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The Nervous System - Coggle Diagram
The Nervous System
Made up of
Central Nervous System
Consists of
Brain
Spinal Cord
Peripheral Nervous System
Consists of
Nerves outside the Spinal Cords and the Brain
Receptors
Detects stimuli and produces
Nerves impulses
Which is
Transmitted through a synapse by chemicals and moves in one direction, since neurotransmitters are presented only on one side of a synapse and the receptors are on the other side.
Travels from
Receptors to Sensory neurone to Relay neurone to Motor neurone to Effector
The Eye
Which can adjust focus viewing distant and near objects by
Pupil Reflex
In bright light:
The circular muscles would contract, Radial muscles would relax, the pupils would become smaller which allows less light into the eyes
In dim light:
Circular muscles relax, Radial muscles would contract, Pupils would become larger, allowing more light into the eyes
Responds to light by
Accommodation
Focus on Distant objects:
Ciliary muscles relax, Suspensory ligaments taut, Lens would become thinner and would become less convex.
Focus on Nearer objects:
Ciliary muscles contract, Suspensory ligaments slacken, Lens would become thicker and would become more convex.
Allows for
Coordination and Response