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1.3 Peripheral Nervous System - Coggle Diagram
1.3 Peripheral Nervous System
Afferent pathway / sensory neuron
Types
Somatic sensory
Skeletal muscle (Proprioceptor) receptors
Golgi tendon organ
Muscle spindle
Thermoreceptor: respond to changes in temperature
Cold receptor: stratum basale - temp: 10 - 35
Warm receptor: in dermis - temp: 30 - 45
Pain receptor: <10 and >45
Nociceptors: responsive/sensitive to tissue damage
Superficial somatic pain - at skin
Deep somatic pain - musculoskeletal
Visceral - internal organ
Visceral sensory
Thermoreceptor: respond to changes in temperature
Osmoreceptor: Detect changes in the concentration of solutes in extracellular fluid
Photoreceptors: respond to light
Chemoreceptor: respond to chemical stimuli
Nociceptors: responsive/sensitive to tissue damage - visceral pain
Baroreceptor: sensors in the vascular system - response to pressure
Tactile receptor: receptor to the skin - response to touch)
Transmit impuls from sensory receptors to CNS (spinal cord & brain)
Efferent pathway / motor neuron
Somatic nervous system
Motor of musculoskeletal (locomotive)
Autonomic nervous system
Sympathetic division
Make body to aware to stimulus spontaneously
Fast response time
Fight and flight response
Shorter neuron pathway
Ganglia: from spinal nerve fibres (thoracolumbar area)
Parasympathetic division
Maintaining homeostasis
Slow response
Make body to relax
Relax (Preganglionic)
Rest and digest resonse
Long neuron pathway
Motor of smooth muscle, cardiac muscle and glands
Concept
Sensory receptor: Structure of the nervous system monitoring changes in the external & internal environment
Consist of all nervous tissue outside the CNS
Structural
Encapsulated nerve ending
Connective tissue capsule
Dendrite closed
Separate cells
Specialized cells sypnatic to sensory neuron
Free nerve ending
Simplest
Lack of specialization cell
Bare dendrits
Location
Extraceptor
Respond to external stimuli
transfer info and changes from environment
Interceptor
respond to internal stimuli in body