Intervensi biology Form 5 chapter 1

1. INTERVENTION – BIOLOGY CHAPTER 12
CHAPTER 12 : COORDINATION AND RESPONSE
1. The figure below shows a reflex arc.
(a) Fill in the blanks.
Step Description of a reflex action
1 The sharp needle that pokes the finger act as a ……………………….
2 The sensory ………………….. for pain at the skin receives the stimulus.
3 The sensory receptor produces ……………….. impulse.
4 The impulse is sent by the ………………… neuron to the spinal cord.
5 The afferent neuron will synapse with the …………………… found in the
…………….. matter of the spinal cord.
6 The interneuron will form a synapse with the ………………… neuron.
7 The efferent neuron will bring the nerve impulse to the ………………… which
consists of muscles.
8 The muscles will ……………… and pull the hand away from the stimulus.
(b) Name the structure labelled J – N.
Label Name
JKLMN
needle
N
J
L
K
M

2. INTERVENTION – BIOLOGY CHAPTER 12
Corrective mechanism
Corrective mechanism
Pancreas
secretes
glucagon
Normal glucose level
glucose level
rises
glucose level
falls
glucose
level is
lowered
glucose
level
rises
Normal glucose level