The muscular tube that extends from the mouth to the anus is called:
- A. the gullet
- B. the intestine
- C. the colon
- D. the alimentary canal
Correct Answer: D
Rationale: The alimentary canal, also known as the digestive tract, is the continuous muscular tube extending from the mouth to the anus, encompassing all digestive organs.
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Match each term with the correct description: made up of organs that rid your body of wastes and control blood volume
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: B
Rationale: The urinary system includes organs that remove wastes and regulate blood volume.
Based on knowledge of the location of the pancreas, how should the student explain the location of the surgical incision?
- A. Upper abdomen, behind the stomach
- B. Right lower quadrant
- C. Left lower quadrant
- D. Right upper quadrant
Correct Answer: A
Rationale: The pancreas is retroperitoneal, located in the upper abdomen behind the stomach.
Parotid gland, all true except:
- A. Secrete 25% of salivary secretion
- B. Formed mainly of mixed acini
- C. Has prominent striated ducts
- D. Its inflammation results in mumps
Correct Answer: B
Rationale: The parotid gland is purely serous, not mixed, secreting watery saliva rich in enzymes.
Match: Lipid
- A. a fat made of three fatty acids joined to one glycerol
- B. composed of monosaccharides
- C. used for enzymatic activity
- D. major source of quick energy
Correct Answer: A
Rationale: Lipids, or triglycerides, consist of three fatty acids attached to a glycerol molecule and provide energy storage.
The break down products of fat molecules can pass directly through the cell membrane. Why?
- A. Fats are soluble in the membrane because the membrane is made of phospholipids
- B. Fats pass through via a protein pump
- C. Fats pass through via a protein channel
- D. Fats are transported through with a special device called a transporter
Correct Answer: A
Rationale: Fat breakdown products (fatty acids and glycerol) are lipid-soluble and can diffuse through the phospholipid bilayer of cell membranes.