Chapter 4 Flashcards
How is a dermatome map used?
Doctors use it to diagnose the source of nerve pathologies
List the 4 parts of a synovial joint:
Articular surface covered in hyaline cartilage, articular cavity, well-former capsule with surrounding ligaments, and a synovial membrane, which secrete synovial fluid
What is the function of the dorsal nerve root
Provides sensory function
What is the function of the ventral nerve root
Provides motor function
Name the two regions of an intervertebral disc, and describe their functions:
Outer layer: _______
Inner later: ________
Outer layer: anulus fibrosis
Inner layer: nucleus pulposus
What is the biomechanical function of the intervertebral disc?
It acts as a biological shock absorber and a pivot point for motion
List, in order from superficial to deep, the meninges of the spinal cord:
Dura mater, arachnoid, pia mater
_____ connect bone to bone
Ligaments
The _____ ligament system holds system holds individual vertebrae together.
Intrasegmental
The _____ ligament system holds system holds many vertebrae together.
Intersegmental
____ _____ - connects the laminae of the vertebrae and protects the neural elements. The strongest of the spinal ligaments, it forms the posterior wall of the spinal canal
Ligamentum flavum
____ ligaments - run from the base of one spinous process to another
Interspinous
_____ ligament- runs along the posterior portion or distal tips of the spinous processes.
Supraspinous
Spinal canal:
It contains the spinal cord and it’s coverings, and is channel created by the sum of the vertebral formina
Spinal cord:
It is the inferior portion of the central nervous system, and is covered and protected by 3 concentric layers of menings