anatomy of back and spinal cord, intracranial space and head trauma Flashcards

1
Q

name the extrinsic back muscles?

these move the upper limb

A

trapezius
latissimus dorsi
levator scapulae
major and minor rhomboids

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2
Q

name the intrinsic back muscles?

these maintain posture and move the spine

A
erector spinae (superficial)
transversospinalis (deep)
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3
Q

how many erector spinae are there?

A

3 (vertically arranged muscle groups located just lateral to the spine)

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4
Q

where do all the fibres from erector spinae attach?

A

sacrum and iliac crest

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5
Q

where is transversospinalis located?

A

between transverse and spinous processes

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6
Q

extension of the back is done via..?

A

intrinsic muscles

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7
Q

flexion of the back is done via,,?

A

psoas major and rectus abdominus

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8
Q

how many vertebrae are there?

A

33

c7
t12
l5
s5- fused to 1
4 coccygeal -fused to 1
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9
Q

primary curves of spine?

A

thoracic and sacral

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10
Q

secondary curves of spine?

A

cervical and lumbar

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11
Q

name of joint between vertebra

A

facet joints

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12
Q

short ligament

connect adjacent laminae posterior to spinal cord

A

ligament flavum

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13
Q

narrow weak ligament
attaches to posterior aspects of all vertebral bodies and intervertebral discs

prevents over flexion of spine

A

anterior longitudinal ligament

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14
Q

short strong ligament

connects tips of spinous processes

A

supraspinous ligament

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15
Q

short weak ligament

connects superior/inferior surfaces of adjacent spinous processes

A

interspinous ligament

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16
Q

first palpable vertebra

17
Q

had odontoid process?

18
Q

where is the atlanto-occipital joints

A

between occipital condyles and superior articular facets of atlas

19
Q

where is the atalnto-axial joint?

A

3 of them

2 between inferior articular facets of atlas and superior articular facets of axis

1 between anterior arch of atlas and odontoid process of axis

20
Q

what are the 2 layers of the meninges?

A

from superficial to deeep:

dura mater
arachnoid mater
pia mater

21
Q

what are the 5 layers of the scalp?

A
skin
connective tissue
aponeurosis
loose connective tissue
pericranium
22
Q

what is the pterion?

A

H shaped thinnets part of skull

middle meningeal artery is underneath

23
Q

stretching of dura matter causes what?

A

the pain in meningitis

24
Q

tough sheet of dura mater that tents over cerebellum

A

tentorium cerebelli

25
midline structure made of dura matter separates R+L hemispheres
falx cerebri
26
does the vertebral arteries pass through foramen magnum?
yes
27
artery that supplies medial aspect of right cerebral hemsiphere?
right anterior cerebral artery
28
artery that supplies the posterior ascpect of right cerebral hemisphere? (including visual cortex)
right posterior cerebral artery
29
artery that supplies the lateral aspect of the left cerebral hemisphere?
left middle cerebral artery
30
what would you find in the subarachnoid space?
CSF
31
where is CSF produced?
choroid plexus of ventricles
32
describe the circculation of CSF?
secreted by choroid plexus from right and left lateral ventricles via R+L foraminae of munro into 3rd ventricle (midline) then via cerebral aqueduct into 4th ventricle then mainly into subaroachnoid space but some into central canal then reabsrob via ARACHNOID GRANULATIONS into dural venous sinuses
33
extra dural haemorrhage
between bone and dura matter
34
subdural haemorrhage
separates dura from arachnoid
35
subarachnoid haemorrhage
into CSF and subarachnoid space
36
what is hydrocephalus?
where the is increased CSF volume due to excess production, obstruction of outflow or inadequate reabsorption
37
when shouldnt you perform a lumbar puncture?
if increased intra cranial pressure