The correct statement about inspiration is "Intrapulmonary pressure decreases".

Here's why:

a. Tidal volume decreases - This is false. Tidal volume is the amount of air that is inhaled or exhaled during normal breathing. During inspiration, the tidal volume actually increases because you're taking in air.

b. Intrapulmonary pressure decreases - This is true. During inspiration, the diaphragm and intercostal muscles contract, increasing the volume of the lungs. This increase in volume causes a decrease in pressure within the lungs (intrapulmonary pressure), allowing air to flow in.

c. Diaphragm relaxes - This is false. During inspiration, the diaphragm contracts, not relaxes. This contraction increases the volume of the thoracic cavity, allowing air to flow into the lungs.

d. Abdominal muscles are recruited - This is generally false. During normal, restful breathing, the abdominal muscles are not significantly involved. They may be recruited during forceful breathing or certain types of exercise.

e. It is controlled by the vagus nerve - This is false. The primary control of breathing is through the medulla oblongata and pons in the brainstem, not the vagus nerve. The vagus nerve does play a role in sending sensory information to the brain about lung stretch and other factors, but it's not the primary controller of breathing.

Question

The correct statement about inspiration is "Intrapulmonary pressure decreases".

Here's why:

a. Tidal volume decreases - This is false. Tidal volume is the amount of air that is inhaled or exhaled during normal breathing. During inspiration, the tidal volume actually increases because you're taking in air.

b. Intrapulmonary pressure decreases - This is true. During inspiration, the diaphragm and intercostal muscles contract, increasing the volume of the lungs. This increase in volume causes a decrease in pressure within the lungs (intrapulmonary pressure), allowing air to flow in.

c. Diaphragm relaxes - This is false. During inspiration, the diaphragm contracts, not relaxes. This contraction increases the volume of the thoracic cavity, allowing air to flow into the lungs.

d. Abdominal muscles are recruited - This is generally false. During normal, restful breathing, the abdominal muscles are not significantly involved. They may be recruited during forceful breathing or certain types of exercise.

e. It is controlled by the vagus nerve - This is false. The primary control of breathing is through the medulla oblongata and pons in the brainstem, not the vagus nerve. The vagus nerve does play a role in sending sensory information to the brain about lung stretch and other factors, but it's not the primary controller of breathing.

Knowee AI · Accepted Answer

The correct statement about inspiration is "Intrapulmonary pressure decreases".

Here's why:

a. Tidal volume decreases - This is false. Tidal volume is the amount of air that is inhaled or exhaled during normal breathing. During inspiration, the tidal volume actually increases because you're taking in air.

b. Intrapulmonary pressure decreases - This is true. During inspiration, the diaphragm and intercostal muscles contract, increasing the volume of the lungs. This increase in volume causes a decrease in pressure within the lungs (intrapulmonary pressure), allowing air to flow in.

c. Diaphragm relaxes - This is false. During inspiration, the diaphragm contracts, not relaxes. This contraction increases the volume of the thoracic cavity, allowing air to flow into the lungs.

d. Abdominal muscles are recruited - This is generally false. During normal, restful breathing, the abdominal muscles are not significantly involved. They may be recruited during forceful breathing or certain types of exercise.

e. It is controlled by the vagus nerve - This is false. The primary control of breathing is through the medulla oblongata and pons in the brainstem, not the vagus nerve. The vagus nerve does play a role in sending sensory information to the brain about lung stretch and other factors, but it's not the primary controller of breathing.

Which of the following statements about inspiration is true?Question 22Answera.Tidal volume decreasesb.Intrapulmonary pressure decreasesc.Diaphragm relaxesd.Abdominal muscles are recruitede.It is controlled by the vagus nerve

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