lecture 5 - head & neck 5 Flashcards

1
Q

Which bones form the orbit?

A

lesser wing of sphenoid, frontal bone, ethmoid bone, maxilla, lacrimal bone, zygomatic bone

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2
Q

Where is the apex of the orbit?

A

At the optic canal

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3
Q

What is the anatomical term for eyelids?

A

Palpebrae

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4
Q

What covers the internal surface of the palpebrae?

A

Conjuctiva

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5
Q

How are tears drained from the eye to the nasal cavity?

A

collected by puncta, lacrimal canaliculi, lacrimal sac, nasolacrimal duct to nasal cavity

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6
Q

What are the fibrous tissue bands that strengthen the palpebrae?

A

Tarsal plates

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7
Q

How are the palpebrae joined to the lateral and medial margins of the orbit?

A

Via medial and lateral palpebral ligaments

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8
Q

What nerve gives parasympathetic supply to the lacrimal gland for secretion?

A

Greater petrosal nerve (CNVII), which runs with the lacrimal nerve

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9
Q

Which muscle elevates the upper eyelid?

A

Levator palpebrae superioris

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10
Q

Where is the common attachment of the rectus muscles?

A

The tendinous ring in the apex of the orbit

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11
Q

Which muscle passes through the trochlea before attaching to the eye?

A

Superior oblique

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12
Q

Which muscles allow for upwards movement of the eye?

A

superior rectus, inferior oblique

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13
Q

Which muscles allow for upwards and inwards movement of the eye?

A

superior rectus

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14
Q

Which muscles allow for upwards and outwards movement of the eye?

A

inferior oblique

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15
Q

Which muscles allow for downwards movement of the eye?

A

inferior rectus, superior oblique

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16
Q

Which muscles allow for downwards and inwards movement of the eye?

A

inferior rectus

17
Q

Which muscles allow for downwards and outwards movement of the eye?

A

superior oblique

18
Q

Which muscles allow for inwards movement of the eye?

A

medial rectus

19
Q

Which muscles allow for outwards movement of the eye?

A

lateral rectus

20
Q

Which nerves in the orbit dilate the pupils?

A

Long ciliary nerves

21
Q

What is the function of the cliliary ganglion?

A

relay station for parasympathetic fibres of the oculomotor nerve

22
Q

Which nerve supplies sensation to the auricle?

A

V3 (auriculotemporal nerve)

23
Q

Which bone surrounds the internal structures of the ear?

A

Petrous temporal bone

24
Q

What is the anatomical name for ear wax?

A

Cerumen

25
Q

Which glands secrete ear wax?

A

Ceruminous and sebaceous glands in the external ear

26
Q

What is the collective name for the bones of the inner ear?

A

ossicles

27
Q

What are the names for the 3 ossicles?

A

Malleus, incus, stapes

28
Q

Where does the footplate of stapes communicate with?

A

The oval window

29
Q

What are the 2 muscles of the middle ear?

A

Tensor tympani, stapedius

30
Q

What nerve supplies tensor tympani?

A

V3 / mandibular nerve

31
Q

What nerve supplies stapedius?

A

facial nerve / VII

32
Q

What is the function of stapedius muscle?

A

Dampens excessive movement from loud noises

33
Q

What is the bony labyrinth?

A

A very dense part of the petrous temporal bone which contains the vestibule