Spinal Cord Physiology - PowerPoint PPT Presentation

Loading...

PPT – Spinal Cord Physiology PowerPoint presentation | free to view - id: 78fac1-ZDFlN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Spinal Cord Physiology

Description:

SC.912.L.14.28 What does the spinal cord do? White matter nerve impulse conduction Grey matter receives and integrates incoming and outgoing information Axons ... – PowerPoint PPT presentation

Number of Views:74
Avg rating:3.0/5.0
Slides: 10
Provided by: Lynne251
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Spinal Cord Physiology


1
Spinal Cord Physiology
  • SC.912.L.14.28

2
Essential Question
  • What does the spinal cord do?

3
Functions
  • White matter nerve impulse conduction
  • Grey matter receives and integrates incoming
    and outgoing information

4
Descending Tracts
  • Axons within the descending tracts control the
    smooth muscles of internal organs and the
    skeletal muscles of the arms and legs.
  • Neural signals follow specific pathways. In the
    case of the descending tracts axons from the
    brain synapse with cell bodies in the spinal cord
    which then send impulses out to the rest of the
    body.

5
Ascending Tracts
  • Sensory signals from the skin, extrmeties and
    internal organs are carried via pahtways in the
    ascending tracts.
  • Most these signals are relayed to the brain. Some
    activate reflexes which are controlled by
    interneurons in the spinal cord and are not
    addressed by the brain.

6
Spinal Cord Segments
  • Each spinal cord segment marks where spinal
    nerves emerge from the cord to connect with
    specific regions of the body.

7
Regions of Control
  • Cervical spinal nerves (C1 to C8) control signals
    to the back of the head, the neck and shoulders,
    the arms and hands, and the diaphragm.
  • Thoracic spinal nerves (T1 to T12) control
    signals to the chest muscles, some muscles of the
    back, and parts of the abdomen.
  • Lumbar spinal nerves (L1 to L5) control signals
    to the lower parts of the abdomen and the back,
    the buttocks, some parts of the external genital
    organs, and parts of the leg.
  • Sacral spinal nerves (S1 to S5) control signals
    to the thighs and lower parts of the legs, the
    feet, most of the external genital organs, and
    the area around the anus.

8
Spinal cord injury
  • May be damaged by tumors, blood clots, wounds,
    trauma, or herniated disks.
  • Paralysis may occur depending on the extent of
    the injury.

9
Did you know???
About PowerShow.com