Fill up the blanks in the following paragraph by selecting...

Fill up the blanks in the following paragraph by selecting the correct option. The movement of air into and out of the lungs is carried out by creating a (i) between the lungs and the atmosphere. Inspiration can occur if intra-pulmonary pressure is (ii) than the atmospheric pressure, Expiration takes place when the intra-pulmonary pressure is (iii) than the atmospheric pressure. Inspiration is initiated by the (iv) of diaphragm which (v) the volume of thoracic chamber in the antero-posterior axis. (i) (ii) (iii) (iv) (v) (a) Concentration less higher relaxation increases gradient (b) Concentration higher less contraction decreases gradient (c) Pressure higher less relaxation deqeases gradient (d) Pressure less higher contration increases gradient

Fill up the blanks in the following paragraph by selecting the correct option. The movement of air into and out of the lungs is carried out by creating a (i) between the lungs and the atmosphere. Inspiration can occur if intra-pulmonary pressure is (ii) than the atmospheric pressure, Expiration takes place when the intra-pulmonary pressure is (iii) than the atmospheric pressure. Inspiration is initiated by the (iv) of diaphragm which (v) the volume of thoracic chamber in the antero-posterior axis.
(i)
(ii) (iii)
(iv)
(v)
(a) Concentration less higher relaxation increases gradient
(b) Concentration higher less contraction decreases gradient
(c) Pressure higher less relaxation deqeases gradient
(d) Pressure less higher contration increases gradient

Key Concepts

Pressure Gradient

A pressure gradient refers to the difference in pressure between two regions—in this context, between the lungs (intrapulmonary pressure) and the outside atmosphere. This difference is crucial for driving airflow into and out of the lungs during the breathing process, as air naturally flows from areas of higher pressure to areas of lower pressure.

Intrapulmonary Pressure

Intrapulmonary pressure, also known as alveolar pressure, is the pressure within the lung's alveoli. Its variations relative to atmospheric pressure determine the direction of airflow: during inspiration, a decrease in intrapulmonary pressure below atmospheric pressure draws air into the lungs, while during expiration, an increase above atmospheric pressure forces air out of the lungs.

Diaphragmatic Contraction

Diaphragmatic contraction involves the shortening and flattening of the diaphragm, a primary muscle of respiration. This contraction increases the volume of the thoracic cavity, which in turn lowers the intrapulmonary pressure, facilitating inspiration by drawing air into the lungs.

Thoracic Chamber Volume

Thoracic chamber volume pertains to the space within the chest cavity that houses the lungs and heart. Changes in this volume, primarily due to movements of the diaphragm and other respiratory muscles, are essential for altering intrapulmonary pressure and thereby driving the mechanics of breathing.

Transcript

00:01 Let's start the question.

00:02 Actually in this question they gave us five fill in the blanks regarding the respiration or breathing process in humans.

00:10 Let's fill this up.

00:11 Okay.

00:12 So actually first this breathing, that is inspiration and expiration occurs due to a difference in pressure.

00:21 We call it change in pressure.

00:23 Okay.

00:25 Here the air moves from high pressure area to low pressure area.

00:30 This change in pressure is called as pressure gradient, okay? pressure gradient.

00:37 So the answer for the first fill up is pressure gradient.

00:41 Now let's move for the second fill up.

00:45 Okay.

00:46 Yeah, second fill up is also easy.

00:48 Actually they are asking about inspiration.

00:51 Let's do that.

00:52 For inspiration, that is breathing in of air, what happens? pressure outside the lungs is higher that is atp is higher than the pressure inside the lungs pressure inside lungs is called as intra pulmonary pressure therefore what happens air moves from atmosphere we call it okay atmosphere to lungs that is inside our lungs so the answer for the second philip is less that is pulmonary pressure, intra -pulmonary pressure is less than the atmospheric pressure.

01:34 Now let's talk about the expiration.

01:36 Expiration is totally opposite...

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