NEET BIOLOGY

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HUMAN PHYSIOLOGY

BREATHING AND RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
To some extent, the ‘rate and depth’ of breathing can be controlled voluntarily. Which part of the brain has voluntary control over breathing and where this center send the impulses?
A
Cerebellum, direct impulses to diaphragm and intercostal muscles
B
Cerebral hemisphere, direct impulses to diaphragm and intercostal muscles
C
Cerebral hemisphere, breathing center located in the medulla oblongata
D
Pons, breathing center located in the medulla oblongata
Explanation: 

Detailed explanation-1: -This portion of the brain stem is located just above the spinal cord. It regulates vital functions, such as heartbeat and breathing.

Detailed explanation-2: -The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.

Detailed explanation-3: -The motor cortex within the cerebral cortex of the brain controls voluntary respiration (the ascending respiratory pathway). Voluntary respiration may be overridden by aspects of involuntary respiration, such as chemoreceptor stimulus, and hypothalamus stress response.

Detailed explanation-4: -The respiratory centre in the medulla and pons of the brainstem controls the rate and depth of respiration, (the respiratory rhythm), through various inputs.

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