unit 7: sympathetics, distrib FROM symp trunk Flashcards
fibers are carried from the symp trunk in three ways:
nerves
BV
direct branches
almost all nerves carry POSTganglionic symp fibers, w/i that nerves distribution, the fibers will be (3):
vasoconstrictor
sudomotor
motor to arrector pili
type of branch that functions to:
- constrict BC
- dilate bronchial tree
- stim gland secretion
- dilate pupils
- inhib digestive activity
direct to the viscera
three nerves that receive branches from the SUPERIOR cervical ganglion
glossopharyngeal
vagus
-recurrent laryngeal & auricular
hypoglossal
__ __ nerve is a branch from the SCG that enters the cranial cavity with the internal carotid a. and divides into lat & med branches
internal carotid
the ___ internal carotid nerve forms the internal carotid plexus, many of its branches will terminate on BV in the skull
lateral
communication w/ the __ ganglion allows __ganglionic symp fibers to reach any struct w/i field of distrib of trigeminal nerve
trigeminal
post
branch off the internal carotid plexus that supplies BV in lateral rectus
abducens
POSTganglionic fibers off the internal carotid n. form the __ __ nerve which combines w/ the greateral petrosal nerve to form the nerve of the __ __
deep petrosal
pterygoid canal
4 glands that are reached by postganglionic fibers stemming ultimately off the internal carotid n.
lacrimal
nasal
palatine
(some pharyngeal)
___ nerves combine w/ the tympanic branch of glossopharyngeal to form the __ plexus & supply glands & BV of MIDDLE ear
caroticotympanic
tympanic
MEDIAL internal carotid nerve forms the ___ plexus, located in the cavernous sinus alongside the __ __
cavernous
sella turcica
fibers from the medial internal carotid n. travel thru the __ ganglion to reach the eyeball & supply the ciliaris, dilator pupillae & __ muscles of upper eyelid
ciliary
tarsus
some medial internal carotid branches go to ___ nerves to BVs of its muscles, while the ___ supplies BV in superior oblique
oculomotor
trochlear
branches from medial internal carotid to the __ division of the trigem n. supply arrector pili, sweatglands and BV in its field of distrib
-pituitary gland also innervated
ophthalmic
branches accompanying the __ __ artery are from the MIDDLE cervical ganglion, and will supply the thyroid gland
inferior thyroid
branches from the INF cervical/stellate ganglion reach the ___ artery to the UE via the __ & brachial arteries
subclavian
axillary
____ branches come from the SUP cervical ganglion and form the pharyngeal plexus along w/ fibers from the glossopharyngeal & vagus nerves & ___plexus
-each plexus supplies BV & glands
laryngopharyngeal
laryngeal
___ branches come from each cervical ganglia, and accompany branches of the vagus thru the cardiac plexus to the ___ ___
-symp stim: increased HR, dilate coronary a.
cardiac
sinoatrial node
the GRC associated w/ ea. thoracic nerve AND lumbar nerve AND sacral & coccygeal nerve supplies these 3 things in the field of distrib of ea. nerve
arrector pili
sweat glands
BV
off the thoracic sympathetic trunk, ganglia __-__ send POSTganglionic fibers to the thoracic aorta
1-5
cardiac branches extend to the heart from the thoracic symp ganglia from the __-__ ganglia and pass thru the __ plexus
t2-t4
cardiac
pulmonary branches come from __-__ ganglia and travel thru the __ plexus to supply pleura, smooth musc and BV of lungs & bronchial glands
t2-t4
pulmonary
for asthmatics, ___ mimic symp stim & dilate bronchi and decrease mucus production, allowing for easier breathing
inhalers
