The Nervous System
Subjects / Biology / Organ Systems
The nervous system is a network of specialised cells that work together to coordinate the actions of the body. With the human nervous system we can receive information from the outside environment, and make sense of it. Once we've processed this information, we can build up a complicated internal model of what the world is like. In this title we'll learn about the different parts of the nervous system, and how messages are sent around the body. We'll also look at how signals are sent down neurones and learn about the action potential, and the chemical ions that enable the message to be sent.
| Author: | Dr Eliot Attridge | Publisher: | GCSEPod® |
| Narrator: | Pauline Addis | ISBN: | 978-1-84906-284-8 |
| Video ISBN: | 978-1-84906-784-3 |
Chapters
- The Nervous System and Nerves
- The Pathway of Electrical Impulses
- Voluntary and Reflex Actions
- The Eye
Exam Board Relevance
- Edxcel
- AQA
- CEA
- IGCSE (EdExcel)
- OCR
- SQA
- WJEC
- IGCSE (CiE)
Includes original GCSEPod image art. Additional pictorial images created by Damon Smith
Curriculum and Exam Board Information
Key Issues
Titles
Chapters
- Accommodation of the eye to near and distant objects
- adrenaline in preparation for flight or fight
- coordinators - the simple function of the brain and spinal cord in coordinating responses; a reflex arc
- coordinators - the simple function of the brain and spinal cord in coordinating responses; reflex arc in terms of sensory association and motor neurones
- coordinators - the simple function of the brain and spinal cord in coordinating responses; voluntary and reflex actions
- describe the passage of the nerve impulse through a reflex arc
- effectors - the antagonistic action and function of muscles at a joint, limited to the elbow joint
- explain how changes in the diameter of the blood vessels of the skin (vasodilation and vasoconstriction) are controlled by the nervous system and help to keep body temperature constant
- explain that blood temperature and glucose are monitored by receptors which transmit information to the brain, bringing into place control mechanisms
- insulin control of blood sugar levels; (diabetes as a condition in which this mechanism breaks down)
- know that behaviour can be explained in terms of receptors, coordinators and effectors
- know that the nervous system uses nerves to communicate information rapidly around the body coordinated by the central nervous system (brain and spinal cord)
- Pathway taken by electrical impulses along a sensory, relay and motor neurone to an effector
- recall that hormones bring about slower changes in our bodies, such as controlling our growth and development
- recall that the nervous system helps us to deal rapidly with situations such as keeping our body temperature constant at 37°C
- receptors - the eye; structure and function of the conjunctiva, cornea, pupil, iris, lens, retina and optic nerve
- skin, including temperature control
- The effect of solvents, alcohol and tobacco on the body
- The effects of drugs (stimulants, sedatives, hallucinogens and pain killers) on the body
- The nervous system and nerves
- The path of electrical impulses in a simple reflex arc
- The role of the iris, pupil, retina and optic nerve in response to light
- The structure and function of a neurone
- The uses of heroin in pain relief and the dangers of addiction
- understand the function and role of hormones in coordination in humans
- Voluntary and reflex responses
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