Nokea
If the kidney is damaged it may result in reduced erythrocytes. Why?
- A. Kidney makes erythropoietin. If it is damaged the hormone production decreases and therefore erythrocyte production decreases
- B. The kidney stimulates iron uptake. If it is damaged the iron levels decrease and therefore erythrocyte production decreases
- C. The kidney maintains the health of erythrocytes so if it is damaged they die more quickly
- D. The injured kidney needs erythrocytes to repair itself they therefore get used up more quickly
Correct Answer: A
Rationale: Kidney damage reduces erythropoietin, a hormone that stimulates red blood cell production.
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One of the following is not a constituent of saliva:-
- A. Bicarbonate
- B. Lysozyme
- C. Glucose
- D. Immunoglobulin
Correct Answer: C
Rationale: Saliva does not contain glucose; it includes bicarbonate, lysozyme, and immunoglobulins.
Urine leaves the body through a tube called
- A. the urethra
- B. the ureter
- C. the bladder
- D. the nephron
Correct Answer: A
Rationale: The urethra is the tube through which urine exits the body.
Which of the given enzymes is responsible for the digestion of milk protein?
- A. Erepsin
- B. Trypsin
- C. Pepsin
- D. Rennin
Correct Answer: D
Rationale: Rennin is responsible for the digestion of milk protein. Rennin is present in the human body in its inactive form called prorenin. When we consume milk, it reacts with the hydrochloric acid present in the stomach. Hydrochloric acid activates the inert prorenin and converts it into active Rennin.
Crypts of Lieberkuhn are present in :-
- A. Intestine
- B. Stomach
- C. Oesophagus
- D. All of these
Correct Answer: A
Rationale: Crypts of Lieberkuhn are found in the small and large intestines.
About Vermilion zone, all true except:
- A. Covered by modified skin
- B. Transitional zone between outer & inner labial surfaces.
- C. Its epithelium is thicker than skin covering outer labial surface
- D. The dermal papillae beneath the epidermis are numerous, deep and highly vascular.
Correct Answer: C
Rationale: The vermilion zone's epithelium is thinner than the outer labial skin, not thicker, allowing the underlying vascularity to show through, giving it a red appearance.