Principles - Anatomy of Nervous System 2 - Week 7 Flashcards
Which 2 general structures are controlled by the somatic nervous system?
Soma (body wall), external environment
Which 2 general structures are controlled by the autonomic nervous system?
Visceral nervous system, internal environment
Is a motor neuron afferent or efferent?
Efferent
Is a sensory neuron afferent or efferent?
Afferent
What is the sensory neuron for the soma called?
Somatic sensory
What is the motor neuron for the soma called?
Somatic moto
What is the sensory neuron for the organs called?
Visceral afferent
What is the motor neuron for the organs called?
Sympathetic/Parasympathetic
What is the sensory neuron for the special sense organs (eyes etc.)?
Special sensory
What is the motor neuron for the special sense organs called (eyes etc.)?
Sympathetic/Parasympathetic
Which CNs are special sensory?
CNI, II & VIII
Which CNs contain purely motor neurons?
CN III, IV, VI, XI, XII
Which CNs contain both special sensory & motor neurons?
CN V, VII, IX, X
Which 2 sensations are detected by mechanoreceptors?
touch, vibration
What is detected by thermoreceptors?
Temperature
What is detected by nociceptors?
Pain
The somatic pathway for touch involves how many neurons?
3
Where is the primary somatosensory area?
Parietal lobe
Where is the primary somatomotor area?
Frontal lobe
Describe the motor neuron to a paralysed muscle.
No motor neuron
Describe the motor neuron to a spastic muscle.
Intact motor neuron but commands from brain aren’t working
What is the effect of the sympathetic nervous system on heart rate?
Increases heart rate
What is the effect of the sympathetic nervous system on GI motility?
Decreases
Sympathetic nerves exit the spinal cord at which levels?
T1-L2
What is the effect of the parasympathetic nervous system on heart rate?
Decreases heart rate
What is the effect of the parasympathetic nervous system on GI motility?
Increases motility
All parasympathetic axons leave via…
CN III, VII, IX, X and sacral nerves
