Neurons & Nerve Action

What is the main function of the dendrites in a neuron?

• To transmit signals away from the cell body

• To receive signals from other neurons

• To insulate the axon

• To produce neurotransmitters

Which part of the neuron is responsible for transmitting electrical impulses away from the cell body?

• Dendrites

• Axon

• Synapse

• Myelin sheath

What is the role of the myelin sheath in a neuron?

• To produce neurotransmitters

• To speed up the transmission of nerve impulses

• To receive signals from other neurons

• To connect neurons to blood vessels

Which type of neuron is responsible for carrying signals from the central nervous system to muscles?

• Sensory neurons

• Motor neurons

• Interneurons

• Relay neurons

What type of neuron carries information from sensory receptors to the central nervous system?

• Motor neurons

• Sensory neurons

• Interneurons

• Relay neurons

Which type of neuron is primarily found in the central nervous system and acts as a link between sensory and motor neurons?

• Sensory neurons

• Motor neurons

• Interneurons

• Relay neurons

In a reflex arc, what is the correct order of the pathway?

• Receptor → Sensory neuron → Motor neuron → Effector

• Effector → Motor neuron → Sensory neuron → Receptor

• Receptor → Sensory neuron → Interneuron → Motor neuron → Effector

• Motor neuron → Interneuron → Sensory neuron → Receptor

What is the role of the effector in a reflex arc?

• To detect the stimulus

• To process the information

• To carry out the response

• To transmit the signal to the brain

Which of the following best describes a reflex action?

• A voluntary response to a stimulus

• An involuntary and immediate response to a stimulus

• A delayed response to a stimulus

• A conscious decision to respond to a stimulus

What is the function of neurotransmitters in the nervous system?

• To insulate neurons

• To transmit signals across synapses

• To protect the brain

• To store genetic information