Neural Control and Coordination
Touch a hot cup and your hand is away before you feel the heat. A message has run to the spinal cord and back in a few hundredths of a second. In this chapter you open up the nerve cell and see how it makes an electrical signal and passes it on. Then you map the brain and the spinal cord, follow a reflex arc, and look into the eye and the ear. Python works out the voltage of a nerve cell, the speed of a message and the time a reflex takes. It serves the Indian syllabus (NCERT, NEET) and the matching topic of A-Level, IB and AP.
Part of Biology · High School (11–12) (chapter 17)
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The Neuron and the Nerve Impulse
How is a message made in a nerve cell, and how does it cross to the next one? You build a neuron, read the voltage of its membrane at rest and during an impulse, and see why a coat of myelin makes a message faster. It serves the Indian syllabus (NCERT, NEET) and the matching topic of A-Level, IB and AP.
The Brain, the Spinal Cord and Reflexes
Which part of the brain keeps you breathing, and which part lets you read this line? You map the forebrain, the midbrain and the hindbrain, look at the spinal cord, and trace a reflex from the skin to the muscle and back. It serves the Indian syllabus (NCERT, NEET) and the matching topic of A-Level, IB and AP.