Sympathetic Trunk Flashcards
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
