The Nervous System Overview

What does the nervous system control and integrate?

What is the structural and functional unit of the nervous system?

According to the number of processes (nerve fibers), what are the types of neurons? (Select all that apply)

What type of neuron carries impulses away from the Central nervous system?

What type of neuron carries impulses toward the CNS?

What is the function of interneurons?

What is a collection of cell bodies inside the CNS called?

What is a bundle of nerve fibers outside the CNS called?

What are the two anatomical divisions of the nervous system?

What are the two functional divisions of the nervous system?

What is the CNS protected by?

What are the three layers of meninges that cover the CNS?

What is the space between the pia mater and arachnoid mater called?

What are the two main components of the CNS structure?

What is the space between the arachnoid mater and dura mater called?

What is the space between the dura mater and the bone called?

The brain has lymph.

What are the three main parts of the brain stem?

The brain stem connects the spinal cord with higher centers in the cerebrum and cerebellum.

How many cranial nerves are attached to the brain stem?

The brain stem is the site of some vital centers, such as the respiratory center and the sleeping system.

The spinal cord is generally cylindrical in shape and about 45 cm in length.

Where does the spinal cord begin?

What are the two anterior horns of the spinal cord H shape containing?

The spinal cord is functionally divided into 31 segments.

Each segment of the spinal cord gives attachment to one pair of spinal nerves.

What are the two main parts of the peripheral nervous system (PNS)?

What are peripheral nerves composed of?

What are the three types of peripheral nerves? (Select all that apply)

What type of nerve fibers do motor nerves contain?

Most peripheral nerves are mixed.

Each spinal nerve is attached to the spinal cord on each side.

How many roots does each spinal nerve arise from?

What does the anterior (ventral) root of a spinal nerve carry?

What does the posterior (dorsal) root of a spinal nerve carry?

What is formed when the two roots of a spinal nerve unite?

Where does the nerve trunk exit?

What are the two main branches of the nerve trunk?

What type of fibers do both the ventral and dorsal rami contain?

What structures does the dorsal ramus supply?

All dorsal rami supply the skin.

T1-T12 & L1,2 ventral rami send white ramus communicans (preganglionic sympathetic fibers) to sympathetic ganglia.

Each ventral ramus receives gray ramus communicans (postganglionic sympathetic fibers) from sympathetic ganglia.

What does the cervical plexus communicate to form?

What does the brachial plexus communicate to form?

What do the ventral rami of T1-T12 run individually to form?

What does the lumbar plexus communicate to form?

What does the coccygeal plexus communicate to form?

All ventral rami share a plexus except for the thoracic ventral rami.

There are 12 cranial nerves on each side, numbered with Roman numerals.

The first and second cranial nerves attach to the cerebrum.

The third through twelfth cranial nerves attach to the brain stem.

What is the function of the olfactory nerve?

What is the function of the optic nerve?

The oculomotor nerve is considered a motor nerve.

The trochlear nerve is sensory only.

What is the function of the trigeminal nerve?

The abducens nerve controls the lateral rectus muscle of the eye.

The facial nerve is only a motor nerve.

What is the function of the vestibulocochlear nerve?

The glossopharyngeal nerve is purely sensory.

The vagus nerve is the most important parasympathetic nerve in the body.

The accessory nerve is responsible for all upper limb muscles.

The hypoglossal nerve is responsible for controlling all tongue muscles.