SmarterEd

Aussie Maths & Science Teachers: Save your time with SmarterEd

HMS, BM EQ-Bank 52 MC

A volleyball player performs a jump serve. Which respiratory system change enables efficient movement?

  1. Increased gas exchange in the bronchioles
  2. Increased tidal volume as the diaphragm relaxes
  3. Increased pulmonary ventilation as muscles activate
  4. Increased breathing rate to raise blood carbon dioxide levels
Show Answers Only

\(C\)

Show Worked Solution
  • C is correct: Pulmonary ventilation increases as muscles activate, supplying more oxygen to the alveoli for gas exchange.

Other Options:

  • A is incorrect: Gas exchange occurs in the alveoli, not the bronchioles.
  • B is incorrect: Tidal volume increases as the diaphragm contracts, not relaxes.
  • D is incorrect: Breathing rate increases to remove carbon dioxide, not raise it.