O Levels Biology (5090)•5090/11/M/J/22

Explanation
Matching skin structures to anatomical positions
Steps:
- Recall standard human skin diagram: sweat glands are deep, coiled ducts in dermis; hair follicles are tubular extensions from epidermis into dermis; blood vessels form networks in dermis.
- Identify X as deepest structure, matching sweat gland's position below surface.
- Identify Y as central, shaft-like structure, matching hair follicle.
- Identify Z as tubular, branching network, matching blood vessel.
Why C is correct:
- C aligns with anatomical layout where sweat glands (X) lie below hair follicles (Y) in dermis, with blood vessels (Z) adjacent for nutrient supply.
Why the others are wrong:
- A misplaces blood vessel as X, which is too superficial for vascular networks.
- B swaps X and Y, inverting sweat gland and hair follicle depths.
- D reverses Y and Z, placing hair follicle where blood vessels typically network.
Final answer: C
Topic: Temperature control
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