BIOM 2000 Lecture Notes - Lecture 2: Spinal Nerve, Cranial Nerves, Endocrine System

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Week 3: pages 225 - 229
Unit 2: The Nervous System
Chapter 7: 225-229, 237-250, 278-301
The NS is the master controlling and communicating system. It works with
the endocrine system to regulate and maintain homeostasis.
The NS controls rapid electrical nerve impulses whereas the endocrine
system produce hormones that are released into the blood in a more
leisurely fashion.
The Nervous system has three functions:
1- It uses its millions of sensory receptors to monitor changes both inside and
outside the body. these changes are called stimuli and the gathered
information is called sensory input
2 - it processes and interprets the sensory input and decides what should be
done at each moment- a process called integration
3- it then effects or causes a response by activating the muscles or glands
(effectors) via motor output.
Rem Ch. 1 pf 12 (feedback loop)
Organization of the Nervous System
- General functions of the nervous system (NS)
- Structural and functional classification of NS
- Define CNS and PNS
The NS is divided into structural classification and functional classification.
The STRUCTURAL CLASS includes all NS organs and divides into CNS and
PNS.
CNS consists of the brain and spinal cord
- Acts as the integrating and command centres
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