Nokea
Secretion of enterogastrone would be stimulated by the presence of:
- A. protein in the small intestine
- B. protein in the stomach
- C. fat in the small intestine
- D. fat in the stomach
Correct Answer: C
Rationale: Enterogastrone secretion is triggered by fats in the small intestine to slow gastric emptying.
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Peyer's patches produce-
- A. Enterokinase
- B. Lymphocyte
- C. Mucous
- D. Trypsin
Correct Answer: B
Rationale: Peyer's patches in the small intestine produce lymphocytes, which are part of the immune system.
Which structure helps to prevent a bolus of food from entering the trachea during deglutition (swallowing)?
- A. collagen
- B. cardiac sphincter
- C. larynx
- D. epiglottis
Correct Answer: D
Rationale: The epiglottis is a flap of cartilage that covers the trachea during swallowing, preventing food from entering the airway.
Which of the following inactivates pepsinogen into active pepsin?
- A. Ptyalin.
- B. HCL.
- C. Bile.
- D. Renin.
Correct Answer: B
Rationale: Hydrochloric acid (HCL) in the stomach activates pepsinogen, converting it into its active form, pepsin.
The primary site for absorption of water by the digestive system is the:
- A. oesophagus
- B. colon (large intestine)
- C. small intestine
- D. liver
Correct Answer: B
Rationale: The colon (large intestine) is the primary site for water absorption, consolidating waste into feces.
Match each term with the correct description: waste liquid containing water, salts, and wastes
- A. urethra
- B. urinary system
- C. bladder
- D. urine
Correct Answer: D
Rationale: Urine is the waste liquid containing water, salts, and metabolic wastes.