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WEEK 2 Flashcards

1
Q

Structure passing through (traversing) the OLFACTORY FORAMEN

A

Olfactory nerves (CN1)

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2
Q

Structure passing through (traversing) the OPTIC CANAL

A

Optic nerve (CN2)

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3
Q

Structure passing through (traversing) the SUPERIOR ORBITAL FISSURE

A

Ophthalmic branch of trigeminal nerve
Aducens
Trochlear
Occulomoutor

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4
Q

Structure passing through (traversing) the PTERYGOMAXILLARY FISSURE

A

Terminal part of maxillary artery

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5
Q

Structure passing through (traversing) the INFERIOR ORBITAL FISSURE

A

Zygomatic branch of V2

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6
Q

Structure passing through (traversing) the FORAMEN ROTUNDUM

A

Maxillary division of trigeminal nerve

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7
Q

Structure passing through (traversing) the FORAMEN OVALE

A

Mandibular division of the trigeminal

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8
Q

Structure passing through (traversing) the FORAMEN SPINOSUM

A

Middle meningeal artery

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9
Q

Structure passing through (traversing) the JUGULAR FORAMEN

A

Glossopharyngeal nerve
Accessory nerve
Vagus nerve

Internal jugular vein

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10
Q

Structure passing through (traversing) the FORAMEN MAGNUM

A

Spinal cord
Vertebral arteries

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11
Q

Structure passing through (traversing) the HYPOGLOSSAL CANAL

A

Hypoglossal nerve

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12
Q

Structure passing through (traversing) the STYLOMASTOID FORAMEN

A

Facial nerve

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13
Q

Structure passing through (traversing) the CAROTID CANAL

A

Internal carotid artery

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14
Q

Oculi

A

Eye

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15
Q

Oris

A

Mouth

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16
Q

Anguli

A

Angle (of the mouth)

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17
Q

Labii

A

Lip

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18
Q

Labii superiorus

A

Upper lip

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19
Q

Labii inferiorus

A

Lower lip

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20
Q

Levator

21
Q

Depressor

22
Q

Orbiclaris

A

Circular —> acts as a sphincter

23
Q

4 orientation of fibres

A
  1. Circular
  2. Oblique
  3. Transverse
  4. Vertical
24
Q

All muscles of facial expression are innervated by the ____ nerve

A

Facial nerve

25
A muscle innervated by the temporal branch of the facial nerve would be _____
Frontalis
26
Muscles innervated by the zygomatic branch of the facial nerve would be ___
Orbicularis oculi Zygomaticus major Zygomaticus minor
27
Muscles innervated by the buccaneers branches of the facial nerve would be ____
Buccinator Levator anguli oris Orrbiclaris oris
28
Muscles inverted by the the marginal mandibular branch of the facial nerve would be ____
Orbicularis oris Depressor labii inferior Depressor anguli oris
29
The only muscle innervated by the cerviacl branch of the facial nerve is ____
Platysma
30
What leads to changes in facial expression
Muscles of facial expression are inserted into the skin causing localised movements of the overlaying skin
31
Characteristics of muscular tissue
1. Highly cellular - many muscle cells will come together to form one large functional unit 2. Vascularised - has a very rich blood supply 3. Contractile - can contract to cause movement
32
Identifying features of smooth muscle + example
- spindle shaped - no striations - nuclei in the middle - one colour - No gaps due to overlaying fibres - eg. Blood vessels / oesophagus
33
Identifying features of skeletal muscle + example
- flattened nucleus towards periphery of the cell (seen along the cell membrane) - striations - eg. Bicep / quadriceps
34
Identifying features of cardiac muscle + example
- striated - round nucleus - Intercalated discs - eg. Heart/ terminal part of pulmonary vein
35
Identifying features of cardiac muscle
- striated - round nucleus - Intercalated discs
36
What are intercalated discs
Specialised gap junctions at the point of branching
37
Function of intercalated discs
Provide points of anchorage for myofibrils and help with the rapid spread of stimuli form one cell to another
38
action + innervation of orbicularis oris
action --> acts as a sphincter for oral orifices closing mouth and lips innervation --> buccal and marginal mandibular branches
39
action + innervation of orbicularis oculi
action --> acts as a sphincter for the eyes, closing the eyelid innervation --> temporal and zygomatic branch
39
levator labii superioris - insertion - action - innervation
insertion --> upper lip action --> elevates upper lip innervation --> zygomatic and buccal branch
39
depressor labii inferioris - insertion - action - innervation
insertion --> lower lip action --> depresses lower lip innervation --> marginal mandibular branch
40
zygomaticus major - origin - insertion - action - innervation
origin --> zygomatic bone insertion --> angle of the mouth action --> elevates angle of the mouth innervation --> buccal + zygomatic branch
41
zygomaticus minor - origin - insertion - action - innervation
origin --> zygomatic bone insertion --> upper lip action --> elevates upper lip innervation --> buccal + zygomatic branch
42
levator anguli oris - insertion - action - innervation
insertion --> obicularis oris + angle of the mouth action --> elevates angle of the mouth innervation --> buccal + zygomatic branch
43
depressor anguli oris - insertion - action - innervation
insertion --> obicularis oris action --> depresses angle of the mouth innervation --> marginal mandibular branch
44
buccinator - origin - insertion - action - innervation
origin --> ptergoid mandibular raphae insertion --> orbicularis oris + upper and lower lip action --> compresses the cheeks, preventing food from accumulating in the vestibule of the mouth innervation --> buccal branch
45
action + innervation of occipitofrontalis
Action - occipitalis --> tightens the scalp - frontalis --> wrinkles the forehead and raises the eyebrows Innervation - occipitalis --> posterior auricular nerve - frontalis --> temporal branch
46
platysma - origin - insertion - action - innervation
origin --> Pectoral fascia/Fascia over pectoralis major/Fascia over deltoid insertion --> Inferior border of mandible/ skin of lower face/ merges with orbicularis oris through the risorius action --> Tenses skin of the anterolateral neck innervation--> cervical branch

DEN1DSB (15 decks)

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