CentralPeripheral Nervous Systems Spinal cord Spinal Cord Spinal

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Central/Peripheral Nervous Systems

Central/Peripheral Nervous Systems

Spinal cord

Spinal cord

Spinal Cord

Spinal Cord

Spinal cord composition Gray matter – Dorsal = sensory – Ventral = motor White

Spinal cord composition Gray matter – Dorsal = sensory – Ventral = motor White matter – Axons = impulse

CNS Disorders - Polio

CNS Disorders - Polio

Polio Vaccination - 1962

Polio Vaccination - 1962

ALS – Lou Gehrig’s Disease

ALS – Lou Gehrig’s Disease

ALS – Lou Gehrig’s Disease

ALS – Lou Gehrig’s Disease

ALS – Lou Gehrig’s Disease

ALS – Lou Gehrig’s Disease

Shingles

Shingles

Spinal Cord Trauma - Whiplash

Spinal Cord Trauma - Whiplash

Spinal Cord Trauma

Spinal Cord Trauma

Reflexes - Myotatic

Reflexes - Myotatic

Reflexes - Flexor

Reflexes - Flexor

Reflexes – Crossed Extensor Affected side: Pull away from stimulus Opposite side: Contract toward

Reflexes – Crossed Extensor Affected side: Pull away from stimulus Opposite side: Contract toward stimulus

Reflexes – Crossed Extensor If falling, push limbs out in opposite direction of fall.

Reflexes – Crossed Extensor If falling, push limbs out in opposite direction of fall.

Reflexes – Golgi Tendon

Reflexes – Golgi Tendon

Reflexes – Golgi Tendon 1. Create downward tension on the shoulder. 2. Signal sent

Reflexes – Golgi Tendon 1. Create downward tension on the shoulder. 2. Signal sent to alleviate the pressure, so body collapses to “prevent” injury.

Central Nervous System Meninges

Central Nervous System Meninges

Central Nervous System Meningitis – bacterial/viral inflammation Affects pia mater & arachnoid

Central Nervous System Meningitis – bacterial/viral inflammation Affects pia mater & arachnoid

Brain Stem

Brain Stem

Limbic System

Limbic System

Insula Little is known, although evidence for – – – Addiction Moral judgment Appreciation

Insula Little is known, although evidence for – – – Addiction Moral judgment Appreciation for music Humility & pride Lust & disgust “Human qualities”

Limbic System

Limbic System

EEG and Grand Mal Seizure

EEG and Grand Mal Seizure

Sleep Stages

Sleep Stages

Sensory gyrus and motor control gyrus

Sensory gyrus and motor control gyrus

Contralateral Neglect Syndrome Failure to recognize side of body contralateral to injury May not

Contralateral Neglect Syndrome Failure to recognize side of body contralateral to injury May not bathe contralateral side of body or shave contralateral side of face Deny own limbs Objects in contralateral visual field ignored

NOTE: IMAGE IS SHOWN FROM BACK

NOTE: IMAGE IS SHOWN FROM BACK

Amnesia – anterograde/retrograde

Amnesia – anterograde/retrograde

Right “Vs. ” Left Brain

Right “Vs. ” Left Brain