Veterinary Anatomy III > THRA.2 > Flashcards

THRA.2 Flashcards

(43 cards)

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1
Q

Give the main components of the topic: “Bones of the Lateral and Dorsal Side of the Neurocranium”

A
  1. Os temporale
  2. Os frontale
  3. Os parietale
  4. Os interparietale
  5. Os ethmoidale
  6. Os occipitale
  7. Os zygomaticum
  8. Os pterygoideum
  9. Os palatinum
  10. Os lacrimalis

(FITZ POPPLE)

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2
Q

Give the main constituents of os temporale​

A
  1. Pars squamosa
  2. Pars petrosa
  3. Pars tympanica
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3
Q

Give the components of os temporale pars squamosa

A
  1. Crista temporalis
  2. Linea temporalis
  3. Sinus frontalis caudalis
  4. Processus nuchalis (Su)
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4
Q

Sinus frontalis caudalis

A

Excavates os temporale in Ru/Su

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5
Q

Processus nuchalis

A

Su Only

Attachment point of the the stylohyoid bone

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6
Q

Give the components of os temporale pars petrosa

A
  1. Crista partis petrosae (Eq/Ca)
  2. Fissura petrooccipitalis
  3. Foramen Stylomastoideum
  4. Processus styloideus (ØCa)
  5. Porus acusticus internus
  6. Meatus acusticus internus
  7. Apertura externa aqueductus vestibuli
  8. Apertura externa canaliculi cochleae
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7
Q
  • Crista partis petrosae*
  • Fissura petrooccipitalis*
A

Junction of the petrous and occipital bones

Conducts greater petrosal nerve and the chorda tympani

(Both ex CN-VII)

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8
Q

Foramen stylomastoideum

A

Between processus styloideus and processus mastoideus

Conducts the facial nerve (CN-VII) through canalis facialis

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9
Q

Processus styloideus

A

Rostroventral to the porus acusticus externus

Attachment of the stylohyoid bone in Eq/Ru

(Attachment in Ca is the processus mastoideus)

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10
Q

Porus acusticus internus et meatus acusticus internus

A
  • Area nervi facialis* (CN-VII) (RostDors)
  • Area cochleae* (ex CN-VIII) (RostVent)
  • Foramen vestibulare dorsale* (ex CN-VIII) (CaudDors)
  • Foramen vestibular ventrale* (exCN-VIII (Caud Vent)
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11
Q

Incisura semilunaris

A

Aka fovea ganglii nervi trigemini

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12
Q

Apertura externa aqueductis vestibuli

A

Dorsal slit on pars petrosa

Communication of the vestibular apparatus with the middle ear

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13
Q

Apertura externa canaliculi cochleae

A

Caudoventral slit on pars petrosa

Communication of the cochlea with the middle ear

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14
Q

Give the components of os temporale pars tympanica

A
  1. Porus acusticus externus
  2. Meatus acusticus externus
  3. Bulla tympanica
  4. Processus muscularis
  5. Fissura petrotympanica
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15
Q

Which structure(s) seperate pars tympanica from pars petrosa?

A
  1. Bulla tympanica
  2. Processus muscularis
  3. Fissura petrotympanica
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16
Q

Give the components of Os frontale

A
  1. Crista sagittalis externa
  2. Processus tentoricus
  3. Processus cornualis (Bo Only)
  4. Foramen supraorbitale (ØCa)
  5. Sinus frontalis
  6. Foramen ethmoidale
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17
Q

Foramen supraorbitale

A

ØCa

Becomes canalis supraorbitalis (Ru/Su)

Frontal artery, vein and nerve (ex CN-V1)

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18
Q

Sinus frontalis

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A

Seperated by septum sagittalis into left and right sinuses

Single in Eq

Divided in Ca/Ru/Su

19
Q

Foramen ethmoidale

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A

Foramina in Ru

In equine, also includes the ethmoid bone

External ethmoidal artery

Ethmoidal vein and nerve (ex CN-V1)

20
Q

Give the component(s) of os parietale et os interparietale

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A

Crista sagittalis externa et processus tentoricus

21
Q

Which species is os parietale et os interparietale not fused?

22
Q

Give the component(s) of os ethmoidale

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A
  • Crista sagittalis interna*
  • Lamina perpendicularis*
23
Q

Give the main component(s) of os occipitale

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A
  1. Pars squamosa et Partes laterales
  2. Facies nuchalis
24
Q

Give the component(s) of os occipitale pars squamosa et partes laterales

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A
  1. Protuberentia occipitalis interna
  2. Sinus frontalis caudalis
  3. Impressiones vermales
  4. Sulci sinus transversi
25
*Sinus frontalis caudalis*
Excavates the occipital bone in Ru/Su
26
Give the component(s) of *facies nuchalis ossis ocipitalis*
1. *Protuberentia occipitalis externa​* 2. *Crista nuchae* 3. *Foramen mastoideum* (ØSu)
27
*Protuberentia occipitalis externa*
Attachment of *ligamentum nuchae* *Crista occipitalis externa* runs ventrally from here to *foramen magnum*
28
*Crista nuchae*
Becomes the *linea nuchae* (Ru only)
29
*Foramen mastoideum*
ØSu Mastoid emissary vein Small meningeal branch of the occipital artery
30
Give the main component(s) of *os lacrimale*
*Bulla lacrimalis* (Ru)
31
*Bulla lacrimalis*
Ru Only Ventral to the orbit, Connects to sinus maxillaris
32
Give the key structure(s) of the topic: "Bones of the Lateral and Dorsal Side of the Neurocranium"
1. *Calvaria* 2. *Arcus zygomaticus* 3. *Orbita* 4. *Meatus temporalis* 5. *Fossa pterygopalatina* 6. *Fossa temporalis*
33
*Calvaria*
Composed of Occipital, parietal, interparietal and frontal bones Posesses *impressiones digitatae* Ca/Eq:*​ Tentorium cerebelli osseum*
34
*Tentorium cerebelli osseum*
Eq/Ca Seperates cerebrum from cerebellum dorsally Composed of *processi tentorici* of the parietal, interparietal and occipital bones
35
*Arcus Zygomaticus*
Composition: * Os temporale pars squamosa: Processus zygomaticus* * Os frontale: Processus zygomaticus* * Os zygomaticum: Processus temporale:* * (+Processus frontale* in Ru/Ca/Su) Orbital ligament attachment in Ca/Su
36
In equine, the *os temporalis* *processus zygomaticus* directly joins the...
*Os temporale pars squamosa processus zygomaticus*
37
Give the structure(s) found on *orbita*
1. *Fossa sacci lacrimalis* 2. *Fossa glandulae lacrimalis* (Eq/Ru) 3. *Fossa musculi obliqui ventralis* 4. *Fovea throchlearis*
38
*Meatus temporalis*
Between *pars petrosa* and *pars squamosa* of *os temporale* Travels from *foramen retroarticulare* → External jugular vein
39
*Fossa pterygopalatina*
Caudoventral to the Orbit *Contains:* * *Foramen palatinum caudale* * *Foramen maxillaris* * *Foramen sphenopalatinum* (Vent → Dors)
40
*Foramen palatinum caudale*
A./v. palatina major → Palatine Plexus + *nervi palatina major* (*ex* CN-V2)
41
*Foramen maxillaris*
*A./V. maxillaris* via *canalis infraorbitalis* *nervi infraorbitalis* (*ex* CN-V2)
42
*Foramen sphenopalatinum*
Located medially in Eq/Ru A./V. sphenopalatina + *nervi nasalis caudalis* (*ex* CN-V2) → Nasal Cavity
43
*Fossa temporalis*
Section of *lamina externa,* bordered by: * linea temporalis* (Rostrally) * Crista temporalis* (Ventrolaterally) * Crista sagittalis externa* (Median Plane) * Crista nuchae* (Caudally)
Veterinary Anatomy III
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