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Veterinary Anatomy III > THRA.1 > Flashcards

THRA.1 Flashcards

1
Q

Give the Main Constituents of the Topic: “Bones of the Base of the Neurocranium”

A
  • Presphenoid Bone
  • Basisphenoid Bone
  • Ethmoid Bone
  • Squamous Part of the Temporal Bone
  • Basal Part of the Occipital Bone
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2
Q

Give the key small components of the Topic: “Bones of the Base of the Neurocranium”

A
  1. Fossa cranii rostralis
  2. Fossa cranii media
  3. Fossa cranii caudalis
  4. Foramen Lacerum
  5. Foramen ovale
  6. Foramen Caroticum
  7. Fissura petrooccipitalis
  8. Foramen Jugulare
  9. Tuberculum musculare
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3
Q

Give the structures of the corpus ossis praesphenoidalis

A
  1. Jugum Sphenoidale
  2. Sulcus Chiasmatis
  3. Sulcus nervi optici
  4. Rostrum ossis sphenoidalis
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4
Q

Jugum sphenoidale

A

The flat bony plate covering the chiasma opticum

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5
Q

Sulcus chiasmatis

A

One of two sites where the optic nerves (fasciculi optici) (CN-II) leave the neurocranium (as well as the sulcus nervi optici).

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6
Q

Sulcus nervi optici

A

One of two sites where the optic nerves (fasciculi optici) (CN-II) leave the neurocranium (as well as the sulcus chiasmatis).

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7
Q

Rostrum ossis sphenoidalis

A

At the base of the seperation of the two ethmoidal fossae

Contains: crista sphenoidalis

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8
Q

What is the attachment site of lamina perpendicularis

A

Crista sphenoidalis

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9
Q

Give the structures of the alae ossis praesphenoidalis

A
  1. Processus clinoideus rostralis
  2. Foramen opticum
  3. Fissura orbitalis
  4. Foramen rotundum
  5. Foramen trochleare (Eq. Only)
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10
Q

Where is processus clinoideus rostralis located?

A

On the caudal border of the alae ossis praesphenoidalis

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11
Q

Which structure(s) pass through foramen opticum?

A

Fasciculus opticus (CN-II)

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12
Q

Which structure(s) pass through fissura orbitalis?

A
  • n. ophthalmicus (CN-V1)
  • n. oculomotorius (CN-III)
  • n. abducens (CN-VI)
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13
Q

Which structure(s) pass through foramen rotundum?

A
  • n. maxillaris (CN-V2)
  • ​n. throchlearis (CN-IV) ØEq
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14
Q

Which structure(s) pass through foramen throchleare?

A

n. trochlearis (CN-IV) (Eq Only)

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15
Q

Fissura orbitalis & foramen rotundum combine to form which structure, in which species?

A

Ru/Su

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16
Q

Give the constituents of os basisphenoidale

A
  • Corpus ossis basisphenoidalis
  • Alae ossis basisphenoidalis
  • Processi pterygoidei
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17
Q

Give the structures of the corpus ossis basisphenoidalis

A
  1. Fossa hypophysialis
  2. Dorsum sellae turcicae (ØEq)
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18
Q

Fossa hypophysialis

A

Located at the centre of sella turcica

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19
Q

Dorsum sellae turcicae

A

Marks the ventral division between the cerebrum and the cerebellum

Has processi clinoidei caudalis

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20
Q

Give the constituents of alae ossis basisphenoidalis

A
  1. Sulcus nervi maxillaris
  2. Sulcus nervi ophthalmici
  3. Spina ossis sphenoidalis
  4. Fossae piriformis
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21
Q

Sulcus nervi maxillaris

A

Contains CN-V2

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22
Q

Sulcus nervi ophthalmici

A

Contains (CN-V1)

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23
Q

Spina ossis sphenoidalis

A

Lateral to:

  • Suclus nervi maxillaris
  • Sulcus nervi ophthalmici
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24
Q

Fossae piriformis

A

Most lateral structures of the alae ossis basisphenoidalis

Support the cerebral piriform lobes

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25
*Processi pterygoidei*
Caudoventrally pointed processes Continue rostrally to form the *cristae pterygoideae* **(ØCa)**
26
Give the constituents of *processi pterygoidei*
1. *Foramen alare rostrale* 2. *Foramen alare caudale* 3. *Canalis alaris* (ØRu) 4. *Foramen alare parvum* (Eq Only) 5. *Canalis pterygoideus* 6. *Sulcus n. canalis pterygoidei*
27
*Foramen alare rostrale et caudale* forms...
*Canalis alaris* (ØRu)
28
Which structure(s) pass through *canalis alaris*?
Maxillary artery
29
Which structure(s) pass through *Foramen alare parvum*
Rostral deep temporal artery
30
*Canalis pterygoideus*
Located on the ventral aspect of *processi pterygoidei*
31
*Sulcus n. canalis pterygoidei*
Located on the ventral aspect of *processi pterygoidei*
32
Give the constituents of *os ethmoidale*
1. *Lamina cribrosa* 2. *Fossae ethmoidales* 3. *Crista galli*
33
Give the constituents of *os temporale pars squamosa*
1. *Foramen retroarticulare* 2. *Processus retroarticularis* 3. *Canalis musculotabarius*
34
*Foramen retroarticulare*
Located caudal to the processus retroarticularis Contains emissary veins for the temporal sinus
35
*Canalis musculotubarius*
In Ca: Lateral to the *foramen caroticum* In Ru: Caudal to the *foramen ovale* * *Double canal* * Contains the Auditory tube and *m. tensor veli palatini*
36
Give the constituents of *os occipitale pars basilaris*
* *Impressio pontina* * *Impressio medullaris* * *Foramen magnum* * Condyles with *processi paracondylares* * *Foramen n. hypoglossi*
37
*Impressio pontina*
Location of the pons
38
*Impressio medullaris*
Location of the medulla oblongata
39
*Foramen magnum*
Passage of the *medulla spinalis* into the vertebral column
40
*Processi paracondylares*
Cervical vertebral ligamen attachment Contains *foramen/canalis condylaris* in Ca
41
*Foramen n. hypoglossi*
The following leave the foramen and cranial cavity: * n. hypoglossis (CN-XII) * Condylar vein * Condylar artery
42
*Fossa cranii rostralis*
Mostly *os praesphenoidale* Between *laminae cribrosae* and *alae ossis praesphenoidalis* Caudally bordered by *crista orbitosphenoidalis*
43
*Fossa cranii media*
Mostly *os basisphenoidale* Between *crista orbitosphenoidalis* and *sutra/crista sphenooccipitalis* in Eq Between crista orbitosphenoidalis and *dorsum sellae turcicae* in other species
44
*Fossa cranii caudalis*
Mostly *os occipitale pars basilaris* and *os temporale pars petrosa* Found between: * *sutra/crista sphenooccipitalis* * *dorsum sellae turcicae* * *foramen magnum*
45
*Foramen lacerum*
Eq/Su Only Located accross *os basisphenoidalis*, *os temporalis* and *os occipitalis* Internally conducts: * Internal carotid artery and nerve *(via incisura carotica)* * Mandibular nerve (CN-V3) *(via incisura ovalis)* * Middle meningeal artery *(via incisura spinosa)*
46
*Foramen ovale*
Ca/Ru Contains Mandibular nerve (CN-V3) Contains Internal Carotid nerve (In Ru)
47
*Foramen caroticum*
Ca Only Contains internal carotid nerve
48
*Fissura petrooccipitalis*
Eq/Ru/Su Continuation of *foramen lacerum* in Eq/Su Caudal to the *foramen ovale* in Ru
49
*Foramen Jugulare*
Between *os occipitale* and *os temporale pars petrosa* Caudal to *fissura petrooccipitalis* (continuation in Eq/Su) Internal carotid artery enters the *cavum cranii* here (in Ca) Conducts: * n. paraglossopharyngeus (CN-IX) * n. vagus (CN-X) * n. accessorius (CN-XI)
50
*Tuberculum musculare*
Between *os basisphenoidale* and *os occipitale* Attachment of the muscles of the neck *Tuberculum pharyngeum* present ventrally (in Ca)
51
*Lamina perpendicularis*
Located caudally of *septum nasi*
52
*Sulcus nervi maxillaris* and *sulcus nervi ophthalmici* form a single groove in which species?
Ru/Su
53
Give the constituents of *os ethmoidale*
1. *Lamina cribrosa* 2. *Fossae ethmoidales* 3. *Crista galli*
54
*Crista galli*
Seperates the two ethmoidal fossae Leads to *crista sagittalis interna*
55
*Os praesphenoidale*
56
* Lamina cribrosa* * Crista galli*
57
* Sulcus chiasmatis* * (To canalis opticus)*
58
*Fissura orbitalis*
59
*Fossa hypophysialis*
60
*Dorsum sellae turcicae*
61
*Foramen jugulare*
62
*Processus paracondylaris*
63
*Foramen ovale*

Veterinary Anatomy III (124 decks)

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