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SPECIAL SENSE > [PHYSIO] POSTURE & EQUILIBRIUM > Flashcards

[PHYSIO] POSTURE & EQUILIBRIUM Flashcards

1
Q

Spinal reflexes (4)

A

Stretch reflex
Positive supporting reaction
Crossed extensor reflex
Stepping reflex

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2
Q

Medullary reflexes

A

Neck statotonic reflexes
Labyrinth statotonic reflexes

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3
Q

Midbrain reflexes

A

Labyrinth righting reflexes
Neck on body righting reflexes
Head on body righting reflexes
Body on body righting reflexes

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4
Q

Cortical reflexes

A

Visual righting reflexes
Placong reaction
Hopping reaction

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5
Q

Pathological causes of nystagmus

A

Neocerebellar lesion
Meniere’s disease
Retinal defect
Lesions in labyrinth/ vestibular pathway

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6
Q

Physiological causes of nystagmus

A

Rotatory
Optokinetic

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7
Q

Nervous pathways of vertigo

A

1.Vestibulo-cerebello-thalamo-cortical
2.Vestibulo-reticulo-thalamo-cortical

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8
Q

Nervous pathways of nystagmus

A

Vestibulo-ocular tract to III, IV, VI

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9
Q

Membrane potential of hair cells during rest

A

-60mV

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10
Q

Methods of stimulation of SCCs

A

Mechanical
Caloric
Electrical

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11
Q

Nervous connections of labyrinth

A

1.MLB= Vestibulo-ocular tract
2.Cortex
3.Cerebelleum= vestibulo-cerebellar
4. RF= vestibulo-reticular
5. SC= vestibulospinal &reticulospinal

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12
Q

Macula is maintains posture during

A

Linear acceleration

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13
Q

Crista is maintains posture during

A

Angular acceleration

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14
Q

Utricle responds to

A

Horizontal acceleration

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15
Q

Saccule responds to

A

Vertical acceleration

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16
Q

Postural reflexes of macula

A

Righting reflexes
Labyrinth statotonic reflexes

17
Q

Postural reflexes of crista

A

Vestibulo-ocular

18
Q

Macula responds to

A

Otolith displacement by gravity

19
Q

Crista responds to

A

Bending of cilia due to Cupulae deflection

20
Q

Receptors for equilibrium are present in

A

Proprioceptors= muscles, tendons
Visual=Rods & cones
Vestibular=non auditory labyrinth
Cutaneous

SPECIAL SENSE (12 decks)

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