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Veterinary Anatomy III > THRC.3 > Flashcards

THRC.3 Flashcards

1
Q

What is contained in the rhomboencephalon?

A
  • Myelencephalon
    • Medulla oblongata
  • Metencephalon
    • Pons
    • Cerebellum
    • Medullary vela
    • Rhomboid fossa
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2
Q

Myelencephalon composition

A
  • Medulla oblongata
  • Fourth ventricle of the brain
  • Caudal medullary velum
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3
Q
A

Medulla oblongata

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4
Q
A

Metencephalon

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5
Q
A

Myelencephalon

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6
Q

Give the arrangement of nuclei in medulla oblongata

A
  • Sensory nuclei are more lateral
  • Motor nuclei are more medial
  • Parasympathetic nucle between sensory and motor nuclei
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7
Q

Where is medulla oblongata located?

A
  • In fossa medullae oblongata
  • Dorsal to basiocciput
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8
Q

The ventral surface of medulla oblongata is divided by…

A

Ventral median fissure

(continuous from the spinal cord)

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9
Q
A

Medulla oblongata

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10
Q

Fibres cross the midline to form the…

A

Pyramidal decussation

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11
Q
A

Pyramids of vermis

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12
Q

What is represented by the blue crosses?

A

Decussatio pyramidium

  • At the spinomedullary junction*
  • Accounts for movements on one side of the body are controlled by the opposite side of the brain*
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13
Q
A

Pyramids of vermis

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14
Q
A

Trapezoid body

Belongs to the pons

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15
Q
A

Ventral median fissure

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16
Q
A

Decussatio pyramidium

  • At the* spinomedullary junction
  • Accounts for movements on one side of the body are controlled by the opposite side of the brain*
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17
Q
A

CN-VI Abducent nerve

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18
Q
A

CN-VII Facial nerve

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19
Q
A

CN-VIII Vestibulocochlear nerve

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20
Q
A

CN-IX Glossopharyngeal nerve

21
Q
A

CN-X Vagus nerve

22
Q
A

CN-XI Accessory nerve

Recieves additional spinal root from the spinal cord

23
Q
A

CN-XII Hypoglossal nerve

24
Q

13

A

Location of Olivary nucleus

25
Function of the olivary nucleus
Control of body motor function
26
Function of the medulla oblongata
Respiration and circulation control
27
Composition of the metecephalon
* Pons * Cerebellum * Medullary vela * Rhomboid fossa
28
Pons
29
Cerebellum
30
The dorsal part of the pons
Tegmentum of the pons
31
**CN-V Trigeminal nerve**
32
Location of the motor nucleus of CN-V
Inside the pons
33
Location of the cerebellum
Dorsal to the fourth ventricle
34
Structure of the cerebellum
Fissures \> Lobes \> Small lobules \> _Folia_ Forms the 'tree of life'
35
The grey matter of the cerebellum
Cortex cerebelli
36
White matter of the cerebellum
Medulla
37
Grey matter in the medulla forms...
Basal nuclei
38
What attaches the cerebellum to the brainstem?
6 peduncles: 3 on each side * Rostral cerebellar peduncle * Caudal cerebellar peduncle * Middle cerebellar peduncle
39
Insertion of the rostral cerebellar peduncle
Rostral medullary velum
40
Insertion of the caudal cerebellar peduncle
* Caudal medullary velum * Medulla oblongata
41
Insertion of the middle cerebellar peduncle
Pons
42
Function of the cerebellum
* Balance * Co-ordination of skeletal muscles
43
Rostral medullary velum
44
Location of the medullary velae
Between the: * Rhomboid fossa (floor) * Cerebellum
45
Structure of the medullary velae
* Tent shape forms * For the roof over the fourth ventricle
46
Give the sulcuses of the fossa rhomboidea What is between them
* Sulcus medianus * Sulcus limitans x 2 Eminentia medialis is found between them
47
The walls of the rhomboid fossa are marked by...
*Area* *vestibularis**/**acustica* | (Bilateral eminence)
48
Obex
The caudal end of the sulcus medianus in fossa rhomboideus
49
Which cranial nerve nuclei are found in eminentia medialis?
* IX * X * XII

Veterinary Anatomy III (124 decks)

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