Neurophysio (REVIEW TEST) Flashcards Preview

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Flashcards in Neurophysio (REVIEW TEST) Deck (36)
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1

Autonomic receptor that is blocked by hexamethonium at the ganglia but not at the NMJ

Cholinergic nicotinic receptors

2

66 y/o man with chronic hypertension is treated with prazosin by his physician. the treatment successfullt decreases his BP to whithin normal range. what is the MOA?

inhibition of alpha 1 receptors on vascular smooth muscle

3

Response mediated by parasymptathetic muscarinic receptors

Erection

4

Property of C fibers

have the slowest conduction velocity of ant nerve fiber type

5

When compared with the cones of the retina, the rods

more sensitive to low intensity light

6

Basilar membrane of the organ of corti

Apex responds better to low frequencies than the base

7

feature of the sympathetic but not the parasympathetic

Preganglionic neurons originate in the thoracolumbar spinal cord

8

Autonomic receptor mediates an increase in heart rate

Adrenergic B1 receptors

9

Cutting this structure on the left side causes total blindness of the left eye

optic nerve

10

Reflex responsible for monosynaptic excitation of ipsilateral homonymous muscle

myotactic/strecth reflex

11

type of cell in the visual cortex responds best to a moving bar of light

complex

12

administration of which of the ff drugs is contraindicated in a 10 y/o child with a history of asthma

propanolol

13

adrenergic receptor produces stimulatory effects by the formation of inositol 1,4,5 triphosphate (IP3) and an increase in intracellular calcium

alpha 1 receptors

14

the excessive muscle tone produce in the decerebrate rigidity can be reversed by

cutting the dorsal roots

15

part of the body woth the largest representation on the motor cortex

fingers

16

Autonomic receptors mediates secretion of epinephrine by the adrenal medulla

cholinergic nicotic receptors

17

Cutting which structure on the right side causes blindness in the temporal field of the left eye and the nasal field of the right eye

Optic tract

18

a ballet dancer spins to the left. during the spin, her eyes snap quickly to the left. the fast eye movement is

nystagmus

19

solute with a much lower concentration in the CSF than in the cerebral capillary blood

sodium

20

autonomic drugs that stimulate adenylate cyclase

Norepinephrine

21

step in the photoreception in the rods

metrahodopsin II activats transducin

22

pathogens that produce fever cause

shivering

23

Olfactory system

receptor cells are neurons

24

lesion of the chorda tympani

impaired taste function

25

produce maximum excitation of the hair cells in the right horizontal semicircular canal

rotating the head to the right

26

The inability to perform rapidly alternating movements is associated with lesion of the

cerebellum

27

Autonomic receptor that is activated bu low concentrations of epinephrine released from the adrenal medulla ad causes vasodilation

Adrenergic B2 receptors

28

Complete transection of the spinal cord at the level of T1 would most likely result in

temporary loss of stretch reflexes below the lesion

29

sensory receptor potentials

graded in size, depending on stimulus intensity

30

Cutting which structure causes blindness in the temporal fields of the left and right eye

Optic chiasm