Eyes Flashcards

1
Q

Abducted and Depressed

A

Medial Rectus
Superior Rectus
Inferior rectus
Inferior Oblique

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2
Q

Action of Medical Rectus

A

Adduction

CN III

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3
Q

Extorted

A

Superior Oblique

CN IV

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4
Q

Adducted

A

Lateral Rectus

CN VI

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5
Q

Action of Superior Rectus

A

Upward and Medially

CN III

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6
Q

Action of Inferior Rectus

A

Downward and Medially

CN III

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7
Q

Action of Inferior Oblique

A

Upward and Laterally

CN III

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8
Q

Action of Superior Oblique

A

Downward and Laterally

CN IV

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9
Q

Action of Lateral Rectus

A

Abduction

CN VI

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10
Q

Loss of CN 3 will lead to

A

Abduction and Depression of Eyes

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11
Q

Loss of Levator Palpebrae Superioris will lead to

A

Ptosis

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12
Q

Mydriasis is caused by loss of

A

Sphincter papillae and ciliary muscle

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13
Q

Location of CN 3 nucleus and nerve

A

ventral part of the periaqueductal gray of the midbrain at the level of SUPERIOR COLLICULUS

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14
Q

What CN is damaged in Internal Strabismus?

A

Abducens

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15
Q

Location of CN 4 nucleus and nerve

A

ventral part of the periaqueductal gray of the midbrain at the level of INFERIOR COLLICULUS

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16
Q

Location of CN 6 nucleus and nerve

A

beneath FACIAL coliculus in the floor of the 4th ventricle in the caudal pons

17
Q

What causes esotropia?

A

Medial Deviation and paralysis of CN 6

18
Q

Lesion at Right optic nerve

A

Blindness of Right eye

19
Q

Lesion at Optic Chiasm

A

Bitemporal Hemianopsia

20
Q

Lesion at Right angle of chiasm

A

Right Nasal Heimanopsia

21
Q

Lesion at Right optic tract

A

Left Homonymous Hemianopsia

22
Q

Development of Anterior Pituitary Gland

A

Hypophysial Pouch/ Rathke

Upgrowth from ROOF of primitive mouth

23
Q

Development of Posterio Pituitary Gland

A

Neurohypophysial bud

Downgrowth from the fore brain