L12. The Back + Vertebral Column Flashcards
Vertebral Body:
Vertebral Body: weight-bearing part of the vertebra. Size increases inferiorly (lumbar vertebrae are very large!)
Vertebral Arch:
Vertebral Arch: forms the lateral and posterior parts of the vertebral foramen
-Pedicles: connect the vertebral body to the transverse processes
-Lamina: connect the transverse processes and spinous processes
Vertebral Foramen:
Vertebral Foramen: where the spinal cord passes through
Spinous Process:
Spinous Process: centred posteriorly at the point of the arch
Superior + Inferior Articular Processes:
Superior + Inferior Articular Processes: form joints between one vertebra and its superior and inferior counterparts. The articular processes are located at the intersection of the laminae and pedicles.
Curvatures:
Cervical: Convex Anteriorly, Secondary Curve
Thoracic: Concave Anteriorly, Primary Curve
Lumbar: Convex Anteriorly, Secondary Curve
Sacral/Coccygeal: Concave Anteriorly, Primary Curve
of Vertebrae:
7 Cervical Vertebrae
12 Thoracic Vertebrae
5 Lumbar Vertebrae
5 (Fused) Sacrum Vertebrae
3-4 (Fused) Coccyx Vertebrae
“Come To Lick Some Cock”
7,125,534
Annulus Fibrosus:
-Outer fibrous region of the intervertebral disc
-Consists of annular (ring-shaped) layers of collagen in an orthogonal arrangement = very strong (can resist compression, tension, rotation)
Nucleus Pulposus:
-Found in the centre of the intervertebral disc (contained by the annulus fibrosus)
-Jelly-like & deformable ball composed mainly of water
-Acts as a pivot point between 2 vertebrae and absorbs compression forces
The Nucleus Pulposus is going to herniate/protrude out. Most likely to occur at Lumbar region.
5 Ligaments of the Vertebral Column:
Superficial Muscles of the Back:
Intermediate Muscles of the Back:
Deep Muscles of the Back:
SLIM!
Neural Supply:
