Endocrine System Flashcards
Describe how the endocrine system works
Hormones are produced by glands and get released into bloodstream
They help maintain body enviroment
How do hormones work? Stage 1 -4
1 - Endocrine gland gets stimulated and releases hormones into the bloodstream.
2- H gets sent around body until they find the correct target cell
3- Initiated the wanted responce into the cell
4- When responce is given, endocrine gland stops production of H.
6 most important endocrine glands:
Hyperthalamus (Brain) Pituitary (Base of brain) Thyroid (Below adams apple) Pancreas (below stomach) Adreal (Kidneys) Overies/Testes (pelvic region)
6 stages of the role of Insulin
1- Glucose are released
2- Pancreas detects increase in G
3- Pancreas releases insulin
4- Insulin allows cells to be more permiable
5- G levels drop
6- Pancreas detects drop and stops releasing Insulin
6 stages of the role of Glucogen
1- Glucose levels drop 2- Pancreas detects drop 3- Pancreas increases glucogen into bloodstream 4- Glucose levels begin to rise 5- Pancreas detects rise 6- Pancreas reduces glucogen levels
Describe the role of Progesterone
If egg ISNT fertalised, level of P drops to normal
If egg IS fertalised, P stimulates vessel growth until plcaenta is formed.
Strengthens breast tissue and pelvic muscles for child birth
Role of growth hormone
Released directly from pituitary gland, ad produces bone growth in all areas especially during puberty
Role of the thyroid hormone
Released from the thyroid gland in upper chest responsible for: #metabolism, #oxygen levels #body temperature
Describe a motor neurons structures and functions
Cell body (regulates activity) Axon (Transmits action potentials along length of cell) Axon terminal (Bridge between neuron and other cells) Myelin sheath (Casing that covers neuron for protection) Dendrites ( Carries incoming potentials + communicates to other cells RE. Sensation)
