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CVM710: Anatomy > exam 4: sense organ of vision Adnexa (34) > Flashcards

exam 4: sense organ of vision Adnexa (34) Flashcards

1
Q

The organ of vision: The orbit is known as

A

Adnexa

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2
Q

Connects the zygomatic process of the frontal bone with the frontal process of the zygomatic bone

A

Orbital ligament

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3
Q

what is the black arrow pointing to

A

Orbital ligament

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4
Q

Muscle located dorsal in the orbit. Attaches within the superior eyelid structure.

Is the responsible to elevate the superior eyelid

A

Levator palpebrae superioris m

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5
Q

Levator palpebrae superioris m is innervated by what CN

A

Oculomotor nerve (CN III)

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6
Q

Levator palpebrae superioris m action

A

responsible to elevate the superior eyelid

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7
Q

Form the main muscular structure of
the eyelids.

Close the aperture between the eyelid or palpebral fissure (Rima palpebral) “Blink”

A

Orbicularis oculi m.

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8
Q

Orbicularis oculi m. is innervated by

A

branch of Facial nerve (CN VII)

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9
Q

Orbicularis oculi m. action

A

Close the aperture between the eyelid or palpebral fissure (Rima palpebral) “Blink”

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10
Q

Mucosa that covers the posterior surface of the eyelids

A

Palpebral conjunctiva

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11
Q

Glands located posterior to the orbicularis oculi m

A

Tarsal glands (Meibomian glands)

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12
Q

Tarsal glands produce an oiled substance (meibum), which coats the _________

A

tear film

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13
Q

what are the 2 functions of the Tarsal glands

A
  1. Prevent the evaporation of tears
    and from spilling onto the face
  2. Traps tears between the eyeball and the oiled edge of the eyelid, and makes the eyelids airtight when closed
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14
Q

identify the muscle

A

Levator palpebrae superioris m

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15
Q

Blind sac between the palpebral
and bulbar conjunctiva

there is a superior and inferior

A

Fornix

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16
Q

other name for Third eyelid

A

Nictitanting membrane

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17
Q

what is this

A

Third eyelid (Nictitanting membrane)

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18
Q
A
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19
Q

Covers the surface of the sclera

A

Bulbar Conjunctiva

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20
Q
A
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21
Q

Periorbita also called

A

Orbital fascia

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22
Q

Fascia that encapsule the extrinsic
muscles that moves the eye, periorbital adipose tissue, vessels and nerves

A

Periorbita (Orbital fascia)

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23
Q
A

Periorbita (Orbital fascia)

24
Q

what makes up the adnexa (4)

A
  • The eyelids and tunica conjunctiva
  • Periorbita (Orbital fascia)
  • The ocular muscles
  • The lacrimal apparatus
25
Q

identify 1 and 2

A
  1. Periorbita
  2. Zygomatic gland
26
Q

what muscle is the green box on

A

Masseter m.

27
Q

what is the blue arrow pointing to

A

Periorbita

28
Q

Parasympathetic ganglion where preganglionic fibers from facial nerve (VII) synapse

A

Pterygopalatine ganglion

29
Q

Pterygopalatine ganglion

parasympathetic or sympathetic?
what CN is it associated with

A

Parasympathetic ganglion where preganglionic fibers from facial nerve (VII) synapse

30
Q

hint 3 and 4: one is an artery and one is a nerve

A

1.Ophthalmic v.
2. Periorbita
3. Maxillary nerve (V2)
4. maxillary artery
5. Pterygopalatine ganglion

31
Q

how many Extrinsic muscles of the eye are there

32
Q

identify 1-4

A

1.Dorsal rectus m.
2.Lateral rectus m.
3.Ventral rectus m
4.Medial rectus m

(whatever muscle contracts is which way the eye/pupil moves)

33
Q

identify 1 and 2

A
  1. Dorsal Oblique m.
  2. Ventral oblique m.
34
Q

Dorsal rectus m. is innervated by

A

oculomotor nerve CN III

35
Q

Ventral rectus m. is innervated by

A

oculomotor nerve CN III

36
Q

identify the muscle being used

A

Dorsal rectus m (DR)

both are being contracted

37
Q

identify the muscle being used

A

Ventral rectus m. (VR)

38
Q

Medial rectus m is innervated by CN _______

A

oculomotor nerve CN III

39
Q

Lateral rectus m. is innervated by

A

abducens nerve CN VI

40
Q

identify the muscles being used

A

Left LR is contracted
RIght MR is contracted

41
Q

identify the muscles being used

42
Q

Dorsal oblique m. is innervated by

A

trochlear nerve CN IV

43
Q

Ventral oblique m. is Innervated by

A

oculomotor nerve CN III

44
Q

identify the muscles being used

45
Q

Muscle fibers located around the optic nerve.

This muscle retract the eyeball into the orbit as result of a reflect.

A

Retractor bulbi m.

46
Q

Retractor bulbi m. is innervated by what CN

A

innervated by abducens n. (CN VI)

47
Q

identify 1-4

A
  1. Dorsal Oblique tendon
  2. Retractor bulbi m.
  3. Optic nerve CN II
  4. Ventral Oblique m.
48
Q

identify 1-4

A
  1. Frontal n. Br of Ophthalmic n. V1
  2. R dorsal
  3. R lateral
  4. R ventral
49
Q

identify 1 and 2

A
  1. Opening of lacrimonasal duct
  2. Lacrimonasal duct
50
Q

identify 1-4

A

1.Lacrimal gland
2.Lacrimal puncta
3. Lacrimal sac
4.Lacrimal canaliculus

51
Q

What muscles and nerves are acting in each side ?

A

Right eye: Lateral Rectus using abducens nerve CN VI
Left eye: Medial Rectus CN III

52
Q

in carnivores is the orbit open or closed

53
Q

palpebral fissure (Rima palpebral) is located where

A

space between the 2 eyelids

54
Q

what is circled in green

A

zygomatic salivary gland

55
Q

Explain what nerve is damaged in the image

56
Q

Explain what nerve is damaged in the image

A

trochlear nerve CN IV

57
Q

Explain what nerve is damaged in the image

A

abducens nerve CN VI

CVM710: Anatomy (54 decks)

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