Endocrine Glands

1
Endocrine Glands

• Pineal Gland a very small gland that performs
  most of its function between 0-7 years
• After 7 the gland shrinks in a process called
  involution
• The gland produces serotonin at day, melatonin at
  night

2
Thyroid Gland

• The gland is made of thyroid follicles that
  produce (T3) triiodothyronine, (T4) thyroxine and
  calcitonin
• (T3) (T4) work together to raise heat
  production, secreation increases during winter,
  also very important in fetal growth
• Calcitonin increases Ca2 storage in bone

3
Parathyroid

• Produces parathyroid hormone (PTH)
• PTH promotes bone breakdown when blood Ca2 is
  low

4
Adrenal Glands

• Adrenal medulla is not fully formed until age
  three
• Produces 85 of epinephrine in the body
• Epinephrine releases high-energy fuels such as
  fats and Glucose
• It also inhibits insulin so glucose is not
  needlessly burned

5
Adrenal Glands

• Adrenal Cortex produces three hormones
• Mineralocorticoids electrolyte balance
• Glucocorticoids promotes fat burning
• Sex steroids produces weak androgens that the
  building blocks for testosterone and estrogen