Flashcards
Module 7.3 Chemical control
Flashcards do conjunto (20)
- 1What are hormones?Hormones are chemical substances that act as messengers in the body.
- 2What is the endocrine system?It is a communication system that controls the internal environment of the body.
- 3What is a pituitary gland?The endocrine gland that controls the activites of other endocrine glands; it is often called the 'master gland'.
- 4What are target cells?The cells on which hormones act.
- 5What is hypothalamus?A portion of the brain that constantly checks the internal environment of the body.
- 6What is homeostatis?The process of maintaining a constant internal environment.
- 7What is feedback system?Body systems regulate themselves by monitoring and self correction adjusting output depending on stimulus.
- 8What is an effector?Muscles or glands that put the messages into effect.
- 9What is a receptor?A specialised cell that detects stimuli.
- 10What is endothermic?Able to maintain a constant body temperature.
- 11What is ectothermic?Animals that rely on environmental temperature to regulate body temperature and have the body temperature similar to their surroundings.
- 12What is the function of hypothalamus?The most important function is to link the nervous system and the endocrine system.
- 13What is another name for Pituitary gland?'Master gland'
- 14What are hormones responsible for?Water balance, body temperature and the volume of glucose in your blood.
- 15What is a thyroid?Hormone thyroxin which controls the rate of chemical reactions in the cell.
- 16What is pancreas?It produces the hormones insulins and gluocagon which both control blood glucose levels.
- 17What is Adrenal?Produces the hormones adrenalin in readiness for flight/fight.
- 18What happens if the temperatur of your body goes a few degrees above?Your metabolism will stop and you will die.
- 19What happens if the temperatur of your body goes a few degrees lower?Your metabolism will slow down.
- 20What does the hypothalamus act on?Pituitary gland
Informações
- Descrição
- Year 9 Sciences FlashCards sobre Module 7.3 Chemical control, criado por Addna Dahir em 20-03-2018.
- Criado por
- Addna Dahir · mar 2018
- Atualizado
- 21 mar 2018
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