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Veterinary Anatomy III > THRA.5 > Flashcards

THRA.5 Flashcards

1
Q

Where does the mandible fuse rostrally?

A

The median mandibular synchondrosis

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2
Q

Which species rostrally have a fully ossified mandible?

A

Eq/Su

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3
Q

The two halves of the mandible diverge to enclose the…

A

Spatium mandibulae

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4
Q

Corpus mandibulae can be divided into which parts?

A
  • Pars incisiva
  • Pars molaris
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5
Q

Diastema is between…

A

C1 and P1

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6
Q

Which channel passes through the body of the mandible?

A

Canalis mandibularis

  • From foramen mandibulae
  • To foramen mentale (Foramina mentales in Ca/Su)
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7
Q

Which structure(s) pass through canalis mandibularis?

A
  • A./v. alveolaris inferior*
  • N. alveolaris mandibularis* (ex CN-V3)
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8
Q

Blood supply to the incisors travels through the…

A

Canalis mandibuloincisivus

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9
Q

Incisura vasorum facialium hosts which vessels?

A
  • A. facialis
  • V. facialis
  • Ductus parotideus
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10
Q

Incisura vasorum facialium is present in which species?

A

Eq Only

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11
Q

Where does the ramus mandibulae articulate?

A
  • Art. temporomandibularis*
  • Caput mandibulae* of processus condylaris presses against fossa mandibularis of the processus zygomaticus of os temporalis
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12
Q

What allows the gliding motion of art. temporomandibularis?

A

Discus temporomandibularis

Inside a synoival capsule

The dorsal and ventral compartments are divided by membrana synovialis

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13
Q

The outer membrana fibrosa of art. temporomandibularis is strengthened by…

A
  • Lig. laterale
  • Lig. caudale (ØCa/Su)

These extend between processus retroarticularis and the base of processis coronoideus

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14
Q
A

Fossa Temporalis

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15
Q
A

Tuberculum articulare

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16
Q
A

Processus Coronoideus

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17
Q
A

Ramus Mandibulae

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18
Q
A

Processus Condylaris

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19
Q
A

Processus Angularis (Ca)

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20
Q
A

Angulus Mandibulae

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21
Q
A

Incisura Mandibulae

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22
Q
A

Tuberositas M. Sternomandibularis (Eq)

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23
Q

Compare margo ventralis in Ru and Eq

A

Eq: Flat

Ru: Rounded

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24
Q
A

M. Temporalis

O: Fossa Temporalis

I: Coronoid Process on Mandible

A: Close Jaw

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25
Q
A

M. Masseter

O: Zygomatic Arch

I: Fossa Massaterica on Mandible

A: Close Jaw

26
Q
A

M. Masseter

O: Zygomatic Arch

I: Fossa Massaterica on Mandible

A: Close Jaw

27
Q
A

M. Pterygoideus Medialis

O: Fossa Pterygopalatina

I: Fossa Pterygoidea

A: Grinding Movements, Close Jaw

28
Q
A

M. Temporalis

O: Fossa Temporalis

I: Coronoid Process on Mandible

A: Close Jaw

29
Q
A

M. Pterygoideus Medialis

O: Fossa Pterygopalatina

I: Fossa Pterygoidea

A: Grinding Movements, Close Jaw

30
Q
A

M. Digastricus

O: Processus Paracondylaris on Occipital Bone

I: Margo Ventralis on Mandible / Processus angularis (Ca only)

A: Open Mouth

31
Q
A

M. Pterygoideus Lateralis

O: Crista pterygoidea

I: Fovea Pterygoidea

A: Grinding movements, Closing Jaw

32
Q
A

M. Digastricus

O: Processus Paracondylaris on Occipital Bone

I: Margo Ventralis on Mandible / Processus angularis (Ca only)

A: Open Mouth

33
Q
A

M. Digastricus

O: Processus Paracondylaris on Occipital Bone

I: Margo Ventralis on Mandible / Processus angularis (Ca only)

A: Open Mouth

34
Q
A

M. Pterygoideus Lateralis

O: Crista pterygoidea

I: Fovea Pterygoidea

A: Grinding Movements, Close Jaw

35
Q

Which muscle(s) close the jaw?

A
  1. M. temporalis
  2. M. pterygoideus medialis
  3. M. pterygoideus lateralis
  4. M. masseter
36
Q

What does the hyoid skeleton consist of?

A
  • Os hyoideum / apparatus hyoideus
  • Suspensory apparatus
37
Q

What attaches the hyoid skeleton dorsally to the temporal bone?

A

Suspensory apparatus

38
Q

What are the functions of the hyoid bones?

A

Act as a suspensory architecture for the tongue and larynx

39
Q

Where does the Hyoid bone attach to the skull?

A
  • Mastoid process (Ca)
  • Styloid process (Eq/Ru)
  • Nuchal process (Su)
40
Q
A

Epihyoideum

Ligament in Su

41
Q
A

Basilhyoideum

42
Q
A

Thyrohyoideum

Connects with cartilago thyroidea

43
Q
A

Angulus stylohyoideus

44
Q
A

Processus lingualis (Eq/Ru)

45
Q
A

Ceratohyoideum

46
Q
A

Stylohyoideum

47
Q
A

Tympanohyoideum

48
Q

What is the os hyoideum composed of?

A
  1. Basilhyoid
  2. Thyrohyoid
  3. Ceratohyoid
49
Q

What is the suspensory apparatus composed of?

A
  1. Epihyoid
  2. Stylohyoid
  3. Tympanohyoid
50
Q

In which species are the Epihyoid and Stylohyoid fused?

51
Q

Give the muscle(s) moving the hyoid skeleton

A
  1. M. ceratohyoideus
  2. M. geniohyoideus
  3. M. mylohyoideus
  4. M. occipitohyoideus
  5. M. omohyoideus (Ø Ca)
  6. M. sternohyoideus
  7. M. sternothyroideus
  8. M. stylohyoideus
  9. M. thyreohyoideus
52
Q

2

A

M. stylohyoideus

O: Styloid bone

I: Basilhyoid bone

A: Raises basilhyoid

53
Q

3

A

M. mylohyoideus

O: linea mylohyoidea

I: Median raphe, Basilhyoid

A: Raises floor of oral cavity

54
Q

4

A

M. geniohyoideus

O: Ramus mandibulae

I: Basilhyoid

A: Pulls hyoid and larynx rostrally

55
Q

5

A

M. sternohyoideus

O: Manubrium sterni, Costal cartilage of R1

I: Basilhyoid

A: Pulls basilyoid caudally

56
Q

10

A

M. ceratohyoideus

O: Ceratohyoid

I: Thyrohyoid

A: Reduces angle between the bones

57
Q

9

A

M. occipitohyoideus

O: Processus paracondylaris

I: Stylohyoid

A: Moves stylohyoid caudally

58
Q

7

A

M. sternothyroideus

O: Manubrium sterni, costal cartilage of R1

I: Linea obliqua of the thyroid cartilage

A: Draws the larynx caudally

59
Q

8

A

M. thyrohyoideus

O: Linea obliqua of the thyroid cartilage

I: Thyrohyoid bone

A: Draws the hyoid caudally / the larynx rostrally

60
Q

6

A

M. omohyoideus (Ø Ca)

O: Subscapular fascia (Eq) / Lateral cervical fascia (Ru)

I: Basilhyoid

A: Retracts the hyoid

Veterinary Anatomy III (124 decks)

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