Reflexes

Explain reflex.

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NGSS.MS-LS1-8

If you were to touch the spine on a cactus, what would be the correct order of the reflex response?

• sensory neuron, brain, motor neuron

• motor neuron, brain, sensory neuron

• motor neuron, sensory neuron, brain

• sensory neuron, motor neuron, brain

Tags

NGSS.MS-LS1-8

What are reflexes?

• Actions performed in response to a stimulus with conscious thought

• Actions performed in response to a stimulus without conscious thought

• Actions performed in response to a stimulus with deliberate actions

• Actions performed in response to a stimulus with decision making

How are reflexes and the Central Nervous System related?

• They are not related

• Reflexes are controlled by the Central Nervous System

• Reflexes are independent of the Central Nervous System

• Reflexes are only related to the brain

What is the purpose of reflex actions?

• To involve the brain in the response to a stimulus

• To perform deliberate actions in response to a stimulus

• To automatically and quickly respond to stimuli without conscious thought

• To follow a sequence that involves the conscious part of the brain

How do reflexes help us?

• By minimizing potential damage to the body

• By involving the brain in the reflex actions

• By reducing the chances of being injured or killed

• By following a sequence that involves the brain

Tags

NGSS.MS-LS1-8

What is a reflex action?

• An involuntary and nearly instantaneous movement in response to a stimulus

• A voluntary action controlled by the brain

• A delayed response to a stimulus

• A conscious decision to move

Tags

NGSS.MS-LS1-8

Which part of the nervous system is primarily responsible for reflex actions?

• The brain

• The spinal cord

• The peripheral nerves

• The autonomic nervous system

What is the role of sensory neurons in a reflex arc?

• To carry signals from the brain to muscles

• To transmit signals from sensory receptors to the central nervous system

• To process information in the brain

• To connect motor neurons to muscles

In a knee-jerk reflex, what is the correct sequence of events?

• Sensory neuron activation, spinal cord processing, motor neuron activation

• Motor neuron activation, brain processing, sensory neuron activation

• Brain processing, sensory neuron activation, motor neuron activation

• Spinal cord processing, brain processing, motor neuron activation