Page 40 - Biology_Form_3
P. 40
Biology for Secondary Schools
Parasympathetic Sympathetic
Constricts pupil Dilates pupil
Inhibit flow of saliva
Stimulates flow of saliva
FOR ONLINE READING ONLY
Accelerates heartbeat
Slows heartbeat
Dilates bronchi
Constricts bronchi
Inhibits peristalsis
Stimulates peristalsis Conversion of glycogen
to glucose
Stimulates glucose Secretion of adrenaline
storage and noradrenaline
Stimulates bladder Inhibits bladder contraction
contraction
Figure 2.11: Sympathetic and parasympathetic nervous system.
Activity 2.4: Procedure
Observe the chart or diagram of
Exploring the autonomic nervous system autonomic nervous system and match
in ‘flight or rest’ (or identifying and the flashcards of organs reactions
exploring the reaction of the sympathetic for sympathetic and parasympathetic
and parasympathetic nervous systems) reflex.
Materials Question
Chart or diagram of autonomic 1. Explain the scenario and reactions
nervous system showing human in each organ for sympathetic and
organs involved in parasympathetic parasympathetic reflex.
and sympathetic nervous system 2. Tabulate the name of the organ and
(Figure 2.10), flashcard of reactions the reaction related to sympathetic
of sympathetic and parasympathetic or parasympathetic reflex.
influence
33 Student’s Book - Form Three
23/10/2025 11:52:34
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 33 KAMISHNA 23/10/2025 11:52:34 KAMISHNA
BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd 33
