NEUROANA

• BUNDLES OF NERVE FIBERS FOUND IN THE CNS ARE REFERRED TO AS NERVE TRACTS

  NERVE TRACTS
• THE EXTERNAL PLASMA MEMBRANE OF THE SCHWANN CELL FORMS A

  MESAXON
• FUNCTION OF A-ALPHA FIBER

  MOTOR, SKELETAL MUSCLE
• FUNCTION OF A-BETA FIBER

  SENSORY, TOUCH, PRESSURE, VIBRATION
• FUNCTION OF A-GAMMA FIBER

  MUSCLE SPINDLE
• FUNCTION OF A-DELTA FIBER

  PAIN (SHARP, LOCALIZED), TEMPERATURE, TOUCH
• FUNTION OF B-FIBER

  PREGANGLION AUTONOMIC
• FUNCTION OF C-FIBER

  PAIN (DIFFUSE, DEEP), TEMPERATURE, POSTGANGLIONIC AUTONOMIC
• AFFERENT CRANIAL NERVES

  OLFACTORY I,

  OPTIC II,

  VESTIBULOCHOCHLEAR VIII
• EFFERENT CRANIAL NERVE 


  OCULOMOTOR III,

  TROCHLEAR IV,

  ABDUCENT VI,

  ACCESSORY XI,

  HYPOGLOSSAL XII
• BOTH AFFERENT AND EFFERENT CRANIAL NERVE

  TRIGEMINAL V,

  FACIAL VII,

  GLOSSOPHARYNGEAL IX,

  VAGUS X
• EACH NERVE CELL BODY IS CLOSELY SURROUNDED BY A LAYER OF FLATTENED CELLS CALLED

  CAPSULAR CELLS OR SATELLITE CELLS
• RESPOND TO MEHCNAICAL DEFORMATION

  MECHANORECEPTORS
• CHANGES IN TEMPERATURE; SOME RESPOND TO COLD, SOME TO HEAT

  THERMORECEPTORS
• RESPOND TO ANY STIMULI THAT BRING ABOUT DAMAGE TO THE TISSUE

  NOCICEPTORS
• RODS AND CONES OF THE EYES ARE SENSITIVE TO CHANGES IN LIGHT INTENSITY AND WAVELENGTH

  ELECTROMAGNETIC RECEPTORS
• respond to chemical changes associated with taste and smell and oxygen and carbon dioxide concentrations in the blood

  CHEMORECEPTORS
• CLUSTERS OF MERKEL DISCS FOUND IN THE EPIDERMIS AND HAIR FOLLICLE ARE CALLED

  TACTILE DOMES
• THIS CORPUSCLE IS OVOID IN SHAPE

  PACINIAN CORPUSCLES
• THIS CORPUSCLE IS LOCATED IN THE DERMIS OF HAIRY SKIN

  RUFFINI CORPUSCLES
• Each corpuscle consists of several large unmyelinated nerve fibers ending within a bundle of collagen fibers and surrounded by a cellular capsule


  RUFFINI CORPUSCLES
• TWO TYPE OF INTRAFUSAL FIBERS

  NUCLEAR BAG AND NUCLEAR CHAIN
• TWO TYPES OF SENSORY INNERVATION OF MUSCLE SPINDLE

  ANNULOSPIRAL AND FLOWER SPRAY
• THIS SENSORY INNERVATION IS IS SITUATED AT THE EQUATOR OF THE INTRAFUSAL FIBERS


  ANNULOSPIRAL ENDINGS
• THIS SENSORY INNERVATION IS SITUATED MAINLY ON THE NUCLEAR CHAIN FIBERS SOME DISTANCE AWAY FROM THE EQUATORIAL REGION

  FLOWER-SPRAY ENDINGS
• MOTOR INNERVATION OF THE INTRAFUSAL FIBER IS THE

  FINE GAMMA MOTOR FIBERS
• INNERVATION OF EXTRAFUSAL FIBERS

  LARGE ALPHA-SIZE AXONS
• MUSCLE THAT INITIATES MOVEMENT

  AGONIST
• MUSCLE THAT OPPOSES MOVEMENT

  ANTAGONIST
• LOCATED IN OUTER CONNECTIVE TISSUE SHEATH OF HAIR FOLLICLE BELOW SEBACEOUS GLAND


  HAIR FOLLICLE RECEPTORS
• NERVE FIBERS SURROUND AND RUN PARALLEL TO FOLLICLE


  HAIR FOLLICLE RECEPTORS
• MECHANORECEPTORS THAT ARE RAPIDLY ADAPTING


  HAIR FOLLICLE RECEPTORS
• WIDELY DISTRIBUTED THROUGHOUT THE BODY AND ARE ABUNDANT IN THE DERMIS, SUBCUTANEOUS TISSUE, LIGAMENTS, JOINT CAPSULES, PLEURA, PERITONEUM, NIPPLES, AND EXTERNAL GENITALIA

  PACINIAN CORPUSCLES
• MEASURES ABOUT 2MM LONG AND ABOUT 100 TO 500 Âum

  PACINIAN CORPUSCLES
• STRETCH RECEPTORS, RESPOND WHEN SKIN IS STRETCHED

  RUFFINI CORPUSCLES
• PROCESS BY WHICH ONE FORM OF ENERGY IS CHANGED INTO ANOTHER FORM OF ENERGY

  TRANSDUCTION
• STRETCHING OF INTRAFUSAL FIBERS RESULTS IN STIMULATION OF WHAT?

  ANNULOSPIRAL AND FLOWER-SPRAY ENDINGS
• ONE-THIRD OF ALL MOTOR FIBERS PASSING TO A MUSCLE ARE

  GAMMA EFFERENTS
• TWO-THIRDS OF ALL THE MOTOR FIBERS ARE

  ALPHA MOTOR FIBERS
• WHAT FIBERS ARE CONCERNED WITH DYNAMIC RESPONSES AND ARE ASSOCIATED MORE WITH POSITION AND VELOCITY OF CONTRACTION

  NUCLEAR BAG FIBERS