Lesson 27: Sense organs

Hi,

More on the nervous system and the eye. Please remember that only the eye and skin are in the syllabus now. The other sense organs are still very interesting, but they will not be tested in the exams.

This set of slides contain the following:

• sense organs eye and skin, and nervous system and reflex actions
• stimulus, receptor, coordination, effector, response sequences
• nerve cell, labels, annotation
• how synapse works
• pupil reflex, blink reflex, cough reflex
• labels in reflex actions, annotated diagram
  
• eye, labels, annotations
• compare eye with camera in its functions
• short and long-sightedness
  
• short questions
  

Remember not to dwell too much on the ear, tongue, nose, other parts which will not be tested in your examinations.

Unit 5 Nervous System And The Senses

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Cheers

Lesson 22: Nervous system and reflex actions

Hi,

This topic is quite difficult for most students. I hope these Powerpoint slides will be of help.
Coverage includes:

• details of neuron, detailed explanation of its parts and how it functions
• spinal cord being a link between the brain and the other parts of the body
• reflexes being processed at the spinal cord
  
• definition of reflex action
• eye, its labels, processes involved in sight
• quiz
  

Please ignore the following parts that will not be tested in your exams as they are no more in your syllabus: sodium-potassium pump, details of brain and how it works, details of synapse, ear and tongue.

Chapter 35 lecture- Nervous System

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Cheers