由2017年循人中学圣约翰救伤队课务股准备。

1. LESSON 10
~Nervous system
LESSON 11
~disorder of the nervous system and
unconsciousness

2. The purpose of the nervous system
• Controls movement
• Control the functions of the body
• Controls the levels of responsiveness

3. The constitution of the nervous system哪些
主要器官操作神经系统？
• The brain
received sense, giving order to the motor nervous
(肌肉神经)to muscles
• The spinal cord
consists of nerve tissues extending from brain
through backbones
• The nerves
when sensory nerve severed（过于激烈/受损），
will loss of sensation. If motor nerve severed, will
lost of power of movement.

4. Definition of unconscious
• The result of an interruption of the normal
activity of the brain.

5. Cause of unconscious
Fainting
Infantile convulsions
Shock
Head injury
Stroke
Heart attack
Asphyxia
Poisoning
Epilepsy
Diabetic emergency

6. Fainting
• Temporary reduction in the blood supply to the brain
Causes by?
• Long periods of standing
• Illness
• 情绪起伏过大

7. Sign and symptoms
oFace pale
oSweat on face, neck and hands
oCasualty may sway（摇动）
oUnsteady and giddy（晕）
Management
oUrge him breath deeply
oLay him down or in sit position
oLoosen tight clothing

8. The levels of responsiveness
•Alert
•Voice
•Pain
•Unresponsive
A
V
P
U

9. Examination of an unconscious
casualty