Flashcards in Exam III Deck (148)
Blood supply to individual vertebra is typically _______.
Once inside the intervertebral foramen, the vertebral artery splits into these three branches:
Anterior Branch (Prelaminar)
Posterior Branch (Postcentral)
Neural branch (neurospinal)
What does the anterior branch supply blood to?
The posterior aspect of the vertebral bodies, and anterior aspect of the spinal cord and anterior ligaments inside the spinal canal
What does the posterior branch supply blood to?
The posterior arch, posterior part of the spinal cord and ligaments in the posterior spinal canal
What does the neural branch supply blood to?
The lateral aspects of the spinal cord, spinal nerve and nerve roots
The 3 main arteries that go from the head/neck downward to supply the main portion of the spinal cord:
2 Posterior spinal arteries
1 Anterior spinal artery
The 2 posterior arteries and 1 anterior spinal artery come off of the _______ arteries just before they unite to form the _______ artery
The anterior spinal artery comes from both _____ arteries, unites in front of the _____ ____, and runs caudally through the ______ _____ ____ of the cord.
ventral median fissure
A branch off the anterior spinal artery, found between T-9 and T-12
Great Radicular Artery of Adamkiewicz
What does the great radicular artery of adamkiewicz supply blood to?
The inferior thoracic vertebrae, superior lumbar vertebrae, lumbarsacral enlargement of the spinal cord
Anterior spinal artery also supplies blood to:
The lumbar segmental arteries, lateral sacral artery, and blood of the sacrum and coccyx
The posterior spinal artery arises from the ______ ____, adjacent to the ______ ______. It supplies the ______ and ______ posterior columns of the spinal cord.
The two major venous plexus (group of veins) that leave the vertebra:
Internal venous plexus
External venous plexus
Where is the internal venous plexus located?
The inside of the spinal canal
Where is the external venous plexus located?
Outside the vertebral column
The internal venous plexua is also called the (2 different names)
Epidural venous plexus or the Batson's Plexus
Both the internal and external venous plexus have an _____ and a _______ part
Vein inside the vertebral body. Part of the anterior internal venous plexus
The opening in the basivertebral vein inside the vertebral body is called:
Hanh's venous Cleft
3 Classes/types of joints within the spinal column
Type of joint where 2 bones are connected by connective tissue of hyaline cartilage, with a lack of motion
Type of joint formed when 2 bony surfaces are united by cartilage or a disc. Many SLIGHT motions
Type of joint with an articular surface covered with articular cartilage, and connected by ligaments lined by a synovial membrane.
What type of joint is most common in the spine and body?
Subclassification of the fibrous joints in the spine is called the ________ ______. Formed when 2 bones are united by an ___________ _______.
2 subclassifications of cartilaginous joints
Subclassification of cartilaginous joints. A temporary joint where the cartilage later changes into bone itself (Ex- epiphisial plates)
Subclassification of cartilaginous joints: 1 bony surfaces connected by a disc or fibrocartilage. (Ex- Pubic symphasis)
3 subclassifications of synovial joints
Arthrodial/Gliding/Articulatio Plana joints