How to divide segments? Anterior View C2 Anterior roct(AR Posterior View C2 Posterioroo(Pp用 C3A Aradhnoid Ca PR Arachnoid CA AR C4PR AR The spinal segment refers to a region a pair of spinal nerves arises (cervical=8;thoracic=12;lumbar=5;sacral=5;Coccygeal=1)
How to divide segments? (cervical=8; thoracic=12; lumbar=5; sacral=5; Coccygeal=1) The spinal segment refers to a region a pair of spinal nerves arises
Each spinal segment has the dominant area Cervical-neck,shoulder,outer arms,hand Thoracic-inner arm,chest, abdomen Lumbar-front of leg and foot Sacral-back of leg and foot (dermatomes) Clinical Note: For determination the level of extradural anesthesia
Each spinal segment has the dominant area (dermatomes) Cervical- neck, shoulder, outer arms, hand Thoracic- inner arm, chest, abdomen Lumbar- front of leg and foot Sacral- back of leg and foot Clinical Note: For determination the level of extradural anesthesia
The relationship between the segments of spinal cord and vertebral bodies Spinal Cord Vertebral Bodies C1-4 C1-4 C5-T4 C4-T3 T5-8 T3-6 T9~12 T6-9 L15 T10-12 S15,C0 L1
Spinal Cord Vertebral Bodies C1-4 C1-4 C5-T4 C4-T3 T5~8 T3-6 T9~12 T6-9 L1~5 T10 -12 S1~5, Co L1 The relationship between the segments of spinal cord and vertebral bodies
Two enlargements Spinal cord Cervical enlargement Cervical (C4-T1) Lumbosacral enlargement (L2-S3) umb3 Lumba Spinal narves
Two enlargements Cervical enlargement (C4-T1) Lumbosacral enlargement (L2-S3)
Why do we have two enlargements in Cervical cord Cervical the spinal cord? Thoracic cord The increased numbers of Thoracic motor and sensory neurons to provide the origins of the nerves of upper and lower extremities. ord Lumba Spinal nerves
Why do we have two enlargements in the spinal cord? The increased numbers of motor and sensory neurons to provide the origins of the nerves of upper and lower extremities