respiratory responses
- Created by: z_mills1
- Created on: 05-06-14 14:04
View mindmap
- Respiratory responses
- 'anticipatory rise' is the minor rise in breathing rate before exercise begins
- when exercise begins there is an immediate and significant increase in breathing rate
- this is the result of receptors e.g. chemoreceptors working in both muscles and joints
- when exercising, nerve impulses send a signal to the respiratory centre in the medulla oblongata and muscles are recruited to support the breathing process
- muscles demand more oxygen after changes in exercise intensity
- carbon dioxide increase as a result of increased energy production - results in an increase in acidity of the blood
- breathing rate increases to satisfy these demands
- capillary network (surrounding alveoli) expands
- results in increased blood flow to the lungs and increased pulmonary diffusion
Comments
No comments have yet been made