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anatomy > week 11 > Flashcards

week 11 Flashcards

1
Q

bones of the skull

A

8 crainial bones
14 facial bones

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2
Q

Temporomandibular joint classification

A
  • synovial, biaxial, condylar
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3
Q

Temporomandibular joint articular surfaces

A
  • mandibular fossa of temporal bone
  • condyle of mandible
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4
Q

Temporomandibular joint articular disc functions

A
  • improve articular fit
  • divides the cavity into an upper and a lower
    compartment
  • different movements in each compartment –
    roll in the lower compartment, slide in the
    upper compartment
  • provide attachment site for lateral pterygoid
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5
Q

lateral ligament of Temporomandibular joint

A
  • from zygomatic bone,
    passes down and back to
    neck of mandible
  • limits retraction and
    depression
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6
Q

stylomandibular ligament

A
  • from styloid process of the
    temporal bone, passes down and
    forward to angle of mandible
  • limits protraction and depression
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7
Q

sphenomandibular ligament

A
  • from sphenoid bone, passes down and forward to medial surface of the ramus of the mandible
  • limits depression and protraction
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8
Q

Muscles of mastication

A
  • masseter
  • temporalis
  • medial pterygoid
  • lateral pterygoid
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9
Q

Muscles of Facial Expression

A
  • Attach into the skin of the face
  • Open or close the apertures of the
    face (mouth, nostrils, eyes) create facial expressions
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10
Q

Hyoid bone

A
  • Framework to suspend the larynx (voice box)
  • Not attached to any other part of the skeletal system, therefore very mobile
  • Located opposite C3
  • Positioned by musculature above (suprahyoid) and below (infrahyoid)
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11
Q

Suprahyoid muscles

A
  • Connect the hyoid to the skull
  • Action – elevate the hyoid (and
    therefore the larynx)
  • Digastric:
  • anterior belly
  • posterior belly
  • Stylohyoid
  • Mylohyoid
  • Geniohyoid
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12
Q

Infrahyoid muscles

A
  • Connect the hyoid to the larynx and
    the sternum
  • action- depress the hyoid
  • Sternohyoid
  • Omohyoid
  • Sternothyroid
  • Thyrohyoid
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13
Q

roman number and function of crainal nerve- olfactory

A

smell
I

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14
Q

roman number and function of crainal nerve- optic

A

II
vision

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15
Q

roman number and function of crainal nerve- oculmotor

A

III
movement of eyeball

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16
Q

roman number and function of crainal nerve- trachlear

A

IV
movement of eyeball

17
Q

roman number and function of crainal nerve- trigeminal

A

V
muscles of mastication, skin of face

18
Q

roman number and function of crainal nerve- abducens

A

VI
movement of eyeball

19
Q

roman number and function of crainal nerve- facial

A

VII
muscles of facial expression

20
Q

roman number and function of crainal nerve- vestibulocochlear

A

VIII
hearing and balance

21
Q

roman number and function of crainal nerve- glosspharyngeal

A

IX
sensations from pharynx

22
Q

roman number and function of crainal nerve- vagus

A

X
muscles of pharynx and larynx

23
Q

roman number and function of crainal nerve- accessory

A

XI
joins vagus

24
Q

roman number and function of crainal nerve- hypoglossal

A

XII
muscles of tongue

25
Q

pharrynx

A

is a fibromuscular tube extdending from the base of the skull to inferior part of larynx (C6)
shared bw respirtory and digestive systems, it has connections to the nasal cavity, oral cavity, larnyx

26
Q

pharynx- regions and boundries

A

nasopharynx(post to nose)
choanae
tip of soft palate

oropharynx
tip of soft palate
tip of epiglottis

laryngopharynx
tip of epiglottis
inferior edge larynx to oesophagus

27
Q

external layer of the pharynx

A

constrictor
circular orientation
3 overlapping bands
superior constrictor
middle constrictor
inferior constrictor

28
Q

internal layer of the pharynx

A

elevators
vertical orientation
salpingopharyngeus
palatopharyngeus
stylopharyngeus

29
Q

constrictors

A

involunary contraction
function in a sequance
superior to inferior
push bolus into oesphagus
innervated by the vagus nerve

30
Q

elevators

A

lift regions of pharynx

salpingopharyngeus and palatopharyngeus are innervatedd by vagus nerve
stylopharyngeus innervated by glossopharyngeal nerve

31
Q

deglutition

A

process of swallowing
involved the passing of food/ liquid from the mouth to the pharynx then to the oesophagus
two stages= 1st food from mouth to pharynx is voluntary
2nd bolus through pharynx to oesphagus involuntary

32
Q

larynx

A

is an air passage, a sphincter and an organ of phonation (speech production)

33
Q

larynx functions

A

protect the lower airways
prevent entry of foreign objects
provide a mechanism to clear the lower airways eg cough

34
Q

laryx components

A

single cartliages:
epiglottis, thyroid, cricoid
paired: arytenoid, corniculate, cuneiform

35
Q

false vocal cords

A

no role in phonation
protective function
superior to true vocal cords

36
Q

vocal folds

A

moved by laryngeal muscles
- quiet inspiration= open
- forced inspiration= open wider
- swallowing= completely closed
- phonation= folds adducted/ close to touching

37
Q

nerve supply of larynx=

A

motor and sensory is vagus nerve

anatomy (23 decks)

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