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Science — CBSE Class 10 board question

Q1. [3]
Name the gland and the hormone secreted by it in scary situations in human beings. List any two responses shown by our body when this hormone is secreted into the blood.
Previously asked in CBSE board exam
2023 31/6/1 Q29(a)
Generated by claude-sonnet-4-6 · 2026-06-15 06:51 · grounding rag
Model Answer

Gland and Hormone: In scary situations, the adrenal glands (located on top of the kidneys) secrete the hormone adrenaline into the blood.

Two responses shown by the body:

  1. Heart beats faster — resulting in more oxygen supply to the muscles.
  2. Breathing rate increases — due to contractions of the diaphragm and rib muscles, supplying more oxygen to the body.

(Other valid responses: blood is diverted from digestive system/skin to skeletal muscles; contraction of muscles around small arteries in digestive system and skin.)

Source: Chapter 6, Section 6.3 — Hormones in Animals

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Explanation
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