C = /6
QUIZ - NERVOUS SYSTEM
Year 5 MYP - 9th Grade
Biology
Name: ______________________________________ Date: _______________
1. The movement of which ion initiates an action
potential?
A. Calcium
B. Magnesium
C. Sodium
D. Potassium
(1)
2. In a nerve impulse, what happens at the site
following the highest point of the action potential?
A. Voltage-gated sodium ion channels open
and Na+ is pumped in.
B. Voltage-gated sodium ion channels open
and Na+ diffuses out.
C. Voltage-gated potassium ion channels open
and K+ is pumped out.
D. Voltage-gated potassium ion channels open
and K+ diffuses out.
(1)
3. What is the role of active transport in the
transmission of nerve impulses by neurones?
A. Propagates an action potential by pumping
sodium ions across the membrane out of the
neurone.
B. Propagates an action potential by pumping
sodium ions across the membrane into the
neurone.
C. Initiates the action potential needed for the
transmission of an impulse by pumping calcium
ions out of the endoplasmic reticulum.
D. Establishes the resting potential needed for the
transmission of an impulse by pumping sodium
and potassium ions across the membrane. (1)
4. Which division describes the central nervous
system?
A. Peripheral and central
B. Voluntary and involuntary nerves
C. Brain and spinal cord
D. Sensory and motor nerves
(1)
5. Which structure is responsible for passing messages
directly to effector organs?
(1)
A. B. C. D.
6. State the type of neuron that carries an impulse to a
muscle.
..............MOTOR NEURON......................................... (1)
7. Identify the labelled parts in the following diagram
of two neurons.
Presynaptic neuron
X
X
X
X
X
I ..........................
X
X
X
X
X
X
Receptor (for
neurotransmitter)
II ..........................
(2)
8. State which is the portion of the nervous system that
is considered involuntary.
...........AUTONOMIC NERVOUS SYSTEM…................... (1)
9. What substance enters the presynaptic neuron during synaptic transmission and what substance leaves it?
Substance entering presynaptic neuron
Substance leaving presynaptic neuron
A.
Neurotransmitter
Calcium ions (Ca2+)
B.
Neurotransmitter
Sodium ions (Na+)
C.
Neurotransmitter
Sodium ions (Na+)
2+
D.
(1)
Neurotransmitter
Calcium ions (Ca )