Nerve Cells & Impulses

What is the primary role of a neuron?

• Support the nervous system

• Transmit messages within the nervous system

• Produce hormones

• Provide structural support

Which of the following are the primary cells in the nervous system?

• Glial cells and red blood cells

• Neurons and glial cells

• Neurons and fibroblasts

• Myocytes and glial cells

Which of the following theorized that individual cells in the nervous system remained separate?

• Santiago Ramón y Cajal

• Charles Darwin

• Sigmund Freud

• Ivan Pavlov

Which part of the nervous system does the brain and spinal cord belong to?

• Peripheral nervous system

• Central nervous system

• Autonomic nervous system

• Sympathetic nervous system

What is the primary role of glial cells?

• Send messages within the nervous system

• Support neurons and maintain the nervous system

• Contract muscles

• Carry nutrients

What is the function of dendrites?

• Carry messages to axon terminals

• Receive messages from other neurons

• Send electrical signals

• Insulate axons

Which of the following neurons carries information from the senses to the central nervous system?

• Motor neurons

• Interneurons

• Sensory neurons

• Schwann cells

What is the role of motor neurons?

• Carry sensory information to the brain

• Send commands to muscles from the central nervous system

• Regulate blood flow

• Remove waste materials from neurons

Which of the following cells make up the bulk of neurons in the brain?

• Motor neurons

• Sensory neurons

• Interneurons

• Astrocytes

Which glial cell helps synchronize axon activity?

• Microglial cells

• Astrocytes

• Schwann cells

• Oligodendrocytes