L1 Introduction to Anatomy Flashcards
Coronal movement
posterior/anteror and Dorsal (back)/ventral (tummy)
Sagittal movement
Medial/Lateral
Transverse movement
Superior/Inferior and Caudal/Cranial
Flexion/Extension
Angle of joint decreases (moves in sagittal plane)
Angle of joint increases (moves in sagittal plane)
Abduction/Adduction
Away from midline (moves in coronal plane)
Towards the midline (moves in coronal plane)
Medial Rotation
Rotation of joint towards midline
Lateral Rotation
Rotation of joint away from midline
Pronation/supernation
only in relations to arms (sup = up)
True Rib
Rib - Costal Cartilage - Sternum 1-7
False Rib
8-12
11/12 are floating
Thoracic cage description
Irregularly shaped osseocartilaginous cylinder -> convex formed by sternum, ribs and costal cartilage
Thoracic cage made out of
Vertebrae and Intervertebral disc
Ribs
Sternum
Costal Cartilages
Thoracic cage function
Protection of viscera
Muscle attachment
Relations: Pectoral girdle (Clavicle/Scapula)
Thoracic cage boundaries
Roof: Pleural membrane over apex of lungs
Floor: Diaphragm
Walls: Ribs, Sternum, Vertebrae and intercostal muscles
Superior thoracic aperture
Consists of body of vertebra TI posteriorly, medial margin of rib I on each side, manubrium anteriorly
Superior margin of manubrium is
same horizontal plane as intervertebral disc between vertebrae TII and TIII
Features of a typical vertebra
Heart-shaped vertebral body -> equal dimensions in transverse/anterior directions + long spinous process
Vertebral foramen is circular (generally) and the laminae are broad/overlap with vertebra below
- Superior articular processes are flat -> articular surfaces face almost directly posteriorly
- Inferior articular processes project from laminae -> articular facets face anteriorly
Transverse processes: club-shaped + project posterolaterally + inferior
Heart-shaped vertebral body
equal dimensions in transverse/anterior directions + long spinous process
Vertebral foramen
circular (generally) and the laminae are broad/overlap with vertebra below
Superior articular processes
flat -> articular surfaces face almost directly posteriorly
Inferior articular processes
project from laminae -> articular facets face anteriorly
Transverse process
club-shaped + project posterolaterally + inferior
Typical/Atypical ribs
3-9
1-2, 10-12
Rib head
expanded + usually with 2 articular surfaces separated by crest (smaller superior surface -> interior costal facet of vertebra body above) / (larger inferior facet -> superior costal facet of own vertebra)