Sympathetic Trunk Flashcards
(20 cards)
Distinguish between afferent and efferent
Efferent= carry info OUT Afferent= carry info IN
T/F:
Motor fibres are afferents
False
They are efferent (carrying info out)
List some examples of ‘special sensation’
Smell Taste Vision Hearing Balance
Function of motor nerves?
Voluntary movement of skeletal muscle
What are the two general functions of the autonomic system?
secretomotor= secretion from glands Vasomotor= smooth muscle contraction in blood vessels, internal organs, erector pilli muscles etc
How many neurons are involved in the autonomic pathway?
2
T/F:
post ganglionic fibres are usually unmyelianted
True
Define what a ganglion is
Collection of nerve cell bodies outside the central nervous system
Where does the parasympathetic division arise from?
4 cranial nerves( occulomotor, facial, glossopharyngeal and vagus) and 2nd-4th sacral spinal nerves
T/F;
associated ganglion with occulomotor cranial nerve is pterygopalantine ganglion
False
associated ganglion is cillary ganglion
What are the two ganglia associated with the facial nerve?
Pterygopalantine
Submandibular
T/F:
Otic ganglion is associated with glossopharyngeal cranial nerve
True
What is the origin of sympathetic fibres?
Thoracic (T1-12) and upper lumbar (L1-2) spinal cord
T/F:
Sympathetic trunk extends from the coccyx to the cranial base
True
Pre-ganglionic fibres leave the spinal cord via mixed spinal nerves through ______ foramen.
Interverterbral
Name the three cervical ganglia
Cervicothoracic/stellate
Middle cervical
Superior cervical
What do rami communicans contain?
Pre-ganglionic sympathetic fibres FROM the spinal cord TO the sympathetic trunk
T/F:
Middle and superior cervical ganglia send branches which form plexuses on cervical blood vessels to provide sympathetic innervation to the NECK
False
it is the cervicothoracic and middle ganglia that supply the neck
T/F:
Sensory nerves are unipolar or less commonly bi polar
True
Where are the cell bodies of sensory nerves found?
Dorsal root ganglion or ganglia adjacent to the spinal cord/along cranial nerves