Transcript Endocrine System - Westhampton Beach Elementary School

Endocrine
System
Endocrine
System
What is the purpose?
• to regulate body activities through the use
of chemicals known as hormones
• a hormone is a chemical produced by a
gland that affects the activities of other
organs or tissues
Endocrine
System
Endocrine System
• hormones work through a lock-n-key system
Glands and Hormones
Gland
Hormone
Affect on the Body
Regulatory
Regulates the activities of other
endocrine glands
Pituitary
HGH – human
growth hormone
Gonad hormone
Stimulates bone growth
Stimulates development of sex
organs
Adrenals
Adrenaline
Increases heart rate, blood
pressure and breathing rate
Thyroid
Thyroxine
Increases rate of metabolism
Pancreas
Insulin
Glucagon
Decreases blood sugar level
Increases blood sugar level
Ovaries
Estrogen
Progesterone
Produces female secondary sex
characteristics
Promotes growth of uterine wall
Testis
Testosterone
Produces male secondary sex
characteristics
Hypothalamus chemicals
Endocrine System
• Negative Feedback System – hormones work
together in opposition; as one increases the
other decreases to create a balance
• Example: In the
diagram ACTH and
Glucocorticoids are
working in opposition
to control the adrenal
response; when the
body is stressed more
adrenaline is needed