Spine anatomy Flashcards
How many vertebrae are there?
33
What are the sections of the spine?
Cervical Thoracic Lumbar Sacral Coccygeal
How many vertebrae are in the cervical spine?
7
How many vertebrae are in the thoracic spine?
12
How many vertebrae are in the lumbar spine?
5
How many vertebrae are in the sacral spine?
5
How many vertebrae are in the coccyx?
4
How many curves are there in the spine?
4
Name the curves of the spine
Cervical lordosis
Thoracic kyphosis
Lumbar lordosis
What is C1 called?
Atlas
What is C2 called?
Axis
What is the bit that C2 has that C1 doesn’t?
Odontyoid process
What is the first palpable cervical vertebrae?
C7
Where is the pedicle of a vertebrae?
The “foot”
Attaches to the body
What is the bit that is palpable on the spine?
Spinous process
What is the bit beside the spinous process called?
Transverse process
Where is a facet joint?
Created by the superior and inferior facet articulations of the vertebrae
What kind of joints are facet joints?
Synovial joints
What disease can develop in the facet joints?
Osteoarthritis
What are the two layers of the intervertebral discs?
Annulus fibrosus
Nucleus pulposus
What can happen if the nucleus pulposus escapes from the annulus fibrosis?
prolapsed disc
What is the nucleus pulposus made of?
Gelatinous material
Where is the intraspinous ligament?
Between the body of the spinous processes of each vertebrae
Where are the supraspinous ligaments?
Between tips of the spinous processes
Where are the ligamentum flavum?
Attaches the vertebral lamina together
How far do the anterior and posterior longtitudinal ligaments run?
The whole length of the vertebral column
What are the 3 types of muscle in the spine?
Superficial/extrinsic
Intermediate
Deep
What is the origin and insertion of the intermediate muscles?
Spinous process and insert to ribs.
Give an example of an intermediate spinal muscle
Serratus inferior
What is the function of the superficial muscles of the spine?
Movement of shoulder and upper limb
What are the 5 superficial muscles of the spine?
Trapezius
Lattissimus dorsi
Rhomboid minor and major
Levatus scapularis
Where is the trapezius?
Originates at the spinous process as far as T12
Inserts to the occiput and the spine of the scapula
What is the nerve innervation to the trapezius?
CN XI
Accessory nerve
What is the function of the trapezius?
Elevates, depresses and retracts scapula
What is the function of latissimus dorsi?
Adducts, extends and internally rotates the humerus