2nd year bio ch nervous coordination

Which type of neuron carries signals from sensory receptors to the central nervous system?

• Motor neurons
• Sensory neurons
• Interneurons
• Efferent neurons

What is the function of motor neurons?

• To transmit sensory signals
• To connect different regions of the brain
• To send signals from the CNS to muscles
• To process sensory information

Which type of neuron connects sensory and motor neurons and is involved in processing information?

• Sensory neurons
• Interneurons
• Motor neurons
• Glial cells

What is the correct order of components in a reflex arc?

• Stimulus → Sensory neuron → Integration center → Motor neuron → Effector
• Effector → Sensory neuron → Integration center → Motor neuron
• Stimulus → Motor neuron → Sensory neuron → Integration center
• Sensory neuron → Integration center → Effector → Motor neuron

Which part of the reflex arc detects the stimulus?

• Sensory neuron
• Receptor
• Effector
• Integration center

What is the role of the integration center in a reflex arc?

• To detect the stimulus
• To process the sensory input and generate an output
• To carry the motor signal to muscles
• To transmit the response to the brain

In a simple reflex arc, which part of the nervous system is not typically involved?

• Central nervous system (CNS)
• Brain
• Spinal cord
• Peripheral nervous system

What is an example of a reflex that involves the spinal cord but not the brain?

• Patellar reflex
• Visual reflex
• Pupillary reflex
• Conscious decision-making

What is the primary ion responsible for the depolarization of a neuron during an action potential?

• Sodium (Na⁺)
• Potassium (K⁺)
• Calcium (Ca²⁺)
• Chloride (Cl⁻)

What happens during the repolarization phase of an action potential?

• Sodium channels open
• Potassium channels open
• Calcium ions enter the cell
• Sodium ions exit the cell