Explain the mechanism of breathing in humans class 10

Asked by admin @ 17/08/2021 in Biology viewed by 328 People

Define breathing explain the mechanism of breathing in human being

Answered by admin @ 17/08/2021

The process of taking air into and expelling it from the lungs is called breathing.
The action of breathing in and out is due to changes of pressure within the thorax, in comparison with the outside. This action is also known as external respiration. When we inhale the intercostal muscles (between the ribs) and diaphragm contract to expand the chest cavity. The diaphragm flattens and moves downwards and the intercostal muscles move the rib cage upwards and out.

This increase in size decreases the internal air pressure and so air from the outside (at a now higher pressure that inside the thorax) rushes into the lungs to equalise the pressures.

When we exhale the diaphragm and intercostal muscles relax and return to their resting positions. This reduces the size of the thoracic cavity, thereby increasing the pressure and forcing air out of the lungs.

Explain the mechanism of breathing in humans class 10

Similar Questions

Describe the mechanism of breathing in human beings class 10

Explain the role of human in resource development class 10

Explain the process of excretion in human beings class 10

Explain the process of breathing in man class 10

Explain the mechanism of breathing in human beings

Communalism can take various forms in politics explain class 10

What is a third class lever in the human body

How would you explain the rise of napoleon class 9th

How would you explain the rise of napoleon class 9

Explain the process of fertilization in plants class 10

Explain the process of unification of italy class 10

Explain where and how urine is produced class 10

Explain why the planets do not twinkle class 10

Explain one way humans have impacted the environment in africa

Describe the mechanism of breathing in human beings

Most viewed questions in Biology

Dinesh super simplified science biology class 10 pdf free download

Write a few lines of dialogue based on this narrative

When should you refuse to accept food in a shipment

Observe and describe the floral parts of brassica flower

A food worker is putting chemicals into clean spray bottles

Glowing butterfly wings

To what extent do you believe mrs. zahari received effective, safe, and patient-centered care?

Studying one trait at a time ensures that multiple are not changing simultaneously.

Which precautions you have taken in porating of microscope

Birds on an island lab answers

(-3,0);slope =2/3

A major disturbance that caused the ecosystem to stabilize at a new equilibrium.

What morphology is represented in the picture?

Imagine you do dna fingerprinting in a forensics lab apex

In both poems the connotation of the underlined language implies