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Anatomy

Back

QuestionAnswer
this embryological structure becomes the brain and spinal cord neural tube
this is the only remnant of the notochord nucleus pulposus
These are TRUE BACK muscles: (REMS): Rotatores, Erector spinae (Longissimus, iliocostalis, spinalis), multifidus, semispinalis
true back muscles are innervated by... posterior rami
true back muscles are derived from... somites
everything except true back muscles and head are derived from this embryological structure and is innervated by anterior rami lateral mesoderm
trapezius is innervated by CN 11 (spinal accessory nerve)
Latissimus Dorsi is innervated by: thoracodorsal nerve
this nerve innervates the skin and true back muscles posterior rami
muscle is derived from this embryological structure myotome
this is the last ligament that is touched during a spinal tap (lumbar puncture) ligamentum flavum
this most extrinsic back muscles are: trapezius, latissimus dorsi
name the three layers of the neural tube from innermost to outermost neurepithelial layer, mantle layer, marginal layer
describe the spinal cord development the neural tube thickens and cells in the mantle layer differentiate into alar (forms posterior horn and sensory neurons) and basal (forms anterior horn and motor neurons) plates. the Intermediate horn forms between the alar and basal plates
this surrounds the neural tube and notochord to become the vertebrae and ribs clerotomal mesenchyme
this is a defect in which the spinous process does not form and the top of skin is covered by hair spina bifida
this type of spina biffida occurs when the meninges are outside of the vertebral column meningocele
this type of spina bifida occurs when the spinal cord and meninges have herneated out meningomyelocele
this type of spina bifida occurs when the neural tube is folded wrong. this does not result in a viable fetus Rachischisis
true/false: in an embryo, the spinal cord runs the full length of the vertebral canal. true
at six months of gestation, the spinal cord ascends to this vertebral level S1
in a newborn, the spinal cord runds up to this level L2-L3
in a normal adult, the spinal cord runds up to this vertebral level L1-L2
Created by: aferdo01