B5
- Created by: 05ayesha04
- Created on: 11-02-18 16:05
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- Homeostasis and Response.
- Homeostasis.
- Maintains optimal conditions for enzyme reactions and other cell functions.
- In humans this includes the control of-blood glucose concentration, body temperature and water levels.
- The nervous system and hormones are responsible for it.
- Control systems.
- Receptors detect stimuli
- Co-ordination centres (brain, spinal cord and glands)
- Effectors are muscles and glands.
- Human nervous system.
- Allows humans to react to their surroundings and coordinate their behaviour.
- Stimulus Receptor Coordinator Effector Response
- Reflex arc.
- The nerve pathways that allow fast, automatic responses.
- Sensory Relay Motor
- The endocrine system.
- Composed of glands that release hormones into the bloodstream.
- The blood carries the hormones to a target organ where it has an effect.
- Pituitary gland, Pancreas, Thyroid, Ovary, Adrenal glands and Testes.
- Blood glucose concentration.
- Too low- glycogen released.
- Too high- insulin released.
- Homeostasis.
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