Breathing is partially under voluntary control, which explains why you can hold your breath. When carbon dioxide levels in the blood reach too high a concentration, however, breathing is triggered involuntary.

BREATHING AND RESPIRATION

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	True:You can control your breathing CO2 reaches a too high concentration gradient
B	False:Breathing is always involuntary and never can be controlled mannually
C	Either A or B
D	None of the above

Explanation:

Detailed explanation-1: -What Happens When You Hold Your Breath? The first thing that happens when you hold your breath is oxygen levels decrease. Then, carbon dioxide levels increase because your body gets rid of that gas by breathing out. This state is called hypoxia.

Detailed explanation-2: -Voluntary control of breathing is mediated by the descending corticospinal tract and its influence on the motor neurons innervating the diaphragm and intercostal muscles.

Detailed explanation-3: -The breathing muscles are controlled automatically from the brainstem during normal breathing but can also be controlled voluntarily from the motor cortex.

Detailed explanation-4: -There are limits on the conscious control of breathing. For example, it is not possible for a healthy person to voluntarily stop breathing indefinitely. Before long, there is an irrepressible urge to breathe. If you were able to stop breathing for a long enough time, you would lose consciousness.

There is 1 question to complete.

NEET BIOLOGY

HUMAN PHYSIOLOGY

BREATHING AND RESPIRATION