Lecture 13 Nervous System finish (CNS and all PNS)

Lecture 13 Nervous System finish (CNS and all PNS) -...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Anatomy of the Nervous System II Angela Black, DVM, PhD Department of Animal and Avian Sciences University of Maryland, College Park CNS ~ Spinal Cord caudal continuation of the medulla oblongata long column of nervous tissue extending from the brain to the level of the last few lumbar vertebra, where it tapers off the vertebral canal below the level where the spinal cord ends is occupied by a bundle of descending spinal nerves it is made up of gray matter which forms a butterfly shape in the middle of the cord and is completely surrounded by white matter 1. Anterior (Ventral) Median Fissure 7. Posterior (Dorsal) Median Sulcus 2. White Matter 8. Central Canal 3. Ventral Root (Motor) 9. Dorsal Gray Horn (Sensory) 4. Gray Matter 10. Gray Commissure 5. Dorsal Root Ganglia 11. Ventral Gray Horn (Motor) 6. Dorsal Root (Sensory) 12. Spinal Nerve Cross-sectional Anatomy of the Spinal Cord white matter ~ found in the periphery of the spinal cord where the density of myelinated fiber tracts is great gray matter ~ found in the central regions of the spinal cord where the density of neuronal cell bodies is great dorsal root ~ spinal nerve contains incoming or afferent fibers carrying sensory information from the periphery ventral root ~ spinal nerve contains outgoing, efferent fibers that carry information destined to control motor or glandular function Dorsal root ganglia ~ sensory neurons along the dorsal root Spinal nerve...
View Full Document

Page1 / 36

Lecture 13 Nervous System finish (CNS and all PNS) -...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online