A&P Chapter 8

Which of the following cells cover every axon outside the CNS?

Schwann cells

List the three meninges in order, from the outermost to the innermost layer.

Dura mater, arachnoid, and pia mater

Which CSF-producing cells line both the central canal of the spinal cord and the ventricles of the brain?

Ependymal cells

What do ependymal cells do?

Ependymal cells line the central canal and ventricles of the brain and produce cerebrospinal fluid (CSF).

Which of the following is NOT an effect of activation of the sympathetic division?

constriction of the pupils

A shift of positively charged ions into the cell is called __________.

depolarization

Which gives the correct order of meninges from outside to inside?

dura mater, arachnoid, pia mater

Cerebrospinal fluid (CSF) is found in the ____.

efferent division of the PNS

The two cerebral hemispheres are separated by which of the following?

longitudinal fissure

Which of the following provides control over skeletal muscles?

somatic nervous system

Cerebrospinal fluid (CSF) is found in the ____.

subarachnoid space

How many pairs of spinal nerves are there in each vertebral level?

8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal

Where does an action potential in a neuron begin?

At the axon hillock

Which nervous system division is also called the "visceral motor system"?

Autonomic nervous system

Which of the following controls involuntary regulation of glandular secretions?

Autonomic nervous system

Which of the following events causes the depolarization of the post-synaptic membrane at a cholinergic synapse?

Binding of ACh to sodium channels

How does a neurotransmitter move across the synaptic cleft?

By diffusion

Which neuronal pool occurs when information spreads from one neuron to several neurons?

Divergence

Which of the meninges of the brain consists of two fibrous layers?

Dura mater

Which cells are responsible for the distribution of sensory information and the coordination of motor activity within the CNS?

Interneurons

Which is the most common type of neuron in the CNS?

Multipolar neurons

Which meningeal layer is bound firmly to the underlying neural tissue?

Pia mater

Sensory nuclei are found in which of the following parts of the spinal cord?

Posterior gray horn

Which of the following systems provides control over skeletal muscle contractions?

Somatic nervous system (SNS)

Which of the following synapse structures contains neurotransmitters?

Synaptic vesicles

Nissl bodies are __________.

clusters of rough ER and free ribosomes

In which type of cell are the dendrites and axon continuous, with the cell body lying off to one side?

Unipolar neurons

Which of the following spinal cord structures contain the axons of CNS motor neurons that control muscles and glands?

Ventral roots

Action potentials are generated by the opening and closing of which of the following channels?

Voltage-gated sodium and potassium channels

Which of the following is NOT a neurotransmitter?

acetylcholinesterase

Cardiac muscle is an effector of the __________.

autonomic nervous system

Which of the following is an automatic processing center that controls balance and fine-tuning of learned movements?

cerebellum

The central canal of the spinal cord is filled with ____________.

cerebrospinal fluid

Which nucleus or portion of the brain is important in learning and in the storage of long-term memories?

hippocampus

The membrane potential of an unstimulated cell is known as its ___________.

resting membrane potential

An action potential jumps from node to node in ___________.

saltatory propagation

Which of the following is cranial nerve (CN) X?

vagus