Download Hormones That Affect Metabolism

Hormones That Affect Metabolism
Gland
Thyroid
Parathyroid
Anterior Pituitary Gland
Hormone
Action
Hormones That Affect Metabolism
Gland
Hormone
Action
Thyroid
Thyroxine
metabolism
Calcitonin
↓’s calcium levels in
blood
Parathyroid
PTH
↑’s calcium levels in
blood
Anterior Pituitary Gland
GH
Growth of bones and
soft tissue
Thyroid Gland and Negative Feedback
• Type in “Biology in Motion” and click on
Thyroid Gland and Negative Feedback
• Go through animations and make notes on:
• A) Stimulation of the Thyroid Gland
• B) Regulation of the Thyroid Gland
• C) Goiter and it’s Prevention
Feedback Control Loops for Thyroid Hormones
Thyroid Gland
•
•
•
•
Hyperthyroidism
↑ thyroxine
↑ metabolism
No weight gain
•
•
•
•
Hypothyroidism
↓ thyroxine
↓ metabolism
Weight gain
Parathyroid Glands
• 4 small glands inside the thyroid
• Produce PTH
Endocrine System Control
Feedback
Regulation of Blood Calcium
calcitonin
 kidney
reabsorption
of Ca++
thyroid
high
blood calcium level
 Ca++ uptake
in intestines
(10 mg/100mL)
low
activated Vitamin D
bones
release Ca++
 kidney
reabsorption
of Ca++
parathyroid
parathyroid hormone (PTH)
Ca++ deposited
in bones
Growth Hormone
• ↓ GH  Dwarfism
• ↑ GH  Gigantism
• GH affects all body cells BUT mainly bone cells
• Acromegaly- bones of jaw, forehead, fingers
and toes increase in width, once other bones
can no longer increase in length (growth
plates fused)