Biology 1a - Human Biology 0.0 / 5 ? BiologyNervous system, hormones and behaviourGCSEAQA Created by: caitlinmithhpCreated on: 03-03-16 18:26 1. What does the nervous system do? The nervous system allows the body to respond appropriately to the environment. 1 of 21 2. What is a stimulas? a change in the environment ehich you may need to react to. 2 of 21 3. What are the five different sense organs? eyes , ears, nose , tongue and skin 3 of 21 4. What do these sense organs contain? Receptors 4 of 21 5.What are receptors? a group of cells which are sensitive to a stimulas 5 of 21 6. What do receptors do? Change stimulas energy into electrical impulses 6 of 21 7. Which receptors are in the eyes? light 7 of 21 8. Where are the sound receptors? In the ears 8 of 21 9. Which receptors are in the nose? Smell 9 of 21 10. where are the taste receptors? in the tongue 10 of 21 11. What are sensory neurones? The nerve cells that carry signals as electrical impulses from the receptors in the sense organs to the central nervous system. 11 of 21 12. Which neurones cary signals from sensory neurones to motor neurones? Relay Neurones 12 of 21 13. What are motor neurones? The nerve cells that carry signals from the central nervous system to the effectors.. 13 of 21 14. What are effectors? Muscles and glands 14 of 21 15. What is the central nervous system consisted of? The brain and spinal cord. 15 of 21 16. What is a synapse? The connection between 2 neurones 16 of 21 17. What is the nerve signal tranferred by? Neurotransmitters 17 of 21 18. What happens between stimulas and response? (flow) STIMULAS - RECEPTOR - SENSORY NEURONE - RELAY NEURONE - MOTOR NEURONE - EFFECTOR - RESPONSE 18 of 21 19. What is a reflex? Reflexes are automatic responses to certain stimuli.` 19 of 21 20. What is the passage of information in a reflex (receptor to effector) called? A reflex arc 20 of 21 21. What does the brain do? The brain coordinates a response 21 of 21
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