Nervous system Flashcards
Sense organs detect ______?
Stimuli
What are the 5 different sense organs?
Eyes 👀 Nose 👃🏼 Tongue 👅 Ears 👂🏼 Skin 👋🏼
All sense organs contain different groups of cells which are sensitive to a ______
Stimulus
Receptors turns stimulus energy into _____ _______
Electrical impulses
A stimulus can be 8 things, name 4?
Light Sound Temperature Touch Pressure Pain Chemical Position
What are light receptors sensitive to?
Light
What are sound receptors sensitive to?
Sound
What are smell receptors sensitive to?
Chemical stimuli
What are taste receptors sensitive to?
Taste of foods eg bitter/sweet/sour ect
Chemical stimuli
What are skin receptors sensitive to?
Touch
Pressure
Pain
Temperature change
What does the sensory neurones do?
NERVE CELLS to carry signals as ELECTRICAL IMPULSES from the RECEPTORS in the sense organs to the CENTRAL NERVOUS SYSTEM
What does the relay neurones do?
NERVE CELLS that carry signals to the EFFECTOR muscles or glands
What does the effectors do?
MUSCLES CONTRACT
GLANDS SECRETE HORMONES
What is the central nervous system?
Its where all the information from sense organs is sent
What does the central nervous system do?
Coordinates where the reflexes and actions go.
