CN X - PJ. Vagus Flashcards
1
Q
Function
A
sensory, motor, parasympathetic
2
Q
Sensory
A
Pain and pressure in pharynx, larynx, thorax, abdomen
- solitary nucleus
3
Q
Motor - UMN
A
innervate nucleus ambiguous bilaterally
4
Q
Motor - LMN
A
-nucleus ambiguous, ipsilateral soft palate, pharynx, larynx , true vocal folds.
5
Q
Parasympathetic
A
dorsal motor nucleus of X exit medulla -synapse on: glands cardiac muscle thorax abdomen to decrease HR constrict bronchi stimulate digestion
6
Q
Lesions
A
…
7
Q
LMN
A
difficulty swallowing
hoarseness (dysphonia)
inability to raise soft palate
deviation of uvula contralateral
8
Q
parasympathetic
A
disrupts gut reflexes - ulcers
increased HR
9
Q
Bilateral lesions of RF
A
disrupts breathing, vascular resistance
- life support
10
Q
Reflexes
A
…
11
Q
carotid sinus
A
baroreceptors in carotid
12
Q
carotid body
A
chemoreceptors in bronchioles
13
Q
cough, gag, vomit
A
irritants afferent
14
Q
Nuclei
A
solitary nucleus - sensor
ambiguous - motor
dorsal motor nuc. of X - para.
