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Worksheets[15 Aug] S4: Prelim Revision II
Total questions: 6
Worksheet time: 30mins
Which of the following would be a consequence of the optic nerve being cut?
An image would not be formed on the retina.
The brain would not be able to send any nerve impulses.
The photoreceptors of the retina cannot be stimulated.
The pupil reflex would fail to function.
Which of the following correctly describes a reflex arc?
the longest pathway by which nerve impulses travel from the receptor to the effector in a reflex action
the shortest pathway by which nerve impulses travel from the receptor to the central nervous system in a reflex action
the shortest pathway by which nerve impulses travel from the central nervous system to the effector in a reflex action
the shortest pathway by which nerve impulses travel from the receptor to the effector in a reflex action
Our eyes feel strained when we read small prints for a long period of time. Which of the following is the correct explanation for the incident described above?
The ciliary muscles become fatigued.
The optic nerve will no longer transmit impulses to the brain.
The retina will no longer record clear images.
The suspensory ligaments become stretched.
The diagram shows part of the spinal cord and some neurones which are connected to the leg of a patient. Which of the following correctly describes the function of X?
It connects the receptor to the spinal cord.
It relays impulses within the central nervous system.
It relays impulses within the peripheral nervous system.
It transmits nerve impulses within the spinal cord.
When the pupil of the eye dilates in response to low light intensity, which is the receptor and which is the effector?
A
B
C
D
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