Regulation of Breathing During Exercise and Recovery Flashcards
What are the two additional muscles that help with inspiration during exercise
- Sternocleidomastoid
2. Pectoralis minor
What are the two additional muscles that aid with expiration during exercise
- Internal intercostals
2. Rectus abdominus
Is inspiration active or passive during exercise
Active
Is expiration active or passive during exercise
Active
During inspiration the diaphragm and external intercostals…
Contract more
During inspiration the sternocleidomastoid and pectoralis minor…
Contract
During inspiration the rib cage moves…
Up and out more
During inspiration the volume of the thoracic cavity…
Increases more
During inspiration the pressure inside the lungs…
Decreases more
During exercise a larger volume of air moves…
Into the lungs
As a result of the changes to inspiration and expiration, what happens to breathing
Breathing frequency increases
During expiration, the external intercostals and diaphragm…
Relax more
During expiration the rectus abdominus and internal intercostals…
Contract
During expiration the rib cage moves…
Down and in more
During expiration the volume of the thoracic cavity…
Decreases more
During expiration the pressure inside the lungs…
Increases more
During expiration a greater visual of air moves…
Out the lungs
What is the chemical control receptor
The chemoreceptors
What are the three neural control receptors
- Thermoreceptors
- Proprioceptors
- Baroreceptors
Define the respiratory control centre (RCC)
The RCC is situated in the brain and controls breathing rate and depth
Define what the inspiratory centre does (IC)
Part of the RCC that controls inspiration
Define what the expiratory centre is (EC)
The EC is part of the RCC that controls expiration
Define what the phrenic nerve is
The phrenic nerve stimulates the diaphragm to contract
Define what the intercostal nerve does
The intercostal nerve stimulates the external intercostals to contract
Describe what the Hering-Breuer reflex is (3 parts)
- Specialised baroreceptors between ribs that monitor lung stretch
- When a threshold is reached it stimulates the EC to become active which stimulates the additional muscles to contract
- Causes a faster and greater expiration
