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WorksheetsNervous System and Reflex arc
Total questions: 61
Worksheet time: 31mins
What is a stimulus?
Something that scares a person
A cell that detects a change
A change in the external or internal environment
A response to a change in the body
Select all examples of stimuli
Chemicals in food
Light reflecting off an object
Sound waves
Temperature of a room
What tis the function of a receptor cell?
Specialised cells that detect stimuli
Specialised cells that carry an impulse to the brain
Specialised cells that cause a change to happen in the body
Specialised cells that process information and decide what the body will do
The function of the sensory neurone is to carry the impulse from the sensory organ to the central nervous system.
True
False
Examples of sensory organs include...
Skin, ears, eyes
Brain, ears, eyes
Brain, muscles, eyes
Glands, muscles, brain
Messages travel along neurones as...
Chemicals
Electrical impulses
What is a synapse?
Part of a neurone
Part of the brain
The gap between neurones
How do impulses travel across a synapse?
Chemicals diffuse across
Electrical impulses pass across
What is the CNS?
Central nervous system (brain and spinal cord)
Continuous nervous system (brain and spinal cord)
Controlling nervous station (brain and spinal cord)
Coordination nervous system (brain and spinal cord)
What does the CNS do?
Gathers information for memories
Processes information and decides the response
A motor neurone carries impulses from the central nervous system to the effector organs.
True
False
What is the function of an effector?
Muscle or gland that brings about responses in the body
Cells that carry electrical impulses around the body
Automatic responses of the nervous system
Changes in the environment.
Homeostasis is maintaining a ___________ internal environment.
reliable
different
constant
heated
Which of these is NOT under the control of homeostasis?
Blood-glucose concentration
Nail growth
Body temperature
Water levels
The CNS consists of the (a) and spinal cord.
Nerve cells are called (a) .
The gap between two neurones is called the (a) .
Label 2
(a)
Label 4
(a)
Label 5
(a)
Which options show the correct order of the nervous system?
stimulus ---> receptor ---> sensory neurone
coordinator ---> motor neurone ---> effector
receptor ---> motor neurone ---> effector
coordinator ---> stimulus ---> response
In a reflex reaction, the electrical impulse does not reach the (a) .
Name the three different types of neurones:
sensory, generalised and motor neurones
Sensory, relay and motor neurones
Sensory, relay and effector neurones
A sense organ has lots of _________.
effectors
tissue
mitochondria
receptors
Examples of effectors include ________ and ________.
hormones
glands
muscles
brain
spinal cord
A (a) will contract
A (a) will secrete hormones or enzymes.
Where are the light receptors located?
Eye
Ear
Mouth
Nose
Where are the sound receptors located?
Eye
Ear
Mouth
Nose
Which of these are examples of reflex reactions?
Pupil in the eye changing size
Eating a cake
Knee jerk response
Sneezing
Breathing
The independent variable is the variable you...
keep the same
change
measure
The dependent variable is the variable you...
keep the same
change
measure
The control variable is the variable you...
keep the same
change
measure
This part of the neuron receives chemical messages from the neurotransmitters of other neurons. It is labeled A in the diagram.
Dendrite
Axon
Axon Terminal
Cell Body
The long, fiber like part of a neuron which the cell sends information to receiving neurons. Labelled D in diagram.
Synapse
Axon
Axon Terminal
Dendrite
_____ neurons carry messages away from the central nervous system and out to muscles or glands. The RED neuron in diagram.
sensory
motor
inter
central
Select two examples of effectors.
Neuron
Gland
Muscle
Receptor
Which type of neuron causes a muscle to contract in a reflex arc?
Motor Neuron
Sensory Neuron
Interneuron
Effector
Where would the nerve impulse start in this reflex arc?
A
C
D
E
What type of neuron is A?
Sensory
Inter
Motor
Which is the correct order of neurons in a reflex arc?
Sensory neuron, motor neuron, relay neuron
Relay neuron, sensory neuron, motor neuron
Sensory neuron, relay neuron, motor neuron
This part of the neuron receives chemical messages from the neurotransmitters of other neurons. It is labeled A in the diagram.
Dendrite
Axon
Axon Terminal
Cell Body
The long, fiber like part of a neuron which the cell sends information to receiving neurons. Labelled D in diagram.
Synapse
Axon
Axon Terminal
Dendrite
_____ neurons carry messages away from the central nervous system and out to muscles or glands. The RED neuron in diagram.
sensory
motor
inter
central
Select two examples of effectors.
Neuron
Gland
Muscle
Receptor
Which type of neuron causes a muscle to contract in a reflex arc?
Motor Neuron
Sensory Neuron
Interneuron
Effector
Where would the nerve impulse start in this reflex arc?
A
C
D
E
What type of neuron is A?
Sensory
Inter
Motor
Which is the correct order of neurons in a reflex arc?
Sensory neuron, motor neuron, relay neuron
Relay neuron, sensory neuron, motor neuron
Sensory neuron, relay neuron, motor neuron
