Homeostasis
- Created by: Goncharov123
- Created on: 22-01-23 15:52
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- Homeostasis
- Synapses and Reflexes
- The connection between two neurones is called a synapse.
- The nerve signal is transferred by chemicals which diffuse across the gap
- These chemicals then set off a new electrical signal in the next neurones.
- The nerve signal is transferred by chemicals which diffuse across the gap
- Reflexes help prevent injury. They are fast, automatic responses that don't require conscious thought.
- The passage of information from a receptor to a reflector is called a reflex arc.
- Response
- The passage of information from a receptor to a reflector is called a reflex arc.
- The connection between two neurones is called a synapse.
- When the level of something (eg temperature blood glucose) gets too high or too low, negative brings it back to the normal level.
- The Brain
- It's made up of four main regions.
- Cerebral Cortex (consciousness, intelligence, memory, language)
- Medulla (unconscious activities)
- Cerebellum (Muscle coordination)
- Methods to study the brain
- Patients with brain damage
- Electrical stimulation
- MRI Scans
- It's made up of four main regions.
- The Eye
- Parts of the Eye
- Sclera (tough supporting wall)
- Cornea (transparent outer layer at the front of the eye)
- Iris (controls the diameter of the pupil)
- Lens (focuses the light into the retina)
- Retina (contains receptor cells sensitive to light intensity and colour)
- Parts of the Eye
- The Endocrine System
- Hormones are chemical messengers sent in the blood.
- Glands that release some hormones:
- Ovaries
- Testes
- Pituitary Gland
- Thyroid
- Adrenal Gland
- Pancreas
- Synapses and Reflexes
- Stimulus
- Receptor
- Sensory Neurone
- CNS
- Motor Neurone
- Effector
- Response
- Effector
- Motor Neurone
- CNS
- Sensory Neurone
- Receptor
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