Section 3: Peripheral Nervous System

______________________ are what make up the peripheral nervous system.

Cranial

__________ is another term for sensory.

Afferent

___________ is another term for motor.

Efferent

___________ nervous system is a voluntary somatic motor system that conducts impulses from the CNS to skeletal muscles.

Somatic

_____________ nervous system is an involuntary motor system that conducts impulses from the CNS to cardiac muscles, smooth muscles, and glands.

Autonomic 

I ________ is the cranial nerve that contains special sensory nerves of smell located on the frontal lobe.

Olfactory

II ________ is the special sensory nerves for vision.

Optic

III ___________  (motor) innervates four extrinsic eye muscles.

Oculomotor

IV ____________ (motor) innervates extrinsic eye muscle that hooks through a pulley-shaped ligament in the orbit. 

Trochlear 

V ___________ (motor) provides general sensory innervation to the face to activate chweing.

Trigeminal

VI ____________ (motor) innervates the muscle that abducts (turns laterally) the eye.

Abducens

VII _________ (motor) nerve innervates the muscles of facial expression and taste.

Facial

VIII ____________ (both) contains special sensory nerves of hearing and equilibrium.

Vestibulocochlear

IX ________________ (both) helps innervate the tongue and pharynx.

Glossopharyngeal

X ________ (both) wanders beyond the head into the thorax and abdomen to provide parasympathetic innervation. 

Vagus

XI _________ (motor) innervates the sternocleidomastoid and trapezius muscles..

Accessory

XII ___________ (motor) runs below the tongue and innervates most tongue muscles.

Hypoglossal

Cell bodies of sensory neurons whose fibers enter the spinal cord by the dorsal root are found in the __________________.

dorsal root ganglion

________ (anterior) root and ________ (posterior) root some together to form a spinal nerve.

Ventral; dorsal

A spinal nerve immediately branches into a small _____________________ and a larger ____________________.

ventral (anterior) ramus; dorsal (posterior) ramus

________ rami serves a much larger area of the body.

Ventral

_________ is a network of nerves.

Plexus

The four nerve plexuses of the body are…

Cervical, Brachial, Lumbar, and Sacral

____________ is the term used to describe an area of skin that is mainly supplied by one spinal nerve.

Dermatome

________ dermatome is located around the bellow button. 

T10

_____________ neurons and _____________ neurons are in the autonomic nervous system connected by synapse.

preganglionic; postganglionic

__________________________ is the location in which a preganglionic neuron synapses with postganglionic neurons in the ANS.

Peripheral autonomic ganglion

__________________ is where a spinal nerve exits the vertebral column.

Intervertebral foramen

Cell bodies of motor neurons whose fibers leave the spinal cord by the ventral root are found in the _________________.

ventral horn

________________ is innervated by dorsi rami of spinal nerves. 

True back muscles

How many pairs of cranial nerves?

12