EduNinja• Describe the role of the nervous system as coordination and regulation of body functions
The nervous system coordinates the responses of animals to changes in their environment.
Fig. 2.2 is a flow chart that shows how an involuntary action is controlled.
Fig. 2.2
State two ways in which a voluntary action differs from an involuntary action.
1
2
Which situation is a voluntary action?
an increase in heart rate in response to danger
blinking to avoid injury to the eye
raising your hand to answer a question
sweating in hot weather
Why are people advised not to drive a car after drinking an excessive quantity of alcohol?
Alcohol is a depressant.
Alcohol is a stimulant.
Alcohol decreases reaction time.
Alcohol is addictive.
Fig. 6.1 is a flow chart of some of the events that occur to maintain a constant body temperature.
Fig. 6.1
State the name of one effector shown in Fig. 6.1.