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Anatomy & Physiology: Module 3 Lesson 03.04: Assessment
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ANATOMY & PHYSIOLOGY : MODULE 3 LESSON 03.04: ASSESSMENT
Calista Lahocinsky
Stimuli
Getting scared from a frightening face.
Stimuli
Sensory Nerve Fibers
Emergency signals are sent to the sensory nerve fibers and transfer it to the interneurons.
Sensory Nerve Fibers
Interneurons
Interneurons
Interneurons interperet the signal and makes the decision of what course of action to take.
Pregangolic Motor Neuron
Interneurons then send the signal to the pregangolic cells. The pregangolic cells transfers the signal to the ganglia cells.
Pregangolic Motor Neuron
Chain Ganglia/ Cranial Nerve Ganglia
The GANG-lia distributes the signal to all of the organs needed to react.
Chain Ganglia/ Cranial Nerve Ganglia
Postganglionic Motor Neuron
The postganglionic cells then recieve the emergency signal from the ganglia and transfers it to the organs.
Postganglionic Motor Neuron
Effector Organ
Various organs recieve the signal and act appropriatly.
Effector Organ
Effects
There are three effects when a fight or flight reaction may occur. Your pupils dialate, so that you can see better. You gasp, so that theres increase in oxygen. Your blood vessels constrict, to accelerate blood flow.