Endocrine System Flashcards
What is the endocrine system
Chemical messenger system consisting of hormones, the glands which secrete those hormones and the feedback loops that control their release so that homeostasis is maintained
Chemical control of the body Heart rate Fight or flight Reproduction Growth
what are hormones, glands
Hormones
Chemical messengers
Secreted by glands throughout the body
Glands
Structures that secrete substances for use in the body
Together they create chemical control of the body for countless processes
Ex. Heart rate, fight or flight, energy systems, reproduction, etc.
What are all the glands we need to know (10)
- Hypothalamus
- Pituitary
- Pineal Gland
- Thyroid
- Parathyroid gland
- Thymus
- Pancreas
- Adrenal Glands
- Ovaries
- Testes
Function of the hypothalamus
Part of the lower middle brain that tells the pituitary gland when to release hormones
Acts as a connector between the endocrine and nervous systems
Body temp, thirst, appetite, emotions, sex drive, childbirth, etc.
Function of the Pituitary
Base of brain behind sinuses
“Master Gland”
Body growth hormone ( GH ), menstrual cycles, release of breast milk, metabolism
Function of the Pineal Gland
Near the centre of the brain
Helps control wake/sleep patterns
Function of the Thyroid
Butterfly-shaped gland in the front of the neck
Helps control metabolism
Uses iodine to make hormones
Function of the Parathyroid gland
iny glands on the back of the thyroid
Controls amount of calcium in the blood
Function of the Thymus
Located in upper chest
Helps with the immune system
Function of the Pancreas
Located in the abdomen
Digestion and blood sugar regulation
Function of the Adrenal Glands
On top of each kidney
Adrenaline, cortisol (stress hormone, weight gain)
Function of the Ovaries
Female reproductive organs
Release eggs and produce sex hormones
Function of the Testes
Male reproductive
organ
Produce sperm
and sex hormones
What are these endocrine disorders:
Adrenal insufficiency Cushing’s disease Gigantism Hyperthyroidism Hypothyroidism Hypopituitarism Polycystic ovary syndrome Precocious puberty
Adrenal insufficiency (Addison’s disease)- adrenal gland releases too little cortisol
Cushing’s disease (over productive pituitary)- over active adrenal glands and too much cortisol, swollen face
Growth hormone over/under production- gigantism
Hyperthyroidism- over active, fast metabolism, anxious
Hypothyroidism- under active
Hypopituitarism- pituitary stops releases hormones, women with little body fat or over exercise
Polycystic ovary syndrome- cysts on ovaries, lead to infertility
Precocious puberty- abnormal early puberty
type 1 diabetes
Autoimmune condition
Destruction of insulin producing cells in the pancreas
Insulin lowers blood sugar
Body cannot adequately regulate glucose levels