Coordination

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Coordination is the process by which different organs and systems of the body work together in a systematic manner to perform various functions. It is important because it ensures proper response to s…

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Stimulus is any change in the environment that triggers a response in living organisms. Response is the reaction of an organism to a stimulus. Example: When we hear a car approaching (stimulus), we mo…

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A neuron consists of: 1) Cell body (cyton) with nucleus and Nissl's granules, 2) Dendrites - short projections that receive signals, 3) Axon - long projection that carries signals, 4) Myelin sheath - …

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A synapse is the functional region of contact between two neurons where information is transmitted from one neuron to another. It consists of minute gaps between neurons. Information passes through th…

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Afferent nerves (Sensory nerves): Carry messages towards the central nervous system from sense organs and receptors. Efferent nerves (Motor nerves): Carry messages from the central nervous system to e…

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A reflex arc is a simple pathway going from detectors to spinal cord and returning to effectors. Components: 1) Receptor/Detector - detects stimulus, 2) Sensory nerve - carries signal to spinal cord, …

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CNS: Includes brain and spinal cord; coordinates all neural functions; protected by skull and vertebral column. PNS: Includes all nerves outside brain and spinal cord; consists of cranial nerves (12 p…

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1) Forebrain: Contains cerebrum (thinking, memory, reasoning), diencephalon (relay center, controls pituitary), olfactory lobes (smell). 2) Midbrain: Contains optic lobes, relays motor and sensory imp…