301 week 2 ch.7

The ____ lobe is associated with vision.

occipital

When a neuron is stimulated, ions move across the membrane, creating a current that, if large enough, will briefly change the area inside of the neuron to be more positive than the outside area. This state is known as:

action potential

Which of the following is not found in all nerve cells?

mitochondrion

The peripheral nervous system (PNS) includes _________of cranial nerves that connect the brain directly to the sense organs (eye, ear, tongue, nose, and skin), the heart, the lungs, and other internal organs.

12 pairs

All nerve cells have a nucleus, cytoplasm, and a cell membrane. Scattered throughout the cytoplasm are little, microscopic granular "dots" called:

Nissl bodies.

A disease condition called _________ results from the effects of the bacterium Clostridium tetani on the nervous and muscular systems.

​tetanus

Which part of the brain is the reflex center for chewing, tasting, and secreting saliva?

pons

What is the most common first symptom of Tourette syndrome?

facial tic

Sciatica is most common in:

middle-aged males.

Which of the following is not a form of meningitis?

parasitic

Migraines are a form of ____ headache.

vascular

Encephalitis:

causes nerve cell destruction.

Which of these conditions is the most common form of dementia?

Alzheimer's disease

A(n) _________ is the minute space between the axon of one neuron and the dendrites of the next neuron across which an impulse must travel.

synapse

Which of these is not associated with essential tremor?

hands shaking when at rest

The pia mater, arachnoid, and dura mater make up the:

meninges.

What are the two divisions of the autonomic nervous system?

sympathetic and parasympathetic

Paralyses are divided into what two general groups?

spastic and flaccid

When is multiple sclerosis (MS) usually first diagnosed?

between the ages of 20 and 40

Which of these statements is correct?

Quadriplegia is a permanent form of paralysis.

​The peripheral system also includes ______ pairs of spinal nerves.

31 pairs

Nerve impulses normally travel about ____ miles per hour.

200

The main symptoms of Parkinson's disease are:

muscle rigidity and tremor of the hand.

Damage to the right side of the brain causes paralysis in the ____ of the body.

left side

Which form of imaging has been most useful with evaluating and staging malignancies?

The positron emission tomography (PET) scan