Chapter 1 Respiration Flashcards
Which nerve brings message to diaphragm to control breathing?
Phrenic nerve brings impulse to diaphragm to control breathing.
Which nerve brings impulse to intercoastel muscle to contract and relax ?
Intercoastel nerve brings impulse to intercoastel muscle to contract and relax.
Define Neurite.
The collection of axons and dendrites.
Define neuron.
The collection of :
.Dendron
.Axon
.Soma
What is the difference between Neuron and Neurite?
Neuron is the collection of Dendron, Axon and Soma while Neurite is the collection of the Dendroids and axons.
When external intercostal muscles contract the ribs move……
Forward and upward
When external intercostal muscles relax the ribs move……
Inward and downward
When diaphragm skeletal muscles contract , its _______ shape becomes _________ shape
- Dome
- Straight
When diaphragm skeletal muscles relax , its _______ shape becomes _________ shape
- Straight
- Dome
The intra pulmonary pressure during inspiration is _______ or simply ______mmHg less than atmospheric pressure.
- 757 mmHG
- 3
Does the intra pulmonary pressure decrease or increase during inspiration/expiration?
- During inspiration it decreases.
- During expiration it increases.
Normal breathing pressure difference is_________(Numerical value)
Plus minus 3
Main driving forces during expiration are _______ and ________.
- Surface tension
- Lungs elasticity
Lung’s elasticity is due to :
- Collagen
- Elastin
Both the passages ie nasal and buccal cavities unite by the means of________
Nasopharynx
