Quiz 2

Question 1

the inability to recognize an object or interpret sensory stimuli.

Answer 1

agnosia

Question 2

Which designator is used to represent the left ear (lobe or mastoid area) on a standard EEG electrode montage?

Answer 2

A1

Question 3

Febrile seizures are a definite early warning sign of the presence of epilepsy.

Answer 3

FALSE

Question 4

best describe the light reflex of the visual system when a bright light is directed into one eye?

Answer 4

the stimulation goes to the brainstem via CN II and then causes CN III to activate the pupillary constrictors in both eyes

Question 5

Main motor area located on the precentral gyrus with direct cortical control over motor neurons

Answer 5

Primary motor cortex

Question 6

aids in preparation for motor movements through facilitating specific sets of primary motor neuronstate specific sets of neurons

Answer 6

premotor area (PMA)

Question 7

facilitates coordination of complex movements and is not needed for simple repetitive tasks

Answer 7

supplemental motor area (SMA)

Question 8

A lesion to the cortex resulting in weakness of the extraocular eye muscles interrupting voluntary saccades but with intact ocular reflexes is an example of?

Answer 8

supranuclear opthalmoplegia

Question 9

best describe activities mediated by the parasympathetic nervous system?

Answer 9

Decreasing heart rate, increasing digestive activity and pupillary constriction.

Question 10

Which photoreceptors of the retina are responsible for color vision?

Answer 10

cons

Question 11

Why do most individuals exhibit a right ear advantage when listening to complex speech stimuli?

Answer 11

Because the right ear is most directly connected to the left brain which is the speech dominant hemisphere for most people

Question 12

All patients who have tinnitus in one or both ears are extremely debilitated by it and cannot work or enjoy daily activities due to the strong emotional and physiological responses they have to the sounds.

Answer 12

false

Question 13

The right visual field is represented in the visual cortex on the left side of the brain.

Answer 13

true

Question 14

accurately descibe the retinogeniculostriate pathway?

Answer 14

Visual information is picked up by rods and cones in the retina and sent along axons of CN II to the optic chiasm where some fibers decussate and enter either the left or right optic tract. These fibers synapse in the lateral geniculate nucleus of the thalamus. Fibers leaving the thalamus project through the internal capsule to become optic radiations to reach the primary visual cortex above and below the calcarine sulcus.

Question 15

Ballismus is a movement disorder characterized by

Answer 15

A “jumping about” movement where an arm or leg shows wild flailing movements

Question 16

Which of the following is NOT TRUE regarding neuronal regeneration?

A neurite sprouting from a damaged neuron will seek a favorable environment such as a Schwann tube to continue to regrow.

Neuronal regeneration is most likely to occur within the central nervous system tissues such as in the spinal cord.

A regenerating motor neuron may be attracted to increased acetylcholine receptors on a muscle to form a new myoneural junction.

Regeneration of a neuron is more likely to occur if the neuron is crushed or only has a few millimeters of gap rather than a large distance between the severed portions.

Answer 16

Neuronal regeneration is most likely to occur within the central nervous system tissues such as in the spinal cord.

Question 17

At the the site of an injury, damaged cells and nociceptors release many chemicals (e.g. K+, serotonin, substance P, bradykinin), and these chemicals cause

Answer 17

The dilation of arterioles, causing redness (flare) at the site of injury.

The leakage of plasma from venules, causing edema (swelling) at the site if injury.

The attraction of phagocytes to the area of the damage for cleaning away debris

Question 18

What is the name for the type of pain described by someone feeling pain in the chest wall or left arm when the stimulation is from the heart due to myocardial ischemia (a heart attack)?

Answer 18

referred pain

Question 19

What area in the eye creates the natural blind spot?

Answer 19

optic disk

Question 20

Which fluid in the eyeball is the jelly-like semifluid which is important for maintaining the round shape of the globe of the eyeball?

Answer 20

vitreous fluid

Question 21

If a patient has spontaneous nystagmus, why might you not see it when the patient comes to your office and you are taking their case history?

Answer 21

Because the ability to visually fixate on objects in a lighted room masks or controls the nystagmus

Question 22

Because the ability to visually fixate on objects in a lighted room masks or controls the nystagmus

Answer 22

A lesion impacting a portion (one half) of the optic radiations, specifically those going to the cuneus gyrus on one side

Question 23

Which description is accurate regarding the flow of blood?

Answer 23

Deoxygenated blood from the body returns to the heart through the superior and inferior vena cava

Question 24

How many pulmonary veins exist in the cardiovascular system?

Answer 24

4

Question 25

best describe the organization of the autonomic nervous system (ANS)?

Answer 25

The ANS involves a 2-neuron chain with the pre-ganglionic neuron from the lateral gray horn of the spinal cord (or some brainstem nuclei) and the post-ganglionic neuron with it’s cell body in the peripheral nervous system just outside the spinal cord