Nokea
Where does most nutrient absorption occur?
- A. Stomach
- B. Small intestine
- C. Large intestine
- D. Mouth
Correct Answer: B
Rationale: The correct answer is B: Small intestine. The small intestine is where most nutrient absorption occurs due to its large surface area, specialized villi, and microvilli that increase absorption efficiency. Digestive enzymes and bile are also secreted here to further break down nutrients. Stomach (A) primarily aids in digestion, not absorption. Large intestine (C) mainly absorbs water and electrolytes, not nutrients. Mouth (D) begins the digestion process by mechanical breakdown and some enzyme release, but minimal absorption occurs here.
You may also like to solve these questions
Ferritin is a globular protein that transports and stores ______ in the liver and blood.
- A. glycogen
- B. lipids
- C. vitamin B12
- D. iron
Correct Answer: D
Rationale: The correct answer is D: iron. Ferritin is a protein that binds and stores iron in the liver and blood. It plays a crucial role in regulating iron levels in the body. Glycogen (A) is a storage form of glucose, not stored by ferritin. Lipids (B) are not stored by ferritin either. Vitamin B12 (C) is mainly stored in the liver bound to specific proteins, not ferritin. Iron is the correct answer as it aligns with the main function of ferritin in iron transport and storage.
Regarding pancreatic secretion:
- A. Trypsin is secreted in the active form.
- B. CCK stimulates the secretion of bicarbonate.
- C. Secretin stimulates the secretion of enzymes.
- D. Chemotrypsinogen is activated by trypsin.
Correct Answer: D
Rationale: Correct Answer: D
Rationale:
1. Chemotrypsinogen is the inactive precursor of chymotrypsin.
2. Trypsin activates chemotrypsinogen to form active chymotrypsin.
3. This activation occurs in the small intestine, enabling protein digestion.
Summary:
A: Trypsin is secreted as an inactive zymogen, not in the active form.
B: CCK stimulates enzyme secretion, not bicarbonate.
C: Secretin mainly stimulates bicarbonate secretion, not enzymes.
Compounds containing aspirin are discontinued at least how many weeks before ileostomy surgery?
- A. 1
- B. 2
- C. 3
- D. 4
Correct Answer: B
Rationale: Aspirin and other anticoagulants should be stopped at least two weeks before surgery to minimize bleeding risks.
The portion of a tooth which lies within the mandible socket is called the _____.
- A. dentin
- B. crown
- C. root
- D. cementum
Correct Answer: C
Rationale: The correct answer is C: root. The root of a tooth is the portion that lies within the mandible socket, anchoring the tooth in place. The root helps support the tooth and allows for the transfer of nutrients. Dentin (A) is the hard tissue beneath the enamel, crown (B) is the visible part of the tooth above the gumline, and cementum (D) covers the root surface but is not the portion within the mandible socket.
Checking for the return of the gag reflex and monitoring for LUQ pain, nausea and vomiting are necessary nursing actions after which diagnostic procedure?
- A. ERCP
- B. Barium swallow
- C. Colonoscopy
- D. Esophagogastroduodenoscopy (EGD)
Correct Answer: D
Rationale: After EGD the gag reflex should return and the nurse should monitor for complications like LUQ pain nausea or vomiting.