Nervous Tissue Flashcards
Classification of nervous system
CNS(Brain and spinal cord)andPNS(Autonomic(symba and parasymba)cerebrospinal nerves)
Interconnecting cells of nervous system
Neurons or nerve cells supported by neurological cells
Fuction of nerurons
Receive stimuli and conduct to central site
Function of CNS
Analysis stimuli and integration of desired response in the effector organs
Neurons based on morphology
Unipolar-has single process
Eg.mesencephalic nucleus of cranial nerve
Bipolar-2 process (axon and dendrite)
Eg. Spiral ganglion and bipolar cells in retina
Multi-many pro
Eg.autonomic ganglia and mortor neuron
Psuedounipolar-single pro but divides into axon and dendrite
Eg. Cranial and spinal ganglia
Neurons based on function
Sensory-stimuli from receptor to CNS .eg,sensory ganglia
motor-CNS to effector organ eg,ventral horn cells
Interneuron-connect Sensory and motor and cmplte the unit
Organelles in cellbody
Nucleus
Nissl body
Mitochondria
Golgi complex
Neurofilament and microtubules
Melanin
Lipofusion
Nissl body in soma /prokaryon
Large aggregation ofRER
Basophilic
Extent into dendrites but not into axon
On chromatolysis(injury to axon)it disintegrate
Dark brown granules
Melanin pigments
Dark brown granules
Melanin pigments
Residual bodies not digested by lysosome
Lipofusion pigments
Structural transport and extracellular transport provided by
Neruonal cytoskelton called neurofilaments and microtubules
Numerous rod shaped structures in prokaryon
Mitochondria
Cellbody found in
Grey matter of CNS and ganglia of PNS
