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Introduction:
The nervous system is defined as the network of neurons spread throughout the body and
conducts the signals between different body parts. It is majorly divided into the central nervous
system and peripheral nervous system. The coordination between the two mediates different
functions performed by the body.
Answer to Problem 1TY
The correct answer is option (c) the central nervous system.
Explanation of Solution
Explanation/justification for the correct answer:
Option (c) the central nervous system. The central nervous system is mainly involved in controlling functions like movements, awareness, thoughts, sensations, memory, and speech. It consists of the brain and the spinal cord which are involved in the processing of sensory inputs and sends motor signals. Hence, this option is correct.
Explanation for incorrect answer:
Option (a) the peripheral nervous system. The Peripheral nervous system has a network of nerves present all over the body and connects to the CNS. Thus, it does not constitute the brain and the spinal cord. Hence, this option is incorrect.
Option (b) the efferent division of the nervous system. The efferent division connects the central nervous system to the effector system and thus allows the CNS to control various responses. Hence, this option is incorrect.
Option (d) autonomic nervous system. It is a division of the peripheral nervous system and regulates digestion, sexual arousal, respiration, blood pressure, and heart rate. Thus, it does not constitute the brain and the spinal cord. Hence, this option is incorrect.
Option (e) the central and peripheral nervous system. The CNS and the PNS are the two major divisions of the nervous system but the brain and the spinal cord are part of the central nervous system only. Hence, this option is incorrect.
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Chapter 33 Solutions
PRINCIPLES OF BIOLOGY W/CONNECT
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- Which of the following statements is not true about neurons? When there is no active nerve impulse, the concentration of Na+ ions outside of the cell is greater than inside the cell After a nerve impulse passes a region of the axon, that region will not be able to carry another impulse again for a brief period of time When a nerve impulse occurs, sodium channels in the axon open first, followed by potassium channels The inside of an axon is typically negatively charged compared to the outside of an axon The cell uses energy to actively pump Na+ ions into the axon and K+ ions out of the axon.arrow_forwardThe nervous system senses, interprets, and issues commands for responses to _________.arrow_forwardEach neuron potentially connects physically with a few axons with thousands of other neurons with one or two other neurons physically with dozens of neuronsarrow_forward
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