Embed Size (px)
Citation preview
INFORMATION ATTENTION:- The summary note completes family traits I,
the PowerPoint discusses as an introduction to nervous system.
Download the document and thoroughly read. Answer all questions in your basic science JS3work book. Chapters 1, 10, and 16.
Click and read note
Questions 1What is the probability that Bob will have sickle cell disease?
Choose only one optionQuestions 2
Which of the following is an example of a genetic condition?
A) MeaslesB) HaemophiliaC) Flu (influenza)
Nervous systemBy
Mr Mordi
The functions of the nervous systemThey are to collect information from the
internal and external environment.Process the information : that is interpret and Then act upon the information.
Print and paste chat belowNervous coordination
Central nervous system
Brain Spinal cord
Peripheral nervous system
Sensory system
Sensory nerves
Sense
Organs(receptors )
Somatic nervous system
Spinal nerves
Cranial nerves
Autonomic nervous
system
Sympathetic system
Para sympathetic
The membersBrainSpinal cord All the sense organs and the nerves Which include the eye, nose , ears, the tongue and the skin.
Need for a nervous systemThe body is large and complex, and so we
need to communicate fast and effectivelyThe to maintain order and smooth flow of
information, avoid confusion.
Need for a nervous systemTo group things and properly sort them in to
their proper category.To solve problems by having a good record of
past memory(association with previous events).
Need for a nervous systemTo make interpretation easy and be able to
decide what to do and so give the right instructions.
To generate (create ) new actions, words, conclusion.
How does our nervous system work then?Our sense organs contain special receptor cells
which will detect a change in our surroundings (a stimulus)
The receptor cells will change the stimulus into an electrical impulse which is passed along nerve cells
The message will usually go to the brain which will then process it
The brain then sends a message along nerves to an effector organ (usually a muscle or a gland)
The effector organ will then give a response (e.g. a muscle will move, or a gland will produce a hormone)
The parts of the brain
A cross section reveals more
