nervous system test

cranial nerves

12 pairs

spinal nerves

31 pairs

in the midbrain, pons, and medulla oblongata are housed in the...

brain stem

which of the following is one of the major functions of the pons

breathing

what are the two main functional subdivisions of the nervous system

central and peripheral

what cells form the myelin sheaths around nerve fibers in the PNS?

Schwann cells

the part of the neuron that typically conducts nerve impulses away from the cell body is the ____

axon

white matter

collections of myelinated fibers (tracts)

the thalamus, hypothalamus, and epithalamus collectively constitute the...

diancephalon

motor

efferent

what type of neuron connects sensory and motor neurons in neutral pathways?

efferent neurons

an influx of potassium starts the process of depolarization

false

the myelin sheath insulates the axon and to slow the speed of impulse transmission

false

the nerve impulse travels directly and without pause through one neuron into another

false

A stroke in the primary motor area has caused Don to lose control over his skeletal muscles on the right side of his body. What lobe of his brain was damaged?

frontal lobe

collections of cell bodies on the PNS

ganglia

control of temperature, endocrine activity, metabolism, and thirst are functions associated with the...

hypothalamus

which of the following indicates damage to the primary motor area?

inability to voluntarily move skeletal muscles

the hypothalamus is the "emotional-visceral" center of the brain and, thus, is an important part of the...

limbic system

the vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the...

medulla oblongata

gray matter

mostly unmyelinated fibers and cell bodies

Mr. Warren has spinal cord damage that prevents nerve impulses from being carried from the CNS to muscles or glands. What specific type of neuron has been damaged?

motor neuron

bundles of nerve fibers in the PNS

nerves

clusters of cell bodies in the CNS

nuclei

in which cerebral lobe is the primary somatic sensory cortex located?

parietal

the hypothalamus regulates the...

pituitary gland

neurons at rest have ____ inside while keeping ______ outside the membrane.

potassium; sodium

sensory receptors located in muscles and tendons are termed...

proprioceptors

in the motor divisions of the peripheral nervous system, the ____ is voluntry and the __ nervous system is involuntary

somatic; autonomic

which of the following are part of the CNS?

spinal cord; brain

what portion of the diencephalon acts as a relay station for sensory impulses impulses traveling upward to the sensory cortex?

thalamus

bundles of nerve fibers in the CNS

tracts

calcium and neurotransmitters enable the transmission of the nerve impulse from one neuron to another.

true

the internal enviornment of a neuron at rest is slightly negative

true

myelinated fibers (tracts) form______ matter while unmyelinated fibers form _______.

white; gray

Sally has a brain injury; she knows what she wants to say but can't vocalize the words. The part of her brain that deals with the ability to say words properly is the...

Broa's area

sensory

afferent