PLTW Lesson 2.1,2.2, 2.3

What part of the neuron is responsible for receiving signals from other neurons?

• Axon

• Dendrites

• Soma

• Myelin sheath

What is the difference between the central nervous system and the peripheral nervous system?

• The central nervous system consists of the brain and spinal cord, while the peripheral nervous system includes all other neural elements.

• The central nervous system is responsible for voluntary movements, while the peripheral nervous system controls involuntary actions.

• The central nervous system is located outside the skull and vertebral column, while the peripheral nervous system is located inside.

• The central nervous system includes all sensory organs, while the peripheral nervous system consists only of the brain.

What is the threshold in the context of neuron firing?

• The maximum level of stimulation required to trigger an action potential in a neuron.

• The minimum level of stimulation required to trigger an action potential in a neuron.

• The average level of stimulation that neurons typically receive.

• The level of stimulation that inhibits neuron firing.

What is the main function of the central nervous system?

• To regulate body temperature and maintain homeostasis.

• To incorporate information and queue a proper response.

• To produce hormones that control growth and metabolism.

• To facilitate the exchange of gases in the lungs.

What is the role of the spinal cord in the nervous system?

• To transmit signals between the brain and the rest of the body.

• To produce hormones that regulate metabolism.

• To filter toxins from the blood.

• To store memories and experiences.

What is the basic working unit of the brain and nervous system that processes and transmits information?

• Neuron

• Glial Cell

• Synapse

• Axon

What is the location at which a neuron can transfer an impulse to another cell using neurotransmitters?

• Synapse

• Axon

• Dendrite

• Myelin

Which nervous system contains sensory neurons?

• Central Nervous System

• Autonomic Nervous System

• Peripheral Nervous System

• Somatic Nervous System

What is the function of motor neurons?

• To transmit signals from the central nervous system to muscles and glands.

• To receive signals from sensory organs and transmit them to the brain.

• To connect different parts of the nervous system and coordinate responses.

• To regulate the heartbeat and control involuntary actions.

What is the protective covering that surrounds some axons?

• Myelin Sheath

• Axon Terminal

• Dendrite Covering

• Neurolemma