Control and Coordination
Uttar Pradesh Board · Class 10 · Science
Flashcards for Control and Coordination — Uttar Pradesh Board Class 10 Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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See them allWhy do you pull your hand away immediately when you touch a hot object?
Answer
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…
What are the three main parts of a neuron and their functions?
Answer
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…
How does information travel from one neuron to another?
Answer
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…
Why is the brain protected inside a bony skull?
Answer
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 …
What happens in your body when you see a snake and get scared?
Answer
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…
Which part of the brain controls balance and posture while walking?
Answer
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…
Why does a Mimosa plant (touch-me-not) fold its leaves when touched?
Answer
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…
How do plant shoots know to grow towards light?
Answer
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…
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