26 Questions
Where does absorption of nutrients occur in the small intestine?
Mucosa
What is the function of the muscularis externa in the digestive system?
Peristalsis
Where does digestion begin?
Mouth
How does food move from the pharynx to the esophagus?
By muscle contraction
How does the stomach digest food?
Mechanically and chemically
What is the primary function of the gallbladder?
To store and concentrate bile
What is the role of the liver in the body?
To control which nutrients to store and send to the rest of the body
Where does the blood carrying nutrients from the digestive tract flow through?
The liver
What is the first stop in the body for ingested toxins such as alcohol?
The liver
What is the primary function of the digestive system?
To convert ingested food into a usable form
What is the function of the large intestine?
To hold and compact material left over from digestion
What is the role of the digestive tract in the digestive system?
It is a muscular tube that passes through the body from the mouth to the anus
What is an additional function of the large intestine?
To return water to general circulation and absorb vitamins
Which of the following is NOT a function of the digestive system?
To store nutrients for later use
What is the role of accessory digestive organs in the digestive system?
They provide input to the digestive tract
What is the final function of the digestive system?
To eliminate waste from the body
What is the function of the urethra?
To excrete urine to the outside of the body
What triggers the urge to defecate?
Stretching of the rectum due to peristaltic contractions
What is a function of the urinary bladder?
To store urine and expel it into the urethra when necessary
Where are the kidneys located?
On the posterior abdominal wall on each side of the vertebral column
What is a function of the kidneys?
To regulate blood volume and contents, pH and blood pressure
What is the shape of the kidneys?
Bean-shaped
What is the primary function of the renal corpuscle in the nephron?
To filter blood plasma
What is the name of the double-walled cup surrounding the glomerulus in the nephron?
Glomerular (Bowman's) capsule
What is the name of the tube that filtered fluid passes into in the nephron?
Renal tubule
What is the color of urine?
Clear to light yellow
Quiz on the four central functions of the digestive system, including ingestion, digestion, absorption, and elimination. Learn about the processes that occur in the digestive system. Test your knowledge on human nutrition and digestion.
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