REFLEX ACTION GRADE 10

1.What is a reflex action?

• An involuntary and automatic response to a stimulus.
• A response that occurs only in humans.
• A learned response to a stimulus.
• A conscious and deliberate response to a stimulus.

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

• The part of the nervous system primarily responsible for reflex actions is the spinal cord.
• The part of the nervous system primarily responsible for reflex actions is the cerebellum.
• The part of the nervous system primarily responsible for reflex actions is the peripheral nerves.
• The part of the nervous system primarily responsible for reflex actions is the brain.

•3. In a reflex arc, the sensory neuron transmits information from the receptor to the:

• motor neuron
• effector
• interneuron
• brain

•What is the function of the interneuron (relay neuron) in a reflex arc?

• Amplify the signals between sensory neurons and motor neurons
• Inhibit the signals between sensory neurons and motor neurons
• Generate electrical signals in response to stimuli
• Transmit signals between sensory neurons and motor neurons

5. When you touch a hot object, you quickly withdraw your hand. This is an example of a:

• voluntary action
• reflex action
• instinctive reaction
• conscious decision

•6. What is the purpose of a reflex action in the body?

• To regulate body temperature
• To enhance sensory perception
• To protect the body from harm or danger
• To facilitate digestion

•7. Which of the following is an example of a reflex action?

• Knee jerk reflex
• Solving a math problem
• Blinking of the eye
• Digesting food

•8. What type of reflex is the withdrawal of a hand upon touching a hot surface?

• Spinal reflex
• Somatic reflex
• Cranial reflex
• Autonomic reflex

•9. Reflex arcs involve the following components: sensory receptor, sensory neuron, interneuron, motor neuron, and:

• effector
• receptor
• stimulus
• reflex

•10. Which part of the nervous system is responsible for voluntary actions?

• The peripheral nervous system
• The part of the nervous system responsible for voluntary actions is the somatic nervous system.
• The autonomic nervous system
• The central nervous system