Question

which of the following organ receive electrical messages from brain for breathing in and out
(a) Diaphragm
(b) Bronchi
(c) Bronchioles
(d) Alveoli​

Answer 1

Answer:

Option (a) Diaphragm

Explanation:

• The diaphragm, a characteristic of mammals is a highly muscular, fibrous, and dome-shaped partition of the body cavity into the thoracic and abdominal cavities.

• During inspiration, the diaphragm along with external intercostal muscles contract simultaneously. Flattening or lowering of the diaphragm allows the air into the lungs.

• The phrenic nerve plays a critical role in breathing and is completely controlled by a complex neural network of phrenic motor neurons regulating diaphragm muscle fibers.

Therefore (a) Diaphragm receives electrical messages from the brain for breathing in and out.

Answer 2

Option a) Diaphragm receives electrical messages from brain for breathing in and out.

• The most important muscle used in the process of breathing is called the diaphragm.
• The air can travel in and out of the lungs due to the action of the diaphragm.
• Mammals have diaphragms while vertebrates and amphibians, that breathe with the help of nostrils, have diaphragm-like structures.
• The nerves that send signals to the diaphragm begin from cranial nerves 3, 4, and 5.
• These nerves join to become the phrenic nerve in the diaphragm.
• The phrenic nerves, intercostal nerves, and subcoastal nerves help in the exchange of signals.