Nervous tissue Flashcards
Terms
perikaryon
axon hallock
terminal boutons
Basic neuron types and examples
Multiplar-motor neurons
Bipolar-reeptors of smell, sight or balance
Pseudounipolar- sesnsory neurons
Intervals where axon is covered by myelin sheath
Nodes of Ranvier
Types of synapses
Axosomatic- cell body and axon
Axoaxonic
Axodendritic
Peripheral nerves
Contain affarent or effarent nerve fibres
- endoneurium-connective tissue
- perineurium-epithelial cells
- epineurium-collagenous tissue
Ganglia
Spinal-spinal cord-satellite cells-pseudounipolar
Sympathetic-vertebral column-brown stains-multipolar
Prasympathetic-
Sensory receptor 1,2,3
1.Proprioreceptor- concious and unconcious
2.Interoreceptor- functioning of body organs-chemoreceptors
3. Exoreceptor- external stimuli, touch
Sensory receptor 4
Meissner corpuscle-fast adapting mechanoreceptors , found in papillary dermis
DETECT CHANGES IN TEXTURE AND VIBRATIONS
Sensory receptor 5
Merkel cells-slow adapting mechanoreceptors
PROVIDE INFO ABOUT PRESSURE
Sensory receptor 6
Pacinian corpuscles- located in deeper skin-RESPONSIVE TO PRESSURE-NON-MYELINATED NERVE FIBRE