Endocrine System Flashcards
Made up of organs and glands that produce, store and release hormones.
Endocrine System
Regulates chemical reactions in cells
Controls functions of tissues, organs, other cells
Hormones
By the brain
Pituitary Gland
Neck area
Thyroid gland
Middle of chest
Thymus
By kidney
Adrenal Gland
Found in the middle of small intestine
Pancreas
Release hormones into a duct to target cells
Exocrine gland
Release hormones directly into the bloodstream
Endocrine gland
Hormone release stops in response to decrease in stimulus
Negative Feedback Loop
As long as stimulus is present,action of hormone continues
Positive Feedback Loops
master gland of the endocrine system (brain)
Pituitary gland
Body growth
Growth hormone
Regulates thyroid gland
Thyroid stimulating hormone (TSH)
Growth of ova and sperm
Follicle stimulating hormone (FSH)
stimulates ovulation and testosterone in males
Luteinizing Hormone (LH)
Causes the breasts to grow and make milk during pregnancy and after birth
Prolactin
Stimulates reabsorption of water by the kidneys
Antidiuretic hormone (ADH)
Stimulates uterine contractions during labor and release of breast milk
Oxytocin