chapter 8 nervous

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

depolarization

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 pairs are mismatched?

axons: send messages cell body: nucleus dendrites: receive messages (All are matched correctly.)

Damage to the hypoglossal nerve may result in the ________.

inability to speak

The brain and spinal cord comprise the

central nervous system

Which of the following parts of the brain is not matched correctly with its function?

cerebrum: adjusting blood pressure

Spinal nerves outnumber cranial nerves.

correct

Opening of voltage-gated sodium channels in the membrane of a neuron results in

depolariztion

Which of the following is the correct order of meninges from outside to in?

dura mater, arachnoid, pia mater

The arrival of an action potential at the end of an axon results in the ________.

release of a neurotransmitter from the axon terminal

Following an accident, J.J. realizes that he is unable to move his left leg. Which area of his brain is most likely affected?

right frontal lobe

Which of the following provides control over skeletal muscles?

somatic nervous system

It forms a continuous connection with the brain.

true regarding the spinal cord

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

vagus

Which type of information is processed by the cerebral lobe

vision

Which of the following structures is the most superficial?

dura matter

The entire spinal cord is divided into ________ segments.

31

1. Sodium enters the cell. 2. Cell is repolarized. 3. Voltage-gated sodium channels close as voltage-gated potassium channels open. 4. Cell is depolarized. 5. A stimulus arrives. 6. Potassium leaves the cell. 7. Voltage-gated sodium channels open

5 A stimulus arrives. 7, Voltage-gated sodium channels open 1, Sodium enters the cell. 4, Cell is depolarized. 3, Voltage-gated sodium channels close as voltage-gated potassium channels open. 6, Potassium leaves the cell. 2 Cell is repolarized.

"fight or flight" response

Sympathetic nervous system

located in the diencephalon

The third ventricle is located in the diencephalon

Convergence, which occurs when multiple neurons feed into a single neuron.

Which type of neuronal pool is depicted here and what is its function?

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

longitudinal fissure

carries __________ information __________ the spinal cord.

motor, from

cerebellum

adjusts voluntary and involuntary motor activities.( the small brain)

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

cerebellum

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

hippocampus