Reflexes Uncovered-Pathway of an action potential Comprehensive Paper Essay

Reflexes Uncovered-Pathway of an action potential Comprehensive Paper - Essay ExampleA comment is generated immediately a person comes in contact with a painful object like fire. The stimulant drug has to pass through layers of the layers of the skin, which include the epi derma and the corium. The anatomy of the skin displays a rich network of receptors that atomic number 18 responsible for detecting pain (Moses et al., 67). The epidermis consists of hair and Merkels disc, which is a tactile receptor show between the epidermis and the dermis. This receptor detects any form of external stimuli. The Pacinian corpuscle is to a fault found in the outermost layer of the skin and it detects abnormal pressures from external environment. Apart from these receptors, the outer skin layer has melt nerve endings that detect pain. The stimulus goes through the free nerve endings to other sensory receptors in the dermis (Moses et al., 70).The presence of sensory receptors enables the skin to detect any change in environmental pressures like fire. The dermis also has the Ruffinis corpuscle which is a receptor similar to a mushroom shape. The stimulus is also detected by the Pacinian corpuscle, which detects deep pressure within the hypodermis layer. The dermis contains free nerve endings that play a major part in detecting external stimuli. A stimulus excites the impulse at the resting tissue layer potential of the neuron threshold potential in order to r apiece the uttermost action potential. When the maximum action potential is achieved, the cell membrane of the neurons becomes depolarized and the sensory receptors convert the portrayed information into nerve impulses. As a result the nerve impulse away from the dendrites into the neuron past onto the cell body of the nerve. It then travels via the myelin sheath of the axon, to the nodes of Ranvier and lastly to the synaptic knob where the axon and another neuron meet each other. The gap between one neuron and anothe r is called the presynaptic membrane