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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
Diaphragm is:
  • A
    Dome shaped muscle
  • B
    Oblique muscle
  • C
    Round muscle
  • D
    Elongated muscle
✓

Answer

  1. Dome shaped muscle

Explanation:

The diaphragm is a part of the abdominopelvic cavity.

It is located below the thoracic cavity and above the pelvic cavity.

Its dome-shaped roof is the thoracic diaphragm, a thin sheet of muscle under the lungs, and its floor is the pelvic inlet, opening into the pelvis. Hence, the diaphragm is a dome-shaped muscle.

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