In some ways we are not so different from a zebra on the Serengeti. If we are threatened with bodily harm, just like the zebra being chased by a lion, our adrenal glands kick into high gear and secrete adrenalin and glucocorticoid hormones. These hormones can keep us alive in an emergency. Blood rushes to our most needed organs (heart, lungs, muscles). Digestion shuts down and we stop salivating.
No comments:
Post a Comment