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Veterinary anatomy 3 > Spinal cord > Flashcards

Spinal cord Flashcards

1
Q

Spinal cord

A

Medulla spinalis

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2
Q

Describe the spinal cord in three words

A

Long, cylindrical and segmented

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3
Q

Spinal cord receives ______ from _____, _______ and ________

A

Sensory input

From limbs, organs and trunk

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4
Q

What kind of processing of info happens in the spinal cord?

A

Initial processing of info

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5
Q

Spinal cord passes through ________ to _______

In _____________, goes through _____________ of vertebrae

A

Through foramen magnum to L1- L2

In canalis vertebralis, goes through foramen vertebrale of vertebrae

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6
Q

What happens to the spinal cord caudal to the lumbar segments?

A

It tapers into conus medullaris

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7
Q

How does the spinal cord terminate?

A

Terminates in a thin strand called filum terminale, which anchors the spinal cord

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8
Q

What are the functions of the spinal cord?

A

Sensory and motor innervation of entire body inferior to head through spinal nerves

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9
Q

Functions of the spinal cord. There is a two-way _______ pathway between ____ and the _____

A

Two-way conduction pathway

Between body and the brain

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10
Q

Functions of the spinal cord. The spinal cord is a center of what?

A

Major center of reflexes

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11
Q

Which one grows faster:
a) spinal cord OR b) vertebral columns

What does this cause?

A

Vertebral columns grow faster than the spinal cord

This causes the segments of the cord to be cranial where their corresponding spinal nerves emerge through intervertebral foramina

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12
Q

Intervertebral foramina in latin?

A

Foramen intervertebrale

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13
Q

Cauda equina

A

All nerves that originate at Conus medullaris move caudally and form a collection of nerve roots at the caudal end of the vertebral canal

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14
Q

The spinal cord is divided by its location to:

A

Pars; cervicalis, thoracica, lumbalis, sacralis and caudalis

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15
Q

PARTS: Sulcus medianus

A

Dorsally in the centre

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16
Q

PARTS: Sulcus intermedius dorsalis

A

Between the other two

17
Q

PARTS: Sulcus lateralis dorsalis

A

Dorsally and laterally located

18
Q

PARTS: Fissura mediana

A

Deep median fissure in the ventral side

19
Q

PARTS: Septum medianum dorsale

A

From median groove- into the spinal cord

20
Q

PARTS: Dorsally in the centre

A

Sulcus medianus

21
Q

PARTS: Dorsally and laterally located

A

Sulcus lateralis dorsalis

22
Q

PARTS: Deep median fissure in the ventral side

A

Fissura mediana

23
Q

PARTS: From median groove- into the spinal cord

A

Septum medianum dorsale

24
Q

Spinal nerves are formed by the conjoining of ______ and ______ roots, which come together as the ______ at the point where the _____ exit and _____ the vertebral canal

A

Spinal nerves are formed by the conjoining of Dorsal and ventral roots, which come together as the __nerve__ at the point where the __axons__ exit and _enter__ the vertebral canal

25
Q

The cord is ________ dorso______ and has an _______ shape. It is enlarged in ______ and ______ regions

  - Intumescentia cervicalis:
  - Intumescentia lumbalis:
A

Compressed dorsoventrally and has an elliptical

It is enlarged in cervical and lumbar regions

  - IC: Sensory input and motor output to FORELIMB
   - IL: Sensory input and motor output to HINDLIMB
26
Q

What is filum terminale made of?

A

Fibrous tissue

27
Q

Where is the spinal cords grey matter found?

A

At the center of the cord

28
Q

What does the grey matter form in the center?

A

Forms a butterfly shape on cross-section

29
Q

What is the grey matter made of?

A

Nerve cell bodies

30
Q

What does the grey matter surround?

A

Grey matter surrounds the canalis centralis and connects the two halves of the d

31
Q

Horns of the grey matter:

A
  • Cornu dorsale
  • Cornu laterale
  • Cornu ventrale
32
Q

What surrounds the GREY matter?

A

Fiber tracts, in other words WHITE matter surrounds the GREY matter

33
Q

What do the fiber tracts consist of?

A

three paired peripheral funiculi

  1. Funiculus dorsalis
    • terminates in brain. conducts ascending pathways
  2. Funiculus lateralis
    • conducts ascending and descending pathways
  3. Funiculus ventralis
    • conducts descending pathways + stimulates muscles and glands to contract = pyramidal tract
34
Q

Commissura alba ?

A

Connective fibers between median fissure and grey matter

35
Q

Formation reticularis ?

What does it regulate?

A

Mixture of white and grey matter. It is between dorsal and lat. horns. One of the oldest part of the barinstem.

Regulates: cardiovasc. system, breathing, habituation, pain modulation etc.

Veterinary anatomy 3 (10 decks)

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