THE HISSING SNAKE !!!!! Role of Adrenalin Explain how a person running and is suddenly frightened by the sound of a hissing snake responds Reaction In An Emergency Situation - The person hears or sees the hissing snake - this provides the stimulus - which is converted by the ear and eye into an impulse - and is carried by the auditory and optic nerve - to the brain • where the impulse is interpreted • The balance of the body is retained by the semicircular canals and proprioceptors • The brain initiates a reflex action resulting in the following: The adrenal glands is stimulated by the autonomic nervous system to secretes adrenalin adrenalin increase the rate of the heart beat and the blood pressure rises Causing the blood vessels in the skin to constrict hair to stand erect blood vessels to the brain to dilate It also increases the rate and depth of breathing It causes the glycogen in the liver and muscles to be converted to glucose under the influence of glucagon the glucose is released into the blood stream which supplies additional energy for the increased metabolic rate the person can urinate suffer from diarrhea the mouth becomes dry increased sweating on the forehead and hands more energy is released for muscle activity in order to run away faster / jumping / screaming any 17 LIFE SCIENCE ACADEMICS – 2014
Posted on: Sat, 13 Sep 2014 08:35:36 +0000
Trending Topics
Recently Viewed Topics
© 2015