Test 5: Spine Flashcards
(43 cards)
How many articulating vertebrae?
24
How many fused vertebrae?
9
How many cervical, thoracic, lumbar, sacrum, and coccyx?
- 7 Cervical (neck) vertebrae
- 12 Thoracic (chest) vertebrae
- 5 Lumbar (lower back) vertebrae
- 5 Sacrum (posterior pelvic girdle) vertebrae
- 4 Coccyx (tail bone) vertebrae
What kind of curve does your cervical have?
Lordotic
What kind of curve does your thoracic have?
Kyphotic
What kind of curve does your lumbar have?
Lordotic
What is the purpose of the curvature?
- Increase strength
* Absorption of forces
Increased posterior concavity of lumbar & cervical curves
Lordosis (bent backwards)
Increased anterior concavity of thoracic curve
Kyphosis
Reduction of normal lordotic curve, resulting in a flat-back appearance
Lumbar kyphosis
Lateral curvatures or sideward deviations of spine
Scoliosis
How many pairs of ribs do you have?
12
How many pairs are true ribs and where do they attach?
7
Sternum
How many are false ribs and where do they attach?
5
3- Sternum
2- Free
C1=
C2=
Atlas
Axis
What is the most mobile articulation of the spine?
Atlanto-axial joint
What kind of joint is the atlanto-axial joint?
Pivot
Central gelatinous, pulpy substance
Nucleus pulposus
Vertebral Column Flexor Muscles:
- Rectus Abdominis
- External Oblique
- Internal Oblique
- Psoas Major (With origin fixed)
- Iliacus (with origin fixed)
Origin of rectus abdominis:
Pubic crest, pubic symphysis
Insertion of rectus abdominis:
Cartilage of 5th-7th ribs and xiphoid process
Action of the rectus abdominis:
- Flex the vertebral column
* Tilt pelvis posteriorly
Origin of the external oblique:
External surfaces of 5th -12th ribs
Insertion of the external oblique:
Anterior part of the iliac crest, abdominal aponeurosis to linea alba