Control and Coordination

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This is a reflex action. Heat receptors in your skin detect danger and send signals through sensory neurons to the spinal cord. The spinal cord directly sends a signal back through motor neurons to mu

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1. Dendrite: Receives information/signals from other neurons or receptors. 2. Cell body: Contains nucleus and processes the information. 3. Axon: Transmits electrical impulses away from cell body to o

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Information travels as electrical impulses along the axon. At the synapse (gap between neurons), the electrical impulse triggers release of chemical messengers (neurotransmitters). These chemicals cro

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The brain is extremely delicate and controls all vital functions. The bony skull provides hard protection from physical damage. Additionally, the brain is surrounded by cerebrospinal fluid which acts

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Your adrenal glands release adrenaline hormone into blood. This causes: heart rate to increase (more oxygen to muscles), breathing rate to increase, blood flow redirects from digestive system to skele

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Cerebellum (part of hind-brain) controls balance, posture, and coordination of voluntary movements. It ensures smooth, precise movements and maintains body equilibrium. Damage to cerebellum causes los

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When touched, electrical-chemical signals travel through the plant. Specialized cells at the base of leaflets rapidly lose water, causing them to shrink and fold the leaves. This movement doesn't invo

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Plant shoots show phototropism. When light comes from one side, auxin hormone moves to the shaded side of the shoot. Higher auxin concentration on the shaded side makes those cells grow longer, causin