Unraveling the Complexities of the Nervous System

Dr. Mike introduces the nervous system, explaining how it processes information through sensory neurons and integrates it in the brain and spinal cord. Neurons and glia play key roles in this complex communication network. The central nervous system interprets signals and decides on responses, which are executed by muscles, glands, and organs. Afferent signals carry sensory information to the brain, while efferent signals send motor commands from the brain to the body.

What is the primary function of the nervous system?

• To digest food

• To circulate blood

• To process and respond to information

• To store energy

Which cells are considered the functional units of the nervous system?

• Osteocytes

• Neurons

• Epithelial cells

• Red blood cells

What role do glia play in the nervous system?

• They produce hormones

• They support and protect neurons

• They store nutrients

• They transmit electrical signals

Which of the following is NOT a type of information processed by the nervous system?

• Photosynthesis

• Touch

• Temperature

• Taste

Where is sensory information integrated in the nervous system?

• In the central nervous system

• In the heart

• In the kidneys

• In the liver

What type of muscles can the nervous system send signals to for movement?

• Skeletal muscles

• Cardiac muscles

• Smooth muscles

• All of the above

Which organ is NOT directly controlled by the nervous system?

• Lungs

• Stomach

• Heart

• Pancreas

What is an afferent signal also known as?

• Chemical signal

• Sensory signal

• Electrical signal

• Motor signal

What is the term for signals that are sent out from the central nervous system?

• Afferent signals

• Efferent signals

• Sensory signals

• Neural signals

Which of the following best describes the nervous system?

• A simple network

• A complex communication network

• A static system

• A chemical factory