spinal cord/nerves

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Author:
dug
ID:
49591
Filename:
spinal cord/nerves
Updated:
2010-11-14 20:42:56
Tags:
spinal cord nerves
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Description:
spinal cord/nerves
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  1. Spinal cord (gross structure)
    • Conus Medularis-terminal end, cone shaped, above...
    • Cauda Equina-"horse tail" inferior end
    • Filum Terminale-Fibrous extensions of pia mater
  2. Cervical Plexus...
    Phrenic Nerve-Diaphram
  3. Brachial Plexus...
    • Axillary Nerve-Deltoid (501-26)
    • Musculocutaneous-Bicep Brachii (501-21)
    • Median-Palmaris Longus (501-23)
    • Radial-Tricep brachii (501-22)
    • Ulnar-Flexor carpi ulnaris (501-24)
  4. Lumbosacral Plexus...
    • Femoral-Quadriceps (503-34)
    • Saphenous-(503-38)
    • Obturator-Adductor Magnus Longus/brevis (503-36)
    • Lateral Femoral Cutaneous Nerve-Skin of lateral thigh (503-33)
    • Sciatic-2 nerves, tibial & common fibular, common sheath
    • Tibial-Hamstrings (posterior 504-44)
    • Common Fibular- Short head biceps femoris (504-37)
    • Deep Fibular-(Anterior 504-40)
    • Superficial Fibular-(Anterior 504-41)
  5. Autonomic N.S...
    • Parasympathetic-craniosacral division, rest and relax
    • Sympathetic-thorocolumbar division, fight or flight, maintain homeostasis
    • White ramus communicans
    • Sympathetic trunk-lie alongside vertebral column
    • Gray ramus communicans-where postganglionic axons reenter spinal nerve
  6. Reflex Arc...
    • 1.Receptor-Stimulus
    • 2.Sensory Neuron-Afferent
    • 3.Integration Center-In spine
    • 4.Motor Neuron-Efferent
    • 5.Effector-Response
  7. Somatic Reflexes
    • Postural reflex, maintain posture, balance, locomotion
    • Patellar reflex-knee jerk
    • Achilles reflex
  8. Autonomic reflexes
    • Pupillary reflex-pupil constricts
    • Salivary reflex-glandular
  9. Sensory Receptors
    • Exteroreceptors-react to external stimuli, near surface of skin (pacinian corpuscle)
    • Interoreceptors-(visceroreceptors) react to internal stimuli, internal organs (chemoreceptors)
    • Proprioceptors-internal stimuli, skeletal muscle, joints, tendons, ligaments, C.T.
  10. General Sensory Receptors
    • Cutaneous...
    • Merkel Discs-pain receptor, temp, naked nerve endings
    • Root Hair Plexuses-hair movement, light touch
    • Meissners Corpuscles-touch, light pressure, in dermal papillae
    • Pacinian Corpuscles-deep pressure, high frequency vibration, deep in dermis
    • Proprioreceptors...
    • Muscle Spindles

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