Motor innervation to the muscles of facial expression is via branches of the _______ nerve (C.N. ___)
Sensory innervation of the face is via branches of the ________ nerve (C.N. ___)
ophthalmic, maxillary, mandibular
The trigeminal nerve divides into three major branches before emerging in the face, what are they?
Nerve that distributes primarily to the face and scalp
Nerve that distributes primarily to the cheek and the area lateral to the orbit
Nerve that distributes primarily to the chin and temporal region
supraorbital, supratrochlear, external nasal, infratrochlear, lacrimal
List the 5 nerve branches of the ophthalmic nerve.
zygomaticotemporal, zygomaticofacial, infraorbital
List the 3 nerve branches of the maxillary nerve.
auriculotemporal, buccal, mental
List the 3 nerve branches of the mandibular nerve.
Most frequently injured nerve with blows to the face; frequently injured nerve for boxers...
Trigeminal Neuralgia (Tic Doloureaux)
a condition characterized by sudden attacks of severe pain occurring in an area of sensory distribution of the trigeminal nerve; hypersensitivity of nerve often due to touch; occurs most common in maxillary division
Which trigeminal division is Trigeminal Neuralgia (Tic Doloureaux) most likely to occur? Least likely?
dorsal primary rami, 2, 4
The sensory innervation of the posterior aspect of the neck and scalp is from the ___________ of cervical nerves ___ to ___
Greater Occipital Nerve
Supplies the occipital region
Occipitalis Tertius (Third Occipital Nerve)
Supplies the upper part of the back of the neck
Dorsal Primary Ramus of C4
Supplies the lower part of the back of the neck
Ventral Primary Rami, 2, 4
The sensory innervation of the anterior and lateral aspect of the neck is from the __________ of cervical nerves ___ to ___
Formed by the ventral primary rami of C1, C2, C3, and C4
Lesser Occipital Nerve (C2)
supplies the lateral part of the occipital region, posterior to the ear
Great Auricular Nerve (C2, C3)
supplies the angle of the mandible, and the area inferior to the ear. It accompanies the external jugular vein.
External jugular vein
What vein does the great auricular nerve accompany?
Transverse Cervical Nerve (C2, C3)
supplies the anterior surface of the neck (the throat)
Supraclavicular Nerve (C3, C4)
supplies the lateral surface of the neck
medial, intermediate, lateral
The three subdivisions of the Supraclavicular Nerve are called the ________, ________, and ________ Supraclavicular Nerves
The cervical plexus carries motor fibers to the infrahyoid (strap) muscles. These motor fibers arise from a loop called the __________
Superior Root (descendens hypoglossi), Inferior Root (descendens cervicalis)
What are the two parts of the Ansa Cervicalis?
Superior Root (descendens hypoglossi)
portion of ansa cervicalis that descends from the hypoglossal nerve to join the inferior root; C1 or C1 and C2
Inferior Root (descendens cervicalis)
portion of ansa cervicalis that descends from cervical nerve branches to join the superior root; C2 and C3
sternohyoid, sternothyroid, omohyoid
What three infrahyoid muscles does the ansa cervicalis supply?
The fourth infrahyoid muscle, the __________, receives its innervation exclusively from C1 fibers through the __________ nerve
diaphragm, thorax, abdomen
The Phrenic Nerve is motor to the _________ and sensory to some of the membranes of the _________ and __________
C3, C4, C5
The Phrenic Nerve originates from which cervical nerves?
Can be found in the neck lying on the anterior surface of the anterior scalene muscle; it runs vertically down the muscle into the thorax