Hormones
- Created by: Hannah
- Created on: 03-08-16 15:50
View mindmap
- comunication systems in animals
- Hormones
- 3 main types of Hormaons
- proteins (insuline, glicogen)
- Amines (adrenaline)
- Steroids (cortisol, oestrogen + progesterone)
- Detect changes- generate and appropriate respose
- Regulate energy use, metabolism and growth
- maintain homeostasis
- Are secured by endocrine
- reach all parts of the body
- minute quantities produce significant effects
- one hormones can have different effects
- lipid - soluble hormones
- passes though the target cell membrane
- bind to an intracellular receptor
- hormone receptor complex binds to DNA
- water soluble hormones
- binds to recptors
- receptors pprotein
- series of relay molecules
- cell response occurs
- control of glucose
- insulin + glucagon are antagonistic
- negative feedback
- in the pancreas
- alpha cells - release glucagen
- beta cells - release insulin
- increase glucose, release of insulin
- release into the blood
- steroid hormones regulate gene expression
- receptors in cytosal
- hormone receptor complex
- conformational change
- nuclear transcription
- activates gene transcription
- production of protiens
- mechanisms controlling the release of homones
- specific metabolite in the blood e.g. glucose
- TSH, thyroid stimulating hormone
- stimulation of neurons
- thyroid secrete T3 + T4 which regulates -
- heart rate
- muscle tone
- bionergetics
- Digestive and reproductive function
- 3 main types of Hormaons
- External
- Changes in temp
- response to danger
- internal
- changes in blood glucose levels
- changes in osmotic pressure
- Hormones
Comments
No comments have yet been made