Adrenal Gland Medulla
By: Abigail Moss & Sydney Lineberry
Where are they located?
 The adrenal glands are located at the top of each
kidney.
 The adrenal medulla is located in the inner part of the
adrenal gland.
What types of hormones does the
gland produce?
 The adrenal medulla secretes:
 Epinephrine(adrenaline)
 Norepinephrine(noradrenaline)
The affect of the hormones on the
body
 Epinephrine(adrenaline): this hormone aids the body
when responding to stressful situations(fight or flight
response), it will increase the heart rate and glucose
within the body
• Norepinephrine(noradrenaline): this
hormone also aids the body in stressful
situations and increases blood pressure
in response to severe stress
Why are the hormones important
for homeostasis?
 These hormones are important for homeostasis
because it helps a person cope with physical and
emotional stress. When put into a stressful situation a
person’s body can be taken from homeostasis and the
hormones which the adrenal medulla secrete help to
take the body back to a homeostatic state.
Feedback Mechanisms and
Antagonistic Hormones
 Antagonistic Hormones:Hormones that act to return
body conditions to acceptable limits from opposite
extremes.
 The medulla is regulated by nerve impulses from the
hypothalamus
 The adrenal cortex is regulated by negative feedback.
-Negative feedback occurs when the rate of the process
decreases as the concentration of the product increases.
What happens if the gland does
not function properly?
 Addison's Disease: Adrenal cortex fails to produce
enough cortisol and aldosterone.
 Adrenal Cancer: Tumors that cause adverse changes
within the body because of the excess hormones they
produce.
 Cushing Syndrome: Over production of the hormone
cortisol
 Congenital Adrenal Hyperplasia: Low levels of cortisol
What can be done medically to correct
problems of the gland not functioning
properly?
 Surgery (this is the primary treatment)
 Medical Therapy
Sources
 http://www.hopkinsmedicine.org/healthlibrary/condition
s/endocrinology/adrenal_glands_85,P00399/
 http://www.hopkinsmedicine.org/healthlibrary/condition
s/endocrinology/adrenal_glands_85,P00399/
 http://www.endocrineweb.com/endocrinology/overviewadrenal-glands
 http://ucsfhealth.org/conditions/adrenal_disorders/