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Introduction to the Nervous System Quiz

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Questions and Answers

What are the major functions of the nervous system?

Pumping blood throughout the body

Regulating body temperature

Digesting food and absorbing nutrients

Receiving stimuli and relaying sensory information, integrating incoming information, and sending out efferent messages (correct)

Which components make up the nervous system?

The muscles, bones, and skin

The heart, lungs, and kidneys

The brain, liver, and stomach

The brain, spinal cord, and nerves (correct)

Why is the nervous system sometimes known as the body's fast-acting control system?

Because it regulates body functions via rapid electrical impulses (correct)

Because it helps in digestion

Because it aids in blood circulation

Because it controls body temperature

What does Unit 15 entail a detailed study of?

The structure and function of the central nervous system Signup and view all the answers

In addition to the brain and spinal cord, what else does the nervous system consist of?

Nerves Signup and view all the answers

What does Unit 16 provide a detailed study of?

The structure and function of the peripheral nervous system Signup and view all the answers

Which organ system is known as the slow-acting control system of the body?

Endocrine system Signup and view all the answers

What is the physiological significance of the presence of myelin on an axon?

Provides insulation and speeds up the transmission of nerve impulses Signup and view all the answers

Which motor response will be used to calculate reaction time?

Voluntary muscle contraction Signup and view all the answers

How does a motor neuron differ from a sensory neuron?

Motor neurons transmit signals from the central nervous system to muscles and glands, while sensory neurons transmit signals from muscles and glands to the central nervous system. Signup and view all the answers

Which three types of stimuli will be tested during the activity investigating reaction time?

Auditory, visual, and olfactory stimuli Signup and view all the answers

What is the role of the thalamus in a neural pathway?

Relay of electrical impulse to cerebral cortex Signup and view all the answers

What is the function of Nissl bodies in a motor neuron?

Generation of electrical impulses Signup and view all the answers

Which component transduces the stimulus into an electrical impulse in a neural pathway?

Sensory receptor Signup and view all the answers

What is the role of association areas in a neural pathway?

Interpretation of meaning of stimulus Signup and view all the answers

What is the primary difference between chemical synaptic transmission and electrical synaptic transmission?

Chemical transmission involves the release of neurotransmitters, while electrical transmission involves direct flow of ions between cells. Signup and view all the answers