Week 3 Flashcards
Characteristics of a Cervical vertebrae
Body: small, oval, curved faces
Spinous process: Long; split-tip; points inferiorly
Vertebral foramen: large
Characteristics of a Thoracic vertebrae
Body: medium and heart-shaped
Spinous process: Long, slender; not split; points inferiorly
Vertebral foramen: Medium
Characteristics of a Lumbar Vertebrae
Body: Massive, oval, flat-faces
Spinous process: Blunt, broad; points posteriorly
Vertebral foramen: Small
Rectus abdominis OIA
Origin: Pubis
Insertion: xiphoid process and costal cartilages
Action: Flex trunk, compress abdomen
External oblique OIA
Origin: Lower 8 ribs
Insertion: iliac crest and linea alba
Actions: Bilaterally - flex trunk, compress abdominals
Unilaterally - lateral bending, rotation to opposite side
Internal oblique OIA
Origin: iliac crest, thoracolumbar (TL) fascia
Insertion: 10-11th ribs and abdominal aponeurosis
Action: Bilaterally - flex trunk, compress abdominal
Unilaterally - lateral bending, rotation to same side
Transverse abdominis OIA
Origin: iliac crest, TL fascia, last 6 ribs
Insertion: abdominis aponeurosis and linea alba
Actions: Compression of the abdomen
Trunk Motions
Flexion
Extension
Hyperextension
Lateral Bending
Rotation
Number of ribs (Pair and individual)
Pair - 12
Individ - 24
Type of ribs
7 True ribs (1-7)
3 False ribs (8-10)
2 floating ribs (11-12)
Transversospinalis OIA
Origin: TPs (Transverse processes)
Insertions: SP of vertebra above
Actions: Bilaterally - extend neck and trunk
Unilaterally - rotate neck and trunk to opposite side
Function of erector spinae
straighten the back and allow for side to side rotation
Location of erector spinae
Each side of the vertebral column
Location of interspinales
cervical and lumbar regions
Location of intertransversarii
cervical and lumbar regions of the spine
