1 Chapter 12 Central Nervous System Spinal Cord

Slides:



Advertisements
Similar presentations
CENTRAL NERVOUS SYSTEM Hemakumar. NERVOUS SYSTEM CNSPNS Brain Spinal Cord Somatic-Voluntary Autonomous - Involuntary.
Advertisements

Spinal Cord, Spinal nerves & Reflexes
WARM UP 3/17 1. What is a Schwann cell? 2. What are interneurons? 3. What are the 2 divisions of the autonomic? 4. What are the 3 meninges in order? 5.
The Spinal Cord.
Objectives To identify the roles of the three types of neurons and the transmission pathway of a reflex arc. To analyze case studies (patient symptoms)
Spinal Cord (Handout) prof. aza. Figure 04a Spinal Cord The spinal cord (Figure 04a) lies along the middorsal line of the body It has two main functions:
The Nervous System. Functions of the nervous system include:  coordination of the physical movements of the body  corresponding to the action of the.
SC.912.L  What are the major parts of the spinal cord?
Spinal Cord. 42 cm long (17 inches) and 1.8 cm thick 42 cm long (17 inches) and 1.8 cm thick Provides two way conduction pathway to and from the brain.
Peripheral Nervous System (PNS). PNS  Cranial nerves (12 pairs)  Spinal Nerves (31 pairs)
Nervous System Axons Take information away from the cell body Dendrites Bring information to the cell body.
Week 11 The Spinal Cord.
Human Anatomy, 3rd edition Prentice Hall, © 2001 The Nervous System: Spinal Cord and Spinal Nerves Chapter 9b.
Neurophysiology- Terminology. Terms commonly used in Neurophysiology Neuron / Nerve fiber Afferent & Efferent Antidromic Vis a vis Orthodromic Centre,
Chapter 7.  Central nervous system (CNS)  Brain  Spinal cord  Peripheral nervous system (PNS)  Nerves outside the brain and spinal cord.
The Human Nervous System
Spinal Cord Function and Protection
17.4 The Peripheral Nervous System
Chapter 2 (C): The Nervous System
The Nervous System Unit III Module 10.
Spinal Cord- Structure and Function Pages
Chapter 5: An-Najah National University Anatomy and Physiology 1
The Nervous System- Nervous Tissue
Week 11 The Spinal Cord & PNS.
THE NERVOUS SYSTEM.
Introduction to the Nervous System and Nerve Tissue
Unit 5 Nervous System.
The spinal cord. A. Spinal nerves connect the spinal cord with the periphery. Each spinal nerve has a ventral root containing axons of efferent neurons.
Spinal Nerves and Reflex Arc
The Nervous System.
Spinal Cord, Reflex arc and Spinal nerves
THE NERVOUS SYSTEM Xiaoming Zhang Department of Human Anatomy
Spinal reflexes The reflex arc.
The Human Spinal Cord Text Page 393.
Nervous System Biology.
Spinal Cord and Spinal Nerves
Central Nervous System
Nervous System Chapters 8 and 9.
Neurons.
Nervous System By the end of the lesson you should be able to
“How does such a tiny brain affect Homer?”
Nervous Tissue.
Functional Classification of Neurons
Spinal Cord, Spinal nerves & Reflexes
Chapter 17-1: The Nervous System
Nervous.
CNS Gray matter: cell bodies and short nonmyelinated fibers.
Nervous System.
Organization of the Nervous System
Animal Control Systems
Knowledge Organiser – Homeostasis and the Human Nervous System
THE NERVOUS SYSTEM.
Fundamentals of the Nervous System Part 2
The Central Nervous System
The Nervous System.
Nervous System.
Nervous System Anatomy
Notes Ch. 10a Nervous System 1
Section D: Structure of the Nervous System & Autonomic Nervous System
AUTONOMIC NERVOUS SYSTEM NOTES
Quick Lesson – Nervous System
NERVOUS SYSTEM Dr Iram Tassaduq. NERVOUS SYSTEM Dr Iram Tassaduq.
Receiving Information Responding to Information
The Nervous System The body’s nervous system is divided into two parts: Central Nervous System Peripheral Nervous System.
Peripheral Nervous System
The Nervous System! Chapter 9.
Nervous System Supplemental Questions
Nerve Pathways.
Nervous System: WOOOOHOOOO
The Nervous System! Chapter 9.
Presentation transcript:

1 Chapter 12 Central Nervous System Spinal Cord

2 Spinal cord dorsal view figure 12.29, pg. 467

3 Spinal cord

Gray matter of spinal cord 4 Gray matter of spinal cord Dorsal horns – associated with afferent, sensory nerve impulses from receptors, C1-L5 neuron cell bodies bundled in dorsal root ganglion Ventral horns – associated with efferent, motor nerve impulses to effectors, C1-L5 neuron cell bodies are in gray matter of ventral horn Lateral horns – only in in T1-T12 region

Central nervous system consist of the brain and the spinal cord. Afferent peripheral (?)nerves bring nerve impulses from the receptors (?) to the spinal cord. Afferent nerve tracts (?) in the spinal cord take the nerve impulses to the brain Bundles of nerve fibers (axons) in the peripheral nerve system are called nerves- Bundles of nerve fibers in the CNS are called tracts

Nerves and tracts are bundles of axons 6 Spinal Cord Nerves and tracts are bundles of axons Somewhere near one end of the nerve there will be the cell bodies of the nerve. Often these cell bodies will also be bundled together. If the bundles of cell bodies are in the PNS they’re called ganglions If the bundles of cell bodies are in the CNS they’re called nuclei. (center of)

7 Spinal cord Motor neurons are efferent - descend from the brain - synapse and go to the spinal cord, synapse and then out to the effectors (muscles or glands) Sensory neurons are afferent, go from the receptor to the spinal cord synapse, ascend up the cord and synapse at the brain