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