Transcript Endocrine System

Endocrine System
Glands & Hormones
Hormone
A chemical messenger that is produced
at one site and carried by the blood to
its site of action (target cells)
Pituitary Gland
1. ACTH (Adrenocorticotropic hormone) Stimulates
adrenal glands to make Cortisol and aldosterone
2.
ADH (Antidiuretic hormone) Causes kidneys to
reabsorb more water preventing dehydration
3. GH (Growth hormone) (Causes bone and muscle
growth)
4.
TSH (Thyroid stimulating hormone) (Stimulates
thyroid gland to make T3 and T4)
Pituitary Gland
5.
LH (Luitenizing hormone) (Stimulates estrogen &
progesterone secretion from ovaries & testosterone
secretion from testes)
6.
FSH (Follicle stimulating hormone) (Egg & sperm
production)
7.
Oxytocin (Causes uterine contractions)
8.
Prolactin (milk production)
Pineal Gland
• Melatonin (Initiates sleep)
Thyroid Gland
T3 (Triiodothyronine) (Controls
metabolism)
T4 (Thyroxin) (Controls metabolism)
• Calcitonin (Builds up bone to lower blood
calcium)
Parathyroid Gland
• PTH (Parathyroid hormone) (Breaks down
bone to raise blood calcium)
Thymus Gland
• Thymosin (Controls immune system)
Pancreas
• Insulin (Allows glucose to enter cells;
LOWERS blood glucose)
• Glucagon (Stimulates liver to make
glucose; RAISES blood glucose)
Adrenal Glands
Medulla
a. Epinephrine (adrenaline)
(Increases: blood glucose, heart rate,
blood pressure, breathing rate, &
dilates bronchioles)
b. Nor-epinephrine (nor-adrenaline)
(Same as Epinephrine)
Adrenal Glands
Cortex
a. Cortisol (Stress released to increase
blood glucose)
b. Aldosterone (Controls salt & water
balance)
c. Androgens (small amounts of estrogen
and testosterone)
Ovaries
• 1. Estrogen (Creates female
secondary sex characteristics)
• 2. Progesterone (Thickens the
uterus lining each month)
Testes
• 1. Testosterone (Creates male
secondary sex characteristics)
Kidneys
• Renin and Angiotensinogen which
control blood volume
Heart
• ANP (Atrial Naturetic Polypeptide)
which causes Na ions to be excreted
in the kidney (Lose water & ultimately
blood pressure)
Negative Feedback