Nervous System Review 2

What are the major organs and structures of the nervous system?

• Heart, lungs, and stomach

• Brain, spinal cord, and nerves

• Liver, kidneys, and pancreas

• Muscles, bones, and skin

What is the function of the nervous system that involves being aware of what is happening in the environment?

• Maintaining homeostasis

• Receiving information

• Digesting food

• Circulating blood

What is a stimulus in the context of the nervous system?

• A type of cell

• A change or signal in the environment

• A part of the brain

• A muscle contraction

What are neurons?

• Cells that carry oxygen

• Cells that carry information through the nervous system

• Cells that produce energy

• Cells that fight infections

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What is the role of synapses in the nervous system?

• They store energy

• They connect neurons indirectly

• They produce hormones

• They filter blood

Diagram of a neuron showing dendrites, cell body, axon, and axon tips.

• Diagram of a neuron showing dendrites, cell body, axon, and axon tips.

• Diagram of a glial cell displaying myelin sheath and support functions.

• Diagram of a blood cell highlighting nucleus and cytoplasmic content.

• Diagram of a muscle cell illustrating sarcomeres and myofibrils.

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What is the function of a sensory neuron?

• Detects a stimulus and changes it to a nerve impulse.

• Receives the nerve impulse and moves it on.

• Sends an impulse to a muscle or gland.

• Stores information in the brain.

Which type of neuron acts as the "middle man" by receiving and moving the nerve impulse?

• Sensory neuron

• Motor neuron

• Interneuron

• Reflex neuron

What is an example of a voluntary response?

• Using a fork

• Stomach moving food

• Reflex action

• Heart beating

What is a reflex?

• An involuntary response that allows quick action for protection

• A voluntary action using muscles

• A type of sensory neuron

• A conscious decision to move