Phys II Midterm

Question 1

Responsible for most of spinal cord integrative function

Answer 1

Interneurons

Question 2

Excite nuclear bad intrafusal fibers

Answer 2

Gamma-dynamic

Question 3

Endolymph is found in the scala media

Answer 3

True

Question 4

Afferent fibers in golgi tendon

Answer 4

Ib

Question 5

T or F Helicotrema where hair cells become smallest?

Answer 5

False

Question 6

Order of sound entering ear

Answer 6

Tympanic membrane-maleus-incus-stapes-oval window

Question 7

Renshaw cells

Answer 7

Lateral inhibition

Question 8

Separates scala media from scala vestibuli

Answer 8

Reissner’s membrane (vestibular membrane)

Question 9

T or F When you age …. 1000 decibels

Answer 9

False

Question 10

Where does crossing over occur between the right and left pathways?

Answer 10

Trapezoid body of medulla

Question 11

How a person determines the direction from which sound comes

Answer 11

Auditory association cortex

Question 12

Question about reflex

Answer 12

Answer had extension (believe it was quadriceps and excitatory out of choices)

Question 13

Tectorial membrane sits between

Answer 13

Scala vestibuli/scala media

Question 14

Hair cells bent…secrete…

Answer 14

K+

Question 15

Impedence matching due to

Answer 15

Difference in size between …. and round window

Question 16

Which of the below is NOT part of the Analgesia system

Answer 16

Nucleus Ruber

Question 17

Location for control functions for muscle movements of the axial body, neck, shoulders and hips

Answer 17

Vermis

Question 18

T or F The cerebellum is not required for locomotion

Answer 18

True

Question 19

Associated with vestibular system

Answer 19

Flocculonodular lobe

Question 20

Muscle movement

Answer 20

Dorsal spinocerebellar

Question 21

Axons form climbing fibers

Answer 21

Neurons project from inferior olivary nuclei

Question 22

Involved in coordination of skilled movements and speech

Answer 22

Cerebrocerebellum

Question 23

Which one of these is NOT a function of spinocerebellar

Answer 23

Plans as much as tenths of a second in advance of actual movements: Referred to as “motor imagery”

Question 24

Axons from parallel fibers in cortex

Answer 24

Granular cells

Question 25

ONLY output from cortex

Answer 25

Purkinje cells

Question 26

Neurotransmitter that is always inhibitory

Answer 26

GABA

Question 27

Which one of these statements is incorrect

Answer 27

Parkinson’s disease

Question 28

All of the following except…

Answer 28

Thalamus

Question 29

Putamen

Answer 29

Subconscious execution of learned patterns of movement

Lesions - results in flicking movements hand, face = chorea

Question 30

Globus Pallidus

Answer 30

Part of basal nuclei, motor activity

Lesions - spontaneous writhing movements of a hand, arm neck or face = athetosis

Question 31

Pontine Nucleus

Answer 31

Pontine reticular nuclei
Excite antigravity (axial) muscles
Fibers make up the pontine reticulospinal tract

Question 32

Reticular Nuclei

Answer 32

Medullary reticullar nuclei
Relax antigravity muscles
Fibers make up the medullary reticulospinal tract

Question 33

Subthalmic nucleus

Answer 33

Couldn’t find lots of info

Part of basal nuclei

Question 34

Fastglial Nucleus

Answer 34

Fibers project to reticular formation and vestibular nuclei
Related to posture and limb movements (without won’t be able to stand upright)
Lesion - trunk ataxia

Question 35

Putamen Circuit

Answer 35

Cerebral cortex –> Putamen –> Globus pallidus –> Thalamic relay nuclei –> Primary motor cortex
(Bypasses caudate nucleus)