Summary: Neuroanatomy
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1 Neuroanatomy
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1.1 The Nervous System
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What are the two components of the CNS?
Brain and spinal cord -
What are the three main functions of the nervous system?
Sensory ,Integrative , andMotor functions. -
What is the function of the sensory component of the nervous system?
Receptors detect internal or external stimuli and relays information toward the CNS throughafferent (ascending)pathways . -
What does “afferent” mean in terms of neural pathways?
It means ascending—information travels from the PNS to the CNS. -
What is the role of the integrative function in the nervous system?
Analyzes, stores, and perceives sensory information. -
What is the function of the motor component of the nervous system?
Causes muscular contraction or glandular secretion through efferent (descending) pathways. -
What does “efferent” mean in neural pathways?
It means exiting—signals travel from the CNS to effectors (muscles or glands). -
What are the two main structural divisions of the nervous system?
The Central Nervous System (CNS) and the Peripheral Nervous System (PNS) -
What is the main function of the CNS?
Acts as the integrative and control center of the nervous system. -
What is the main function of the Peripheral Nervous System (PNS)?
Serves as communication lines between the CNS and the rest of the body.
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