Vertebral Column And Back Muscles Flashcards
Distinguishing factor of all cervical vertebrae?
Bifid Spinous process
Transverse Foramen
Horizontal Articular Processes
Distinguishing factor of CV1 (Atlas)
Has no body or spinous process
Distinguishing factor of CV2 (Axis)
Odontoid Process
Distinguishing factor of CV7
First Spinous Process (Vertbra Prominens)
How many cervical vertebra are there?
7 cervical vertebra
How many Lumbar vertebrae are there?
5 Lumbar Vertebrae
How many sacral and coccygeal segments are there?
5 sacral and 4 coccygeal segments
How many thoracic vertebrae are there?
12 thoracic vertebrae
What actions are involved in the upper trap?
Lat flexion of head
Elevate and retract the scapula
Rotate glenoid fossa superiorly
What actions does the latissimus Dorsi aid in?
Extension, Adduction, and medial rotation of the humerus
What are the actions of the SPS and SPI muscles?
Aid in inspiration
What are the actions of the transversospinal muscles?
Rotate the body to the opposite direction
Extend the vertebral column
What are the actions of Rhomboid Major and Minor?
Retract Scap
Rotate scap to depress glenoid fossa
What are the actions of the erector spinae muscles?
Unilaterally-bend to the same side
Bilaterally-extend the vertebral column
What are the attachments for the Levator Scapulae?
Medial Border of Scapulae above the spine
Transverse Process CV1-4
What are the attachments for the Rhomboid Minor muscle?
Spinous process of CV7-TV1
Medial border of scapula
What are the attachments for the Rhomboid Major muscle?
Spinous process of TV2-TV5
Medial border of scapula
What are the attachments for the Serratus Posterior Inferior muscle?
Spinous process of TV11-LV2
Ribs 8-12
What are the attachments of the Serratus Posterior Superior muscle?
Spinous Process CV7-TV3
Ribs 2-4
What are the attachments for the iliocostalis muscle?
Iliac Crest or transverse processes
Ribs several layers higher
What are the attachments for the Latissimus Dorsi?
Thoracolumbar fascia TV6-LV5
Iliac Crest
Intertubercular groove of the Humerus
What are the attachments of the Longissimus muscle?
Spinous Process
Transverse process several level higher
What are the attachments for the Multifidus muscle?
Transverse Process
Spinous process a few levels higher
What are the attachments of the Rotatores muscles?
Transverse process
Spinous process at same or 1 level higher
What are the attachments for the semispinalis muscle
Transverse process
Spinous process several levels higher
What are the attachments for the spinalis muscle?
Spinous process of lumbar and low thoracic
Spinous process several levels higher
What are the attachments for the splenius muscle?
Spinous process CV7-TV6
Transverse Process CV1-4 or mastoid process
What are the attachments for the Trapezius muscle?
Thoracolumbar fascia
Senior nuchal line
Clavicle
Acromian and spine of scapula
What are the nerve innervations for the Erector Spinae muscles?
Dorsal Rami
What is the artery supply for the Trapezius muscle?
Transverse CV Artery
What distinguishes lumbar vertebrae?
Large bodies
Block-like spinous process
What do the spinous processes look like in thoracic vertebrae?
Long, sharp, oblique
What is a distinguishing factor of articular processes in thoracic vertebrae?
Vertical-allows for less movement and more stable
What is kyphosis?
Excessive curvature in thoracic region
What is lordosis?
Excessive curvature in lumbar region
What is lumbarization?
SV1 is separated of sacrum
What is sacralization?
LV5 is fused to sacrum
What is scoliosis?
Lateral curvature of spinal column
What is the action of levator scapulae?
Elevate scapula
What is the artery supply for erector spinae muscles?
Intercostal arteries
He artery supply for levator scapulae?
Transverse CV artery
What is the artery supply for Rhomboid Major and Minor?
Transverse CV. Artery
What is the artery supply for splenius muscle?
Intercostal arteries
What is the artery supply for SPS and SPI muscles?
Intercostal arteries
What is the artery supply for the latissimus Dorsi?
Thoracodorsal branch of subscapular artery
What is the artery supply for the transversospinal muscles
Intercostal arteries
What is the nerve innervation for levator scapulae
Dorsal scapular nerve C3,4
What is the nerve innervation for splenius muscle?
Dorsal Rami
What is the nerve innervation for SPS and SPI muscles?
Intercostal nerves
What is the nerve innervation for the latissimus Dorsi?
Thoracodorsal Nerve (C 6,7,8)
What is the nerve innervation for the transversospinal muscles?
Dorsal Rami
What is the nerve innervation of Rhomboid Major and Minor?
Dorsal Scapular Nerve (C5)
What is the outer and inner portion of the intervertebral disc called?
Outer-annulus fibrosis
Inner-Nucleus Pulposus
What is the percent of water in the nucleus pulposus at birth and at age 70
88% at birth; 70% at age 70
What is the significance of the lumbar triangle?
Potential hernia site
What is the triangle of auscultation used for
Listening to the lungs
What landmark is used to find LV4?
Iliac crest
What ligament connects the adjacent spinous processes?
Intraspinous ligament
What ligament connect the adjacent laminae?
Ligamentum flavum
What ligament runs the entire length of the posterior portion of the vertebral bodies?
Posterior longitudinal ligament
What ligament runs the entire length of vertebral column along spinous process?
Supraspinous ligament
What ligament runs the full length of the anterior portion of the vertebral column?
Anterior longitudinal ligament
What makes up the lumbar triangle?
Medially: latissimus
Laterally: ext. oblique
Inferior: Iliac crest
What makes up the triangle of auscultation?
Medially: trapezius
Laterally: scapula
Inferiorly: Latissimus
What nerve innervates the trapezius muscle?
Spinal accessory N (CN XI)
What passes through the transverse Foramen of CV!-CV6?
Vertebral Artery
What structure houses the spinal nerves?
Intervertebral Foramen
What three muscles make up the erector spinae?
Spinalis
Longissimus
Iliocostalis
That three muscles make up the transversospinal muscles?
Rotatores
Multifidus
Semispinalis
What vertebral level does the spinal cord end at in adults?
LV1-2
What vertebral level does the spinal cord end at in newborns?
LV3, maybe 4
How much of the body’s weight does the body of a spinal segment support?
75-80%
How much of the body’s weight do the articular processes of a spinal segment support?
20-25%