Trace Sensory Information Flow - 4th Grade Science
Card 1 of 20
Which part of the pathway makes the decision about what response to send?
Which part of the pathway makes the decision about what response to send?
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The CNS (brain or spinal cord). The CNS processes sensory input and determines appropriate responses.
The CNS (brain or spinal cord). The CNS processes sensory input and determines appropriate responses.
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Identify the stimulus and response in this model: bright light causes you to squint.
Identify the stimulus and response in this model: bright light causes you to squint.
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Stimulus: bright light; Response: squinting. Light is the environmental change; squinting is the body's action.
Stimulus: bright light; Response: squinting. Light is the environmental change; squinting is the body's action.
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Find and correct the pathway error: Stimulus → receptor → motor nerve → CNS → sensory nerve → effector.
Find and correct the pathway error: Stimulus → receptor → motor nerve → CNS → sensory nerve → effector.
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Stimulus → receptor → sensory nerve → CNS → motor nerve → effector. Sensory nerves must come before motor nerves in the pathway.
Stimulus → receptor → sensory nerve → CNS → motor nerve → effector. Sensory nerves must come before motor nerves in the pathway.
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Which option best completes the pathway for sweating: heat → skin receptors → CNS → ___ → sweat glands.
Which option best completes the pathway for sweating: heat → skin receptors → CNS → ___ → sweat glands.
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Motor nerves. Motor nerves connect CNS to glands for secretion responses.
Motor nerves. Motor nerves connect CNS to glands for secretion responses.
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Which option is a correct example of an effector: muscle, receptor, stimulus, or CNS?
Which option is a correct example of an effector: muscle, receptor, stimulus, or CNS?
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Muscle. Muscles contract to create movement responses.
Muscle. Muscles contract to create movement responses.
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Which option is a correct example of a receptor: skin nerve endings, biceps muscle, bone, or saliva?
Which option is a correct example of a receptor: skin nerve endings, biceps muscle, bone, or saliva?
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Skin nerve endings. Nerve endings detect touch, temperature, and pain stimuli.
Skin nerve endings. Nerve endings detect touch, temperature, and pain stimuli.
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Identify the correct order for a reflex: receptor, effector, CNS, sensory nerve, motor nerve.
Identify the correct order for a reflex: receptor, effector, CNS, sensory nerve, motor nerve.
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Receptor → sensory nerve → CNS (spinal cord) → motor nerve → effector. Reflexes follow the same pathway but bypass the brain for speed.
Receptor → sensory nerve → CNS (spinal cord) → motor nerve → effector. Reflexes follow the same pathway but bypass the brain for speed.
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What is the job of a sensory nerve (sensory neuron) in the pathway?
What is the job of a sensory nerve (sensory neuron) in the pathway?
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Carries signals from receptors to the CNS. Sensory nerves are the input pathway to the brain/spinal cord.
Carries signals from receptors to the CNS. Sensory nerves are the input pathway to the brain/spinal cord.
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What is the job of a motor nerve (motor neuron) in the pathway?
What is the job of a motor nerve (motor neuron) in the pathway?
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Carries signals from the CNS to effectors. Motor nerves are the output pathway from brain/spinal cord.
Carries signals from the CNS to effectors. Motor nerves are the output pathway from brain/spinal cord.
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What is an effector in the sensory input to response model?
What is an effector in the sensory input to response model?
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A muscle or gland that carries out the response. Effectors create the physical response to stimuli.
A muscle or gland that carries out the response. Effectors create the physical response to stimuli.
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Which part of the pathway usually makes reflex responses faster: brain or spinal cord?
Which part of the pathway usually makes reflex responses faster: brain or spinal cord?
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Spinal cord. Reflexes process in the spinal cord, skipping brain processing time.
Spinal cord. Reflexes process in the spinal cord, skipping brain processing time.
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Identify the missing step: Stimulus → receptor → sensory nerve → ___ → motor nerve → effector → response.
Identify the missing step: Stimulus → receptor → sensory nerve → ___ → motor nerve → effector → response.
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CNS. The CNS processes sensory input before sending motor commands.
CNS. The CNS processes sensory input before sending motor commands.
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Identify the missing step: Stimulus → receptor → sensory nerve → CNS → ___ → effector → response.
Identify the missing step: Stimulus → receptor → sensory nerve → CNS → ___ → effector → response.
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Motor nerve. Motor nerves carry commands from CNS to effectors.
Motor nerve. Motor nerves carry commands from CNS to effectors.
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Which option correctly labels the signal direction of a sensory nerve: to CNS or from CNS?
Which option correctly labels the signal direction of a sensory nerve: to CNS or from CNS?
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To CNS. Sensory nerves carry input signals toward the CNS.
To CNS. Sensory nerves carry input signals toward the CNS.
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Which option correctly labels the signal direction of a motor nerve: to CNS or from CNS?
Which option correctly labels the signal direction of a motor nerve: to CNS or from CNS?
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From CNS. Motor nerves carry output signals away from the CNS.
From CNS. Motor nerves carry output signals away from the CNS.
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Identify the receptor and effector in this model: touching a hot pan leads to pulling your hand away.
Identify the receptor and effector in this model: touching a hot pan leads to pulling your hand away.
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Receptor: skin; Effector: arm/hand muscles. Heat receptors detect the stimulus; muscles execute the withdrawal.
Receptor: skin; Effector: arm/hand muscles. Heat receptors detect the stimulus; muscles execute the withdrawal.
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What is the correct overall pathway from sensing a stimulus to making a response in the body?
What is the correct overall pathway from sensing a stimulus to making a response in the body?
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Stimulus → receptor → sensory nerve → CNS → motor nerve → effector → response. This sequence shows how the body processes and responds to stimuli.
Stimulus → receptor → sensory nerve → CNS → motor nerve → effector → response. This sequence shows how the body processes and responds to stimuli.
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What is a stimulus in a sensory input to response model?
What is a stimulus in a sensory input to response model?
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A change in the environment that can be detected. Examples include light, sound, touch, or temperature changes.
A change in the environment that can be detected. Examples include light, sound, touch, or temperature changes.
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What is a receptor in the sensory input to response model?
What is a receptor in the sensory input to response model?
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A structure that detects a stimulus and starts a nerve signal. Receptors convert stimuli into electrical nerve signals.
A structure that detects a stimulus and starts a nerve signal. Receptors convert stimuli into electrical nerve signals.
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What is the central nervous system (CNS) in a sensory model?
What is the central nervous system (CNS) in a sensory model?
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The brain and spinal cord. The CNS processes sensory information and coordinates responses.
The brain and spinal cord. The CNS processes sensory information and coordinates responses.
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