Axial Skeleton: Vertebrae Flashcards
The vertebral canal is where the ____ runs
Spinal cord
Dorsal or ventral projections from the vertebrae
Spinous process
Lateral projections of the vertebrae
Transverse process
Vertebrae “connected” by
Disks (cartilage)
5 regions of the vertebral column
C- cervical T- thoracic L- lumbar S- sacral Cd- coccygeal or caudal
There is no disk between
C1 and C2
C1 is also called the
Atlas
C2 is also called the
Axis
Vertebrae that articulate w ribs
Thoracic vertebrae
Vertebrae that articulates w the tuber sacrale of ilium
Sacral vertebrae
The outer rings of a vertebrae disk
Annulus fibrosus
The inner portion of a vertebrae disk
The nucleus pulposus
When the central part of a disk dries out, the outer portion cracks or tears, movement causes a split of outer portion and inner pushes out
Herniated disk
Number of ribs = number of
Thoracic vertebrae
Ventral portion of the ribs is made of
Why?
Cartilage (costal cartilage)
Helps w expanding of chest when breathing
True ribs
False ribs
Floating ribs
True: wrap around, attach to sternum
False: don’t connect, joins w ones near it
Floating: don’t connect, stick out
The sternum is made of individual _______
Sternebrae (have cartilage in between) fuse together w age
Typically how many sternebrae
7-8
1st, most cranial, sternebrae is called the
Manubrium
Last, most caudal, sternebrae is called the
Xiphoid it xiphoid process
# of vertebrae in: dog/cat C_ T_ L_ S_
C7, T13, L7, S3
# of vertebrae in: Cattle C_ T_ L_ S_
C7, T13, L6, S5
# of vertebrae in: Horse C_ T_ L_ S_
C7, T18, L6, S5
Lateral projection of C2 (axis)
Dens
