Embarking on a journey through ch 7 the nervous system answer key, we unveil the intricate tapestry of the human nervous system. This comprehensive guide unravels the complexities of neurons, neuroglia, and nerve impulses, providing a foundational understanding of the system that governs our thoughts, actions, and sensations.
Delving deeper into the central nervous system, we explore the enigmatic brain and its intricate structures, including the cerebrum, cerebellum, and brainstem. The spinal cord, a vital conduit of information, is meticulously examined, shedding light on its role in transmitting signals between the brain and the body’s periphery.
Nervous System Overview: Ch 7 The Nervous System Answer Key
The nervous system is the master control system of the body, responsible for receiving, processing, and responding to internal and external stimuli. It consists of two major divisions: the central nervous system (CNS) and the peripheral nervous system (PNS).The CNS, consisting of the brain and spinal cord, serves as the command center of the body, processing information and sending out commands to control body functions.
The PNS, on the other hand, comprises all the nerves that connect the CNS to the rest of the body, transmitting sensory and motor signals.Neurons, the fundamental units of the nervous system, are specialized cells responsible for transmitting nerve impulses.
Neuroglia, on the other hand, are supporting cells that provide structural and functional support to neurons.The electrical and chemical basis of nerve impulses involves the movement of ions across the neuronal membrane, generating an electrical signal that propagates along the axon.
Neurotransmitters, chemical messengers, facilitate communication between neurons at synapses.
Questions and Answers
What are the major divisions of the nervous system?
The nervous system is divided into two major divisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
What is the function of neurons?
Neurons are the basic units of the nervous system and are responsible for transmitting information throughout the body.
What is the difference between neurons and neuroglia?
Neurons are excitable cells that transmit information, while neuroglia are non-excitable cells that provide support and protection for neurons.
What is the electrical and chemical basis of nerve impulses?
Nerve impulses are electrical signals that travel along the axons of neurons. They are generated by the movement of ions across the neuronal membrane.
