Nervous System Basics

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What is the primary function of the peripheral nervous system?

Sorting messages and channeling them to the correct part of the brain

Analyzing information and making decisions

Collecting information needed to make decisions (correct)

Controlling our voluntary movements

What is the role of the cerebrum in the nervous system?

Controlling our voluntary movements, thinking, and decision-making processes (correct)

Gathering information from the environment

Controlling our physical coordination

Helping sort messages and channeling them to the correct part of the brain

What is the term for any change in our internal or external environment?

Stimulus (correct)

Neuron

Reflex action

Sensory receptor

What is the function of the brain stem?

Helping sort messages and channeling them to the correct part of the brain (D) Signup and view all the answers

What is the term for the automatic and rapid response to a stimulus?

Reflex action (D) Signup and view all the answers

What is the bundle of fibers composed of neurons that transmit information from one body part to another?

Nerve (D) Signup and view all the answers

What is the primary function of the central nervous system?

To analyze information and make decisions (A) Signup and view all the answers

What type of nerves carry impulses away from the central nervous system?

Motor nerves (C) Signup and view all the answers

Which of the following is NOT a component of the nervous system?

Muscles (D) Signup and view all the answers

What is the function of interneurons?

To process information from sensory nerves to decide on a response (A) Signup and view all the answers

What is the role of the peripheral nervous system?

To transmit sensory information to the central nervous system (D) Signup and view all the answers

What is the primary function of sensory nerves?

To carry impulses toward the central nervous system (A) Signup and view all the answers

What is the approximate number of neurons in the human brain?

100 billion (A) Signup and view all the answers

Which part of the brain is responsible for controlling vital life functions such as breathing and heart rate?

Brainstem (A) Signup and view all the answers

What is the main function of the thalamus in the brain?

To direct information to the correct part of the cerebral cortex (C) Signup and view all the answers

What is the purpose of the hypothalamus in the brain?

To control autonomic functions such as hunger and thirst (D) Signup and view all the answers

What is the function of the spinal cord in the central nervous system?

To receive and transmit impulses (D) Signup and view all the answers

How many segments does the spinal cord have?

31 (A) Signup and view all the answers

What is the role of sensory neurons in the nervous system?

Receiving information and sending impulses to the brain or spinal cord (C) Signup and view all the answers

What is the term for the difference in electrical charge between the inside and outside of a neuron?

Membrane potential (B) Signup and view all the answers

What is the function of motor neurons in the nervous system?

Conducting impulses from the brain or spinal cord to muscles or glands (A) Signup and view all the answers

What is the term for the electrical messages sent by neurons?

Impulses (B) Signup and view all the answers

What is the role of association neurons in the nervous system?

Carrying impulses between sensory and motor neurons (C) Signup and view all the answers

What is the term for the charge of a neuron at rest?

Resting potential (C) Signup and view all the answers

What is epilepsy characterized by?

Sudden convulsions, abnormal muscle jerks, seizures, and unconsciousness (D) Signup and view all the answers

Nervous System Basics

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