Vertebral Column Flashcards
What mesoderm does the vertebral column develop from?
Paraxial mesoderm
What guides the development of the vertebral column, spinal cord, and nucleus pulpous?
Notochord
What are condensations of mesoderm around the notochord called?
Somites
What type of myotome develops into skeletal muscles?
Somatic
What type of myotome develops into Smooth muscles?
Splanchnic
What type of myotome develops into extensor muscles supplied by dorsal rami?
Epimere
What type of myotome develops into flexor muscles supplied by ventral rami?
Hypomere
What is the body shape of a cervical vertebra?
Rectangular
What is the body shape of a thoracic vertebra?
Heart-shaped
What is the body shape of a lumbar vertebra?
Kidney-shaped
What vertebra has the longest transverse processes?
L3
What vertebra has the largest vertebral body?
L5
Which are Atypical cervical vertebrae?
C1-C2, C7
Which are Atypical thoracic vertebrae?
T1, T10-T12
Which is an Atypical Lumbar vertebrae?
L5
How do the cervical facets face?
Backwards, Upwards, and medially (BUM)
How do the thoracic facets face?
Backwards, Upwards, and laterally (BUL)
How do the lumbar facets face?
Backwards and medially (BM)
What is the size of the spinal nerve in the intervertebral foramen in the cervical region?
1/5th
What is the size of the spinal nerve in the intervertebral foramen in the thoracic region?
1/12th
What is the size of the spinal nerve in the intervertebral foramen in the lumbar region?
1/3rd
What is the shape of the spinal canal in the cervical region?
triangular (largest region)
What is the shape of the spinal canal in the thoracic region?
Oval (smallest region)
What is the shape of the spinal canal in the lumbar region?
triangular
Where is the most common site for cord compression because the spinal cord is the widest in this region?
Cervical
What are the primary spinal curves known as?
kyphosis
What are the secondary spinal curves known as?
lordosis
