Spinal Cord Flashcards
Exaggeration in the sagittal curvature in Thoracic Column
Kyphosis
Exagerration in the sagittal curvature in Lumbar Column
Lordosis
Lateral Deviation of the spinal cord
Scoliosis
Most common part of vertebral column for scolosios
Thoracic
Concave Curvature Ventrally
Thoracic
Sacral
Convex Curvature Ventrally
Cervical
Lumbar
Sacrum
Primary Curvature of vertebral column
Thoracic and Sacral
Concave Ventrally
Secondary Curvature of vertebral colun
Cervical and Lumbar
Convex Ventrally
characteristic feature of first cervical vertebrae
absent body
characteristic feature of second cervical vertebrae
odontoid process/dens
characteristic feature of seventh cervical vertebrae
long spinous process and not bifid
Also called vertebra prominens
C7
Typical Cervical Vertebra
C3 - C6
Atypical Cervical Vertebra
C1, C2, C7
Transverse Foramen
Vertebral Artery
Atlas
C1
Axis
C2
Characteristic of Cervical Vertebrae
- transverse process have Foramen Transversarium
- Spines are short and bifid
- body is small and broad
- vertebral foramen is large and triangular
- superior articular processes have facets that face posteriorly and superiorly
- Inferior articular process face inferiorly and anteriorly
Subclavian artery is divided into how many parts
3
What divides the subclavian arrtery?
Scalenous anterior muscle
First part of subclavian artery
- vertebral
- thyrocervical
- internal thoracic
Second part of subclavian artery
- costocervical
Third part of subclavian artery
None
Heart Shaped Body
Thoracic Vertebra
Facets on the bodies of the thoracic vertebra are for
articulation with HEAD of ribs
Facets on the transverse process of the thoracic vertebra are for
articulation with TUBERCLE of ribs
Characteristic of Thoracic Vertebra
- medium size
- heart shaped
- vertebral foramen is small and circular
- spines are long
- body facet - articulation with head of rib
- transverse process facet - articulation with tubercle of ribs
Characteristic of Lumbar Vertebra
- body is large
- kidney shape
- pedicles are strong and directed backward
- laminae are short in vertical dimension
- vertebral foramina are triangular
- transverse process are long and slender
- spinous process are short, flat, and quadrangular; project posteriorly
Termination of Spinal Cord in Adult
L1
Termination of Spinal Cord in Newborn
L3
Termination of Subarachnoid Space in Adult
S2 - S3
Hyoid Bone
C3
Bifurcation of Common Carotid Artery
C4
Thyroid Cartilage
C5
Carotid Pulse Palpated
C5
Cricoid Cartilage
C6
Start of Trachea and Esophagus
C6
Sternal notch
T2
Arch of Aorta
T2
Sternal Angle
T4
Junction of Superior and inferior mediastinum
T4
Bifurcation of Trachea
T4
Pulmonary Hilum
T5 - T7
Inferior Vena Cava hiatus
T8
Xiphysternal Joint
T9
Esophageal Hiatus
T10
Aortic Hiatus
T12
Duodenum
T12 - L1
Celiac Artery
T12
Upper pole of left kidney
T12
Superior Mesenteric Artery
L1
Upper pole of right kidney
L1
End of spinal cord in adult and pia mater (conus medullaris)
L1
Renal Artery
L2
End of spinal cord in newborn
L3
Inferior Mesenteric Artery
L3
Umbilicus
L3
Iliac Crest
L4
Bifurcation of Abdominal Aorta
L4
Sacral Promontory
S1
End of dural sac, dura, arachnoid, subarachnoid space, and CSF
S2
End of sigmoid colon
S3
Spinal cord of embryo
entire length of vertebral canal
Spinal cord of 6 months
S1
White Matter of Cervical
- Fasciculus Cutaneous
2. Fasciculus Gracilis
Gray Matter/Lateral Horn of Cervical
Absent
White Matter of Thoracic
- Fasciculus Cutaneous (T1 - T6)
2. Fasciculus Gracilis
Gray Matter of Thoracic
Present
White Matter of Lumbar
- Fasciculus Gracilis
Gray Matter of Lumbar
Present
White Matter of Sacral
- Fasciculus Gracillis
Gray Matter of Sacral
Absent
Propioception lower part of the body
Fasciculus Gracillis
Propioception upper part of the body
Fasciculus Cuneatus
Ascending Tract of Spinal Column
- Dorsal/Posterior Column
2. Spinothalamic Tract
Lesion in Dorsal/ Posterior Column
- Same side
- Propioception
- Fasciculus Gracillis and Cuneatus
Types of lesion in the spinothalamic tract
- Anterior STT
2. Lateral STT
Anterior Spinothalamic tract lesion
- touch
2. pressure
Lateral Spinothalamic tract lesion
- temperature
2. pain
Descending Tract of Spinal Column
- lateral corticospinal (UMNL)
- rubrospinal
- lateral reticulospinal
- medial reticulospinal
- vetibulospinal
- tectospinal
- anterior corticospinal
Lesion in the descending tract of spinal column
above decussation - opposite side
below decussation - same side
- Progressive cavitation around central canal
2. BILATERAL loss of pain and temperature sensation in hands and forearm
Syringomtelia
Central cord
Attack on anterior horn cells leading to LMNL
No sensory loss
Poliomyelitis
- Caused by neurosyphilis
2. Degeneraation of Dorsal Column (loss of vibration and position sense)
Tabes Dorsalis
Posterior Cord
- Pure motor disease
2, degeneration of anterior horn cells and corticospinal tract - no sensory loss
AML - amyotrophic lateral sclerosis
- vitamin B12 deficiency
2. degeneration of posterior and lateral columns
Subacure combined degeneration
Spinal Cord hemisection
Brown sequard syndrome
Feature of Brown Sequard Syndrome
- contralateral loss of pain and temperatur
- Ipsilateral loss of proprioception
- ipsilateral manifestation of upper and lower motor neuron lesion
Signs of Injury in Lemniscal Pathway
- Inability to recognize limb position
- astereognosis
- loss of 2 point discrimination
- loss of vibration sense
5 + romberg sign
Lateral Medullary/ PICA syndrome/ Alternating Sensory Loss
Wallenberg
Millard Guber
Pons
Claude
Midbrain
Weber
Midbrain
Bilateral cervical spinal cord damage
C4 - C6
Quadriplegia
Unilateral spinal cord lesion in THORACIC level; result in paralysis of the ipsilateral lower extremity
Monoplegia
Bilateral spinal cord lesion in THORACIC level; result in paralysis of bilateral lower extremity
Paraplegia
Lumbar Puncture Process
SSS I LED AS
Herniation in Cervical Intervertebral Disc
C5 - C6
C6 - C7
Herniation in Lumbar Intervertebral Disc
L4 - L5
L5 - sacrum
Spina Bifida Oculta
L5 - S1
presence of dimple with tuft of hair
Spina Bifida Cystica
- spina bifida with meningocele
- spina bifida with meningomyelocele
- spina bifida with myeloschisis
superficial muscle of the back
connected with shoulder girdle
intermediate muscles of the back
involved with movements of the thoracic cage
deep muscles of the back
- Superficial - erector spinae
- Intermediate - Transversospinalis
- Deep - interspinalis; intertransversarii
Traingle of auscultation
- latissimus dorsi
- trapezius
- medial border of scapula
Breath sounds are best heard
Lumbar Traingle of Petit
- External oblique abdomen
- latissimus dorsi
- iliac crest
Site of Lumbar Hernia