NEURON TYPE HULTPOLAR BIPOLAR UNIPOLAR (PSEUDOUNPOLAR) Structural dzs: Nouron Type Accodng to the Hunber of Proesses Extonding from the Coll Body Many processes axtand fron the cal body. Al are dendrites excapt for a singla aon. Two processes artsond fron the coll body. One ka fused dendrtta, the othar k an One proces estends from the coll body and foms central and paripheral processes, which to gather comprise an on aon. Cal pody Farphoral Call body Cantral procass procass Call body Danane -Roceptve Aen andrigs Acon Dandies Aion Rolationship of Anatomy b the Threo Functiona Roglons Candutingregon (genttururh action poertal Secetory ragion entamirak salaa ruotanuniten -Trigger zone Triggar zona -Trigger zone (Many bipolar neurons do not ganarate action potantials in those that do, the location of tha trigger zone k not universal) Rolative Abundance and Location In Human Body Pare. Found in sone podal sansory orgars (offactory nucosa, eya, ean. Found mainly in the FNS. Common only In donal root qangla of the spinal cord and sensory ganglia of cranial nerves. Most abundant In body. Major neuron type in the CNS. Structural Vartatlors Mutpolar Bpoler Unipolar Raceptve ending Farphural- procass (axen) -Dandrttes -Dendrte Cel- body Cel- body Cel- body Cal body Axon- Cel Axon- Central- procase (axen) body FAon -Acon Purkinjo callof carebálum Dorsal root ganglon call Pyranidal call Otactory cal Reinal col NEURON TYPt BIPOLAR UNIPOLAR PSEUDOUNIPOLAR MULTPOLAR Functional Class: Nouron Type According to Disction of Impulse Conduction 1. Most multipolar neurons are internouons that conduct Impulses within the CNS, Intagrating sansory Input or motor output. May be one of a Essentialy all bipolar neurons are sarsory rieuroni that are located in some special sarse orgars. For exampie, chain of CNS neurons, or a singie nauron connecting bipolar calls of the retina are Involved with transmitting viual inputs from the sya to the brain fvla an Intarmedlate Most unipolar neurons are sensory nourons that conduct impulses alóng atfferent pathways to the CNS for Interpretation. (These sensory naurors are called primary or firstorder sensory neurons) sansory and motor neurons. 2. Some multipolar neurons are motor nourons that conduct imputseS along the efferant pathwayn from chain of neurons). the CNS to an effuctor (muscialgland. Sarsory nauron Bran Intemouron Eye Motor nauron mpulse Bipolar neurofi of ratina of aya Impuba Skin