A&P Unit 5 Test, Chapters 11; 12; 13

A(n) ________ is a printed record of the brain's electrical activity over period of time

Electroencephalogram

The layer of connective tissue that surrounds individual axons within a peripheral nerve is termed the

Endoneurium

________ line the brain ventricles and spinal canal

Ependymal Cells

The outermost connective-tissue covering the nerves is the

Epinereurium

________ provide information about external environment

Exteroceptors

The dural fold that projects into the longitudinal fissure between cerebral hemispheres is called the

Falx Cerebri

The ________ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament

Filum Terminale

Damage to ependymal cells would most likely affect the

Formation of cerebrospinal fluid

Neuron cell bodies in the PNS are clustered together in masses called

Ganglia

Regions of the CNS where neuron cell bodies dominate constitute the ________ matter.

Gray

Neurons that have several dendrites and a single axon are called

Multipolar

The most abundant class of neuron in the central nervous system is

Multipolar

The white matter of the spinal cord is mainly

Myelinated Axons

The basic functional unit of the nervous system is the

Neuron

Clusters of RER and freeribosomes in the neurons are called

Nissl Bodies

The posterior horns of the spinal cord contain mainly

Sensory nuclei

There are ________ pairs of cranial nerves

12

The spinal cord consists of five regions and ________ segments

31

Neurons that have one axon and one dendrite, with the soma in between, are called

Bipolar

The posterior root ganglia mainly contain

Cell bodies of sensory neurons

The ________ nervous system is composed of the brain and spinal cord

Central

Main divisions of the adult brain

Cerebrum; Diencephalon; Midbrain; Pons

________ is the term used to describe the crossing over of a tract to the side of the nervous system opposite to where the axons orignate

Decussation

In a ________ neuronal pool, one neuron synapses on several postsynaptic neurons.

Diverging

The subdural space lies between the

Dura Mater and Arachnoid Mater

The tough, fibrous, outermost covering of the spinal cord is the

Dura mater

________ monitor the digestive, respiratory, cardiovascular, urinary, and reproductive systems

Interoceptors

In an adult, the conus medullaris is found at about

L1

Male brains are typically ________ compared to female brains.

Larger

A viral disease that destroys the neuronal cell bodies of the anterior gray horn will

Lead to muscle weakness or paralysis

The ________ nerve, which arises in the cervical plexus, innervates the diaphragm

Phrenic

What structure is covered by many blood vessels and adheres tightly to the surface of the brain

Pia Mater

The layer of the meninges in direct contact with the spinal cord is the

Pia mater

A(n) ________ reflex has at least one inter-neuron placed between the sensory and motor neurons

Polysynaptic

The ________ of each spinal nerve innervates the skin and muscles of the back

Posterior Ramus

Function of the thalamus

Processes sensory information and relays it to the cerebrum

________ monitor the position of skeletal muscles and joints

Propioceptors

In ________, axon collaterals extend back toward the source of the impulse and further stimulate the earlier neurons.

Reverberation

In the condition ________, a virus infects posterior root ganglia, causing a painful rash whose distribution corresponds to that of the affected sensory nerves as seen in their dermatomes

Shingles

Compared to the vertebral column, the spinal cord is

Shorter

The anterior horns of the spinal cord contain mainly

Somatic motor nuclei

The specialized membranes that surround the spinal cord are termed the

Spinal Meninges

Cerebrospinal fluid flows within the

Subarachnoid space

The site of intercellular communication between neurons is the

Synapse

The Roman numeral V indicates the ________ nerve

Trigeminal

Sensory neurons of the PNS are

Unipolar

Absorption at the arachnoid granulations returns CSF to the

Venous Circulation

________ are chambers within the brain that contain cerebrospinal fluid

Ventricles

The Roman Numeral VIII indicates the ________ nerve

Vestibulocochlear

Regions of the CNS with an abundance of myelinated axons constitute the ________ matter.

White