Download Endocrine System

Endocrine
System
Alex Wiemann
Function of the Endocrine System
 The endocrine system synthesizes hormones and releases
them into the body.
 Hormones act as chemical messengers that help regulate
and maintain various body functions.
Homeostasis
 Homeostasis is the regulation of the internal environment
of the body.
 The endocrine system maintains homeostasis. If hormones
levels were to become unbalanced, it would have
detrimental effects on the body.
Negative Feedback Mechanisms
 Negative feedback is when the glands within the endocrine
system that stimulate the release of a hormone from another
gland are eventually shut off so that too much hormone is not
produced.
 One example of a negative feedback mechanism is when the
hypothalamus secretes TRH. This causes the pituitary to release
TSH, which makes the thyroid gland secrete the thyroid
hormone. When the body has enough thyroid hormone in the
blood, the hormone causes a decrease in secretion of TRH and
TSH by the hypothalamus and pituitary.
Endocrine Glands
Glands
Gland
Hormone Secreted
Action of Hormone
Pituitary
ACTH
Causes adrenal glands to produce cortisol
Thyroid
T3
Controls metabolism
Parathyroid
PTH
Increases the concentration of calcium in
the blood
Thymus
Humoral factor
Develops lymphoid system
Adrenal
Glucocorticoids
Controls blood sugar
Pancreas
Insulin
Maintains glucose levels
Ovaries
Estrogen
Develops female sexual traits
Testis
Testosterone
Develops male sexual traits
Diabetes
Type I
Type II
Description
The body cannot produce
enough insulin
The body produces insulin, but
cannot use it
Signs and
symptoms
Exhaustion, increased thirst/
urination, blurred vision,
weight loss, constant hunger
Exhaustion, increased thirst/
urination, blurred vision, weight
loss, constant hunger, slow healing
of wounds
Prevalence
Signs begin in children and
teens
Signs begin showing in adults
Treatment
Insulin injections, blood sugar
checks, exercise , dietary plans,
no cure
Cured with exercise, dietary plans,
weight loss, medications may help
Sources

http://www.pennmedicine.org/health_info/body_guide/reftext/html/endo_sys_fin.
html

http://www.nativeremedies.com/articles/endocrine-system-and-homeostasis.html

http://www.hormone.org/Endo101/page3.cfm

http://www.cushings-help.com/the_body.htm

http://neurosurgery.ucla.edu/body.cfm?id=432

http://www.pyroenergen.com/articles08/thyroid-gland-hormones.htm

http://www.hormone.org/Endo101/page2.cfm

http://www.diffen.com/difference/Type_1_Diabetes_vs_Type_2_Diabetes