FROM POWERPOINT:
This is the process which occurs in the human body every time there is an outside stimulus.
Involves the Sympathetic Nervous System and Parasympathetic Nervous System for polygraph.
Receptor – The sense organ that is receiving the stimulus.
Sensory Neurons – The pathway for the message to be sent to the central nervous system (brain & spinal cord).
Synapse – The evaluation of the received message.
Motor Neurons – These are attached to the muscles, causing a response and activates the sympathetic nervous system.
Effectors – The action which occurs or is caused.
PROCESS:
Hear the question through the ear.
Message sent to the brain.
Unable to act because of taking the examination.
Sympathetic Nervous System activated.
Reactions are observed in tracings.
GOOGLE DESCRIPTIONS:
Your sympathetic nervous system is best known for its role in responding to dangerous or stressful situations. In these situations, your sympathetic nervous system activates to speed up your heart rate, deliver more blood to areas of your body that need more oxygen or other responses to help your get out of danger.
Simple reflexes are rapid, brief, automatic, and involve only a small portion of the body in a two-neuron arc.
Simple reflexes include the contraction of a muscle in reaction to stretching, salivation at the view of food, and blinking of eyes when the cornea is touched. These types of reflexes often help maintain homeostasis.
What is a reflex action?
A reflex action or reflex is an involuntary movement that occurs almost instantly in reaction to stimuli. Reflex actions are carried out via the reflex arc, a neural pathway that regulates reflexes. The sensory neurons receive signals from the sense organ and transmit them via other connected neurons. The sense organ that detects threats is the receptor.
Q2
How is the reflex arc formed?
A reflex arc is formed when impulses from the receptor travel to the spinal cord and are then translated into the proper reflex impulse and transmitted to the muscles. The impulse is not sent to the brain to speed up response time.
Q3
Why is swallowing not considered a simple reflex action?
Essentially an involuntary reflex, swallowing only occurs when there is saliva or another item to swallow. Initially, food is transported to the back of the oral cavity; however, once it has reached the back of the mouth, the reflex action to swallow takes control and prevents retraction.
EXAMPLES: Simple reflexes include the contraction of a muscle in reaction to stretching, salivation at the view of food, and blinking of eyes when the cornea is touched. Strike knee and leg kicks out.