Alpha cells secrete
Glucagon
True or false: Endocrine glands have ducts
False - endocrine glands are ductless, hormones are released directly into the bloodstream
#9

Ovaries
Prolactin does what
Stimulates milk production
When does the thymus begin to shrink?
Puberty
Beta cells secrete
Insulin
Pineal hormone important in sleep/wake cycle
Melatonin
#2
Hypothalamus
Stimulates ovulation
LH
Butterfly shaped gland
Thyroid
Inhibits glucagon, insulin, and growth hormone release
Delta
Parathyroid gland releases PTH when ______ is low.
Calcium
#7
Adrenal glands
Oxytocin does what
Stimulates uterine contraction in childbirth
Endocrine clusters are called
Islets of Langerhans/pancreatic islets
Gland that influences more body processes than any other endocrine gland
Pituitary gland
#8
Pancreas
Stimulates adrenal cortex to secrete corticosteroids
ACTH
Mechanism where one endocrine gland stimulates another to secrete a hormone, which causes the 1st gland to stop producing hormones?
Negative feedback
Raises blood glucose
Alpha
Part of endocrine and immune system, produces t-lymphocytes
Thymus
#3
Pituitary gland
GH/Somatotropin does what
Protein synthesis, metabolism, bone & skeletal muscle growth
_________ stimulates the production of WBC for immune response.
Thymosin