Control Of Breathing Flashcards
1
Q
What are the two types of breathing control
A
- Neural control
- chemical control
2
Q
What are the characteristics of neural control
A
- can be done voluntarily or involuntarily
- breathing is controlled directly by signals from the brain
- diaphragm and intercostals contract when stimulated
3
Q
What are the characteristics of chemical control
A
- only involuntary
- breathing controlled indirectly through response to chemical changes
4
Q
What does neural mean
A
Controlled by neurons
5
Q
How is neural control involuntary and voluntary control
A
Involuntary - breathing is controlled automatically by respiratory centre
Voluntary - breathing controlled consciously by cerebral cortex
6
Q
What and where are chemoreceptors
A
- in the aorta, carotid artery & medulla oblongata
- chemoreceptors receive information about the chemicals in the blood
7
Q
What changes are chemoreceptors looking for
A
- change in blood CO2 concentration
- change in pH
