Nokea
Which body system is NOT a part of the excretory system?
- A. respiratory system
- B. digestive system
- C. circulatory system
- D. urinary system
Correct Answer: C
Rationale: The circulatory system transports substances but is not directly part of excretion.
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How many muscles does the action of swallowing use?
- A. 92
- B. 6
- C. 60
- D. 29
Correct Answer: D
Rationale: Swallowing involves approximately 29 muscles, including those in the pharynx and esophagus, coordinated by the autonomic nervous system.
The hepatic flexure of the large intestine occurs between the:
- A. transverse colon and descending colon
- B. cecum and ascending colon
- C. ascending colon and transverse colon
- D. descending colon and rectum
Correct Answer: C
Rationale: The hepatic flexure is located between the ascending colon and the transverse colon.
Match each term with the correct description: filtering units of kidney
- A. urethra
- B. nephrons
- C. bladder
- D. kidneys
Correct Answer: B
Rationale: Nephrons are the filtering units within the kidneys.
The juxtaglomerular cells secrete what hormone?
- A. Renin
- B. ADH
- C. Angiotensin
- D. Adrenalin
Correct Answer: A
Rationale: Juxtaglomerular cells secrete renin to regulate blood pressure and filtration.
Mucus is secreted by the :-
- A. Stomach
- B. Duodenum
- C. Large intestine
- D. All of the above
Correct Answer: D
Rationale: Mucus is secreted by the stomach, duodenum, and large intestine for protection and lubrication.