Somatic Nervous System

These motor (efferent) neurons convey neural impulses from the CNS (brain & spinal cord) to distant targets, such as muscles, organs, and glands.

These sensory (afferent) neurons convey neural impulses from sensory receptor (in skin, muscles, organs) to the CNS.

The nervous system can be divided into two parts based on ___ and ___ .

What are the structural subdivisions of the NS?

What are the functional subdivisions of NS?

What is the involuntary division of the NS?

What is the voluntary division of the NS?

What are two functions of the CNS?

What are the two body parts of the CNS?

What do cross-sections of the spinal cord reveal?

This particular type of matter is somewhat H-shaped. It consists of regions within the CNS with a high density of neuronal cell bodies.

This particular type of matter consists of nerve axon bundles (tracts), which travel to and from the brain.

How are gray matter regions divided?

What type of horns lie on the posterior side of gray matter?

What type of horns lie on the anterior side of gray matter?

This system consists of all neural tissues outside the CNS.

This division of the NS conducts impulses to or away from the CNS.

What is a ganglion (ganglia)?

What is a bundle of nerve axons in the PNS?

How are peripheral nerves classified?

How many pairs of cranial nerves are there?

What arises from the spinal cord?

How many pairs of spinal nerves are there? What are the different types?

How many spinal segments are throughout the length of the spinal cord?

How do spinal nerves arise from the spinal cord?

What do rootlets converge to form?

Dorsal and Ventral roots unit to form a ____ ____ .

Spinal nerves divide into two branches of these.

What type of nerves are spinal nerves and their branches (dorsal & ventral rami) considered?

Dorsal rami convey nerve fibers (axons) to/from what?

Ventral rami convey nerve fibers (axons) to/from what?

What are the types of peripheral nerves?

____ ____ ____ convey impulses from the CNS to skeletal (voluntary) muscles.

Are somatic motor nerves multipolar or pseudounipolar?

___ ____ ____ convey sensations from the body to the CNS.

What 3 types of sensations are experienced by somatic sensory nerves?

Are somatic sensory nerves multipolar or pseudounipolar?

Where do cell bodies of somatic motor nerves reside in?

The axons of the somatic motor nerves exit the spinal cord via the ___ ___ and ultimately innervate skeletal muscles.

Somatic sensory nerve axons project into the dorsal horn of the spinal cord via what root?

Where do the cell bodies of the somatic sensory nerves reside?

These ___ ____ nerves convey impulses from the CNS out to skeletal (voluntary) muscles, such as biceps.

These ___ ___ nerves convey sensations (pain, temp, touch, proprioception) from the body to the CNS.

What two types of neurons does the SNS or "voluntary" nervous system utilize?

What does the sensory portion of the SNS convey?

What does the motor portion of the SNS convey?

If I touched a warm iron, what nervous system is being used?

What does the Autonomic Nervous System innervate?

What parts of the body doesn't the somatic nervous system innervate?