Neural Control and Coordination

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Coordination is the process through which two or more organs interact and complement each other's functions to maintain homeostasis. It is essential because all organ systems must work together in a s

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The two main coordinating systems are: 1) Neural System - provides point-to-point connections for quick coordination through electrical impulses, and 2) Endocrine System - provides chemical integratio

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The human neural system is divided into: 1) Central Neural System (CNS) - includes brain and spinal cord, site of information processing and control, and 2) Peripheral Neural System (PNS) - comprises

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Afferent nerve fibres transmit impulses FROM tissues/organs TO the CNS (sensory information - 'arriving' at CNS). Efferent nerve fibres transmit regulatory impulses FROM the CNS TO peripheral tissues/

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The PNS has two divisions: 1) Somatic Neural System - relays impulses from CNS to skeletal muscles (voluntary movements), and 2) Autonomic Neural System - transmits impulses from CNS to involuntary or

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A neuron has three major parts: 1) Cell Body - contains cytoplasm, organelles, and Nissl's granules, 2) Dendrites - short, branched fibres that transmit impulses TOWARDS the cell body, and 3) Axon - l

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Nissl's granules are granular bodies found in the cell body and dendrites of neurons. Synaptic knobs are bulb-like structures at the terminal ends of axon branches that contain synaptic vesicles fille

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Based on axon and dendrite number, neurons are: 1) Multipolar - one axon and two or more dendrites (found in cerebral cortex), 2) Bipolar - one axon and one dendrite (found in retina), and 3) Unipolar