Exploring the Functions of the Nervous System

The video explores the nervous system, focusing on its structure and function. It explains how neurons transmit signals, the roles of the central and peripheral nervous systems, and the somatic and autonomic systems. The video also covers neuron anatomy, action potentials, and uses a pizza example to illustrate these concepts.

What is the primary function of the nervous system?

• To digest food

• To transmit electrochemical signals

• To pump blood

• To produce hormones

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Which cells are primarily responsible for transmitting signals in the nervous system?

• Neurons

• Epithelial cells

• Red blood cells

• Muscle cells

What are the two main departments of the nervous system?

• Somatic and Autonomic

• Afferent and Efferent

• Central and Peripheral

• Sympathetic and Parasympathetic

What type of neurons carry information to the brain and spinal cord?

• Motor neurons

• Efferent neurons

• Interneurons

• Afferent neurons

Which system controls voluntary movements and sensory information?

• Sympathetic division

• Somatic nervous system

• Parasympathetic division

• Autonomic nervous system

What is the reflex loop responsible for?

• Regulating heartbeat

• Controlling digestion

• Making decisions before the brain

• Sending signals to the brain

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Which division of the autonomic nervous system is responsible for the fight-or-flight response?

• Sympathetic division

• Parasympathetic division

• Somatic nervous system

• Central nervous system

What does the parasympathetic division do?

• Dilates pupils

• Encourages relaxation and digestion

• Increases heart rate

• Activates adrenal cortex

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What is the function of the myelin sheath?

• To transmit signals

• To receive information

• To insulate the axon

• To produce neurotransmitters

What is the process called when the action potential jumps from node to node?

• Synaptic transmission

• Neuronal hopping

• Saltatory conduction

• Axonal transport