______ nerves have sensory and motor fibers and are the most common
Mixed
______ cranial nerves carry parasympathetic fibers that serve muscles and glands
4
___ pairs of cranial nerves arise from the brain
12
Cranial Nerve VII: Facial
Mixed nerve with five major branches
Motor functions include facial expression, and the transmittal of autonomic impulses to lacrimal and salivary glands
Sensory function is taste from the anterior two-thirds of the tongue
Simple Receptors: Unencapsulated (facts)
Are everywhere
very abundant in epithelia and connective tissues
free dendritic nerve endings respond chiefly to **temperature and pain**
The receptor must have _______ for the stimulus energy
specificity
Proprioceptors
Respond to degree of stretch of the organs they occupy
Found in skeletal muscles, tendons, joints, ligaments, and connective tissue coverings of bones and muscles
Constantly “advise” the brain of one’s movements
Dermatomes
area of skin innervated by the cutaneous branches of a single spinal nerve
All spinal nerves except C1 participate in dermatomes
Cranial Nerve IX: Glossopharyngeal
Motor – innervates part of the tongue and pharynx, and provides motor fibers to the parotid salivary gland
Sensory – fibers conduct taste and general sensory impulses from the tongue and pharynx
List 4 types of mixed nerves
Somatic afferent and somatic efferent
Visceral afferent and visceral efferent
