Pet instructor skill review

177 videos, 8 hours and 30 minutes

Course Content

Breathing mechanisms

Video 24 of 177
2 min 41 sec
English
English
Want to watch this video? Sign up for the course or enter your email below to watch one free video.

Unlock This Video Now for FREE

This video is normally available to paying customers.
You may unlock this video for FREE. Enter your email address for instant access AND to receive ongoing updates and special discounts related to this topic.

Respiratory Process: Inspiration, Expiration, and Gas Exchange

1. Inspiration

Process: During inspiration, the diaphragm muscle contracts, causing the normally dome-shaped diaphragm to flatten.

Result: This increases the chest cavity volume, creating negative pressure between the air in the lungs and the atmosphere, effectively sucking air into the lungs until pressures balance.

2. Expiration

Process: During expiration, diaphragm muscles relax, returning to a dome shape, decreasing the chest cavity volume.

Result: This creates positive pressure, pushing some air out of the lungs.

3. Costal Breathing

Description: Costal breathing is a shallow pattern of breathing through the chest and involves the contraction of the external intercostal muscles.

4. Diaphragmatic Breathing

Description: Diaphragmatic breathing is a deeper method of breathing through abdominal distension, involving the contraction and lowering of the diaphragm.

Benefits: Promoted for relaxation in activities like yoga and linked to improved health.

Note: Rib cage expansion is necessary during labored breathing, like high-intensity aerobic exercise.

5. Gas Exchange

Oxygen Flow: Oxygen is pulled down the bronchi and bronchioles into the alveoli due to negative pressure and concentration gradient.

Diffusion: Gas movement occurs from high to low concentration areas.

Oxygen Exchange: Oxygen diffuses into the bloodstream in the alveoli, binding to hemoglobin in red blood cells.

Carbon Dioxide Exchange: Carbon dioxide disassociates from hemoglobin and diffuses back into the lungs for exhalation.

Transport: Red blood cells, loaded with oxygen, are pumped into the bloodstream via the pulmonary vein towards the heart.