Blood Vessels | Myotomes/Dermatomes | Muscles of the Back | Vertebral Column |
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C) Capillaries
These are the smallest blood vessel of the body:
A) Venules B) Arterioles C) Capillaries D) Venous sinus |
D) shoulder elevation
The only two myotomes innervating actions in the shoulder are C4 for shoulder elevation and C5 for shoulder abduction
Myotome C4 is responsible for the following action:
A) Shoulder depression B) Shoulder abduction C) Shoulder adduction D) Shoulder elevation |
Erector spinae muscles
Which muscle group is called the "long muscles of the back"?
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The body
The weight bearing portion of vertebra in known as:
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A) Tunica Media
What is the muscular layer of a blood vessels:
1) Tunica Media 2) Tunica Externa 3) Tunica Intima 4) Tunica Interna |
B) S1
From the posterior look the only two dermatomes down the legs are S1 and S2 (S1 lateral and S2 medial) and S2 does not innervate any toes. Toes are innervated by L4 (great toe) and L5 (the other 3)
Pain radiating down the leg to the small toe could suggests a herniated disk pinching the S1 nerve root in the spine; which dermatome is involved?
A) S2 B) S1 C) L4 D) L5 |
Trapezius, Latissimus dorsi, Levator scapulae & rhomboids
Name the 4 superficial extrinsic back muscles?
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Lumbar Region
This region of the vertebral column is the only section that has a mammillary process on it's vertebra:
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C) Equatorial branches and Nutrient artery
Which artery supplies blood to the vertebral body of the lumbar region?
A) Posterior branch of lumbar artery. B) Nutrient arties C) Equatorial branches and Nutrient artery D) Lumbar artery |
D) Umbilical region
Dermatome T10 innervates what part of the axial skeleton?
A) Pectoral region B) Cervical region C) Lumbar region D) Umbilical region |
They connect the axial skeleton (vertebral column) with the superior appendicular skeleton (pectoral girdle and humerus)
What is the main function of the superficial extrinsic back muscles?
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Kyphosis
When viewing the vertebral column posteriorly, what is the abnormal convex curvature of the thoracic vertebrae causing a "hump back" called?
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A) Vertebral venous Plexus
What provides venous drainage for the individual vertebra in the spinal column?
A) Vertebral venous plexus B) Basivertebral vein C) Lumbar artery D) Ascending lumbar Vein |
A) Hip flexion
Myotome L2 innervates a group of muscles responsible for which action.
A) Hip flexion B) Knee flexion C) Hip extension D) Knee extension |
Maintain posture and control movement of the vertebral column
What is the main function of the intrinsic muscles of the back?
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False.Transverse foramen are only found in cervical vertebrae.
True or False:
Cervical, thoracic and lumbar vertebrae have transverse foramen that act as a passageway for the vertebral artery and vein. |
C) Raynaud's
What type of rare disorder is associated with brief episodes of vasospasm of arties?
A) Vasculitis B) Hypertension C) Raynaud's D) Aneurism |
C) 31 pairs of spinal nerves
How many pairs of spinal nerves exist in each side of the vertebral column?
A) 34 B) 33 C) 31 D) 30 |
Lordosis
What type of exaggerated curvature would result from weak abdominal muscles and tight back muscles in the lumbar region?
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True
True or False:
The pedicle connects the lamina to the vertebral body. |