-liquid mixture of partially digested food in the stomach called?
chyme
which cells in stomach secrete hydrochloric acid
parietal cells
which structure is primarily responsible for absorption of vitamin B12
ileum
Which hormone stimulates the release of bile and pancreatic juice?
C) Cholecystokinin (CCK)
primary cause of kidney disease
D) All of the above
Which of the following best describes the role of the pancreas in digestion?
B) Secretes digestive enzymes
Which of the following is a symptom of constipation?
D) Both B and C
primary function duodenum
neutralise stomach acid
What is the primary role of hydrochloric acid in the stomach?
C) Creating an acidic environment for enzyme activity
This quiz assesses your knowledge of the primary functions of the digestive system. Test your understanding of the human body's digestive processes.
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