Chp. 8-9 Nervous System II

What are the 3 layers of meninges in order from outer to inner layers?

Dura matter, arachnoid matter, pia matter

What are the two divisions of the PNS?

Somatic and autonomic nervous systems

What are the two divisions of the autonomic nervous system?

Sympathetic and parasympathetic systems

What is the deepest layer of the meninges?

Pia matter

What is CSF?

Cerebrospinal fluid

What is in the subarachnoid space?

CSF

What is the function of cerebrospinal fluid?

Cushions CNS and supplies nutrients.

Where does the spinal cord extend or how far down the spine does it extend to?

From the the foramen magnum to the cauda equia (2nd lumbar vertebrae).

There __ pairs of spinal nerves.

31

There _ layers of meninges.

3

In the spinal cord, white matter is on the _____ and gray matter is on the ______.

Outside; inside

In the brain, white matter is on the _____ and gray matter is on the ______.

Inside; outside

Where is the epidural space in relation to the dura matter?

Above or on top of the dura matter

What is the composition of gray matter?

Collections of dendrites and cell bodies

What is the composition of white matter?

Myelinated anons

The anterior horns of the spinal cord are involved in ____ functions.

Motor

The posterior horns of the spinal cord are involved in ______ functions.

Sensory

The central canal of the spinal cord contain CSF. (T or F)

True

What is the composition of dorsal root ganglion?

A collection of cell bodies of sensory neurons.

Dorsal root ganglion is made up of a collection of ____ ______ of sensory neurons.

Cell bodies

Define an ascending tract in the white matter of the spinal cord.

Axons that conduct action potential TOWARD the brain.

Define a descending tract in the white matter of the spinal cord.

Axons that conduct action potential AWAY from the brain.

What are the two cell types that make up nervous tissue?

Neurons and neuroglia

What is the function of a sensory neuron?

To send input (stimulus) to CNS

What is the function of an interneuron?

To process input

What is the function of a motor neuron?

To send action and response from CNS to effector.

What is the function of the corpus callosum?

The connect the two hemispheres of the brain

What does the longitudinal fissure do?

Separates the two brain hemispheres

What is the function of gyri and sulci?

To increase surface area of the brain

Is sulci the groove or raised portion of the brain?

The groove

What are the components of the diencephalon?

Hypothalamus and thalamus

What the components of the brainstem?

Medulla oblongata, pons, midbrain

The somatic nervous system controls ________ _______.

skeletal muscles

What is the location where a spinal block and spinal tap occur?

subarachnoid space

What is the function of the temporal lobe?

To process and control hearing and smell

What is the function of the frontal lobe?

Controls voluntary motor functions, aggression, mood, speech, and judgment.

Which lobe controls vision?

Occipital lobe

What brainstem structure controls breathing and salivation?

Pons

What are the brainstem structures in order from superior to inferior?

Midbrain, pons, medulla oblongata

What is the function of the midbrain?

Control visual reflexes

What is the function of the thalamus?

Sort data and involved in memory

What does the autonomic nervous system consist of or control?

Smooth and cardiac muscles

What division controls ‘rest and digest’?

Parasympathetic nervous systemW

What division of the ANS controls ‘fight or flight’?

Sympathetic nervous system