Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
What are the functions of the Spinal Cord? |
-conduction -locomotion -reflexes |
|
|
Definition of Conduction |
bundles of fibers passing information up and down spinal cord |
|
|
Locomotion |
-repetitive, central pattern generators are pools of neurons providing control of flexors and extensors (walking) |
|
|
Definition of Reflexes |
involuntary, sterotyped respones to stimuli involves brain, spinal cord and peripheral nerves |
|
|
Gray Matter |
neuron cell bodies with little myelin |
|
|
White Matter |
myelinated axons |
|
|
Contralateral |
origin and destination are on opposite sides |
|
|
Ipsilateral |
origin and destination are on the same side. |
|
|
What carries sensory information up the spinal cord to the brain? |
Ascending Tracts |
|
|
What information does the Posterior Column or Medial Leminiscal Pathway convey? |
Body Movement, limb position, fine touch, pressure. |
|
|
What information does the Spinothalamic Pathway convey? |
pain, heat and cold |
|
|
What carries motor information down the brain stem and spinal cord? |
Descending Tracts |
|
|
What information does the Corticospinal Pathway convey? |
Finely coordinated limb movements |
|
|
What controls reflexive movements of the head in response to visual and auditory stimlui? |
Tectospinal |
|
|
What controls muscles of upper and lower limbs to maintain posture and balance? |
Reticulospinal |
|
|
What receives inputs from inner ear, helps in maintaining balance and posture? |
Vestibulospinal |
|
|
What are the two neuron pathways found in the Corticospinal Tract? |
-Upper motor neuron in cerebral cortex -lower motor neuron in spinal cord |
|
|
What are quick involuntary stereotyped reactions of the glands or muscle to some type of stimulation? |
Reflexes |
|
|
5 Components of a Reflex |
1. Sensory Receptor 2. Sensory Neuron 3. Synapse in spinal cord gray matter 4. Motor Neuron 5. Effector: skeletal muscle |
