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Welcome to Medical Students
We upload Study materials, MCQs For Class 11th and 12th Medical.
15/04/2026
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Medical Students
13/02/2026
A neuron is the fundamental building block of the nervous system. Think of it as a specialized "messenger" cell designed to transmit information throughout your body using electrical impulses and chemical signals.
Unlike most cells, neurons don't just sit there—they are part of a massive, high-speed biological circuit that controls everything from your heartbeat to your deepest thoughts.
Anatomy of a Neuron
To understand how they work, it helps to look at their unique structure, which is built specifically for communication.
* Dendrites: These are the "antennae." They receive incoming signals from other neurons and carry them toward the cell body.
* Soma (Cell Body): The command center. It contains the nucleus and maintains the cell’s health and function.
* Axon: A long, tail-like cable that carries the electrical impulse away from the cell body toward other neurons or muscles.
* Myelin Sheath: An insulating layer of fat wrapped around the axon. It acts like the rubber coating on a wire, allowing signals to travel much faster.
* Axon Terminals: The exit points. This is where the electrical signal is converted into a chemical message to jump to the next cell.
How They Communicate
The magic happens at the synapse, the tiny gap between two neurons.
* Electrical Phase: An electrical pulse called an action potential travels down the axon.
* Chemical Phase: When the pulse hits the terminals, it triggers the release of neurotransmitters (like dopamine or serotonin).
* The Jump: These chemicals float across the synapse and "unlock" receptors on the next neuron, starting the process all over again.
Fun Fact: Speed and Scale
* Speed: Nerve impulses can travel at speeds of up to 120 meters per second (about 270 mph).
* Quantity: Your brain contains roughly 86 billion neurons, forming trillions of connections. If you lined them up, they’d stretch for miles!
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07/02/2025
SCIENTIFIC🧬 NAME
1. Man - Homo sapiens
2. Paddock - Rana Tigrina
3. Cat - Felis Domestica
4. Dog - Canis Families
5. Cow - Boss Indicus
6. Buffalo - Bubalis Bubalis
7. Bull - Boss Primitive Tars
8. Goat - Kepta Hitamus
9. Sheep - Ovi's Arise
10. Pig - Susphroca domestica
11. Lion - pantheon Leo
12. Tiger - Panthera tigris
13. Cheetah - Panther Pardus
14. Bear - Ursus matitimus carnivera
15. Rabbit - Orictolegus cuniculus
16. Deer - Cervus elaphus
17. Camel - Camelus Domedarius
18. Vixen - Canidae
19. Langur - Hominodia
20. Reindeer - Ruservus duvacelli
21. Fly - Masca Domestica
22. Mango - Magnifera indica
23. Paddy - Oriya Sativat
24. Wheat - Tricticum aestivium
25. Peas - Pisum Sativium
26. Mustard - Brassica Compastories
27. Peacock - Pavo Christace
28. Elephant - Ephilas indica
29. Dolphin - Platenista Ganketica
30. Lotus - Nelumbo nucifera Garten
31. Banyan - Ficus Bandhalensis
32. Horse - Equus Cabellas
33. Sugarcane - Sugarcane Officium
34. Onion - Allium Sepia
35. Cotton - Gasipeum
36. Peanut - Arachis
37. Coffee - Coffea Arabica
38. Tea - Thia sinensis
39. Angur - Vitius
40. Turmeric - I will take crisp
41. Maize - Jia table
42. Tomato - Lycopresican esculentum
43. Coconut - Cocoa Nucifera
44. Apple - Melas pumia / Domestica
45. Pear - Pyrus couminis
46. Saffron - Crocus sativius
47. Cashew - Anacardium aromaticum
48. Carrot - Dakas carota
49. Ginger - Jinjibar Officinal
50. Cauliflower - Brassica oleracea
⑉⑉⑉⑉⑉⑉⑉⑉⑉༄༄༄⑉⑉⑉⑉⑉⑉⑉⑉⑉⑉
Q) A body weighs 72 N on the surface of the Earth. What is the gravitational force on it, at height equal to half the radius of Earth?
i) 32 N ii) 30 N iii) 24 N iv) 48 N
➡️ Root Anatomy:
1. Primary Structure:
- Epidermis (outermost layer)
- Cortex (inner to epidermis)
- Endodermis (inner to cortex)
- Pericycle (inner to endodermis)
2. Secondary Structure:
- Vascular Cambium (produces secondary xylem and phloem)
- Secondary Xylem (conducts water and minerals)
- Secondary Phloem (conducts food)
3. Modifications:
- Tap root
- Fibrous root
- Adventitious root
➡️ Stem Anatomy:
1. Primary Structure:
- Epidermis (outermost layer)
- Cortex (inner to epidermis)
- Vascular Bundle (xylem and phloem)
2. Secondary Structure:
- Vascular Cambium (produces secondary xylem and phloem)
- Secondary Xylem (conducts water and minerals)
- Secondary Phloem (conducts food)
3. Modifications:
- Herbaceous stem
- Woody stem
➡️ Leaf Anatomy:
1. Epidermis (outermost layer)
2. Mesophyll (inner to epidermis)
- Palisade tissue (photosynthesis)
- Spongy tissue (gas exchange)
3. Vascular Bundle (xylem and phloem)
4. Modifications:
- Simple leaf
- Compound leaf
➡️ Flower Anatomy:
1. Sepals (protective organs)
2. Petals (attractive organs)
3. Stamens (male reproductive organs)
4. Carpels (female reproductive organs)
5. Modifications:
- Complete flower
- Incomplete flower
➡️ Seed Anatomy
1. Testa (seed coat)
2. Embryo (immature plant)
3. Endosperm (food storage)
4. Modifications:
- Dicot seed
- Monocot seed
➡️ Important Concepts
1. Tissue organization (dermal, vascular, ground).
2. Cell types (tracheids, vessels, sieve tubes).
3. Primary and secondary growth.
4. Modifications of roots, stems, and leaves.
5. Structure and function of stomata.
04/09/2024
JKBOPEE cutoff list for MBBS Course Round 1 2024
PRINCIPLE OF HOMOGENEITY
➨ The magnitude of a physical quantity may be added or subtracted from each other only if they have the same dimension, also the dimension on both sides of an equation must be same.This is called as principle of homogeneity.
Dimensional Variables
➨ Dimensional variables are those physical quantities which have dimensions and do not have fixed value.
❖ E.g., velocity, acceleration, force, work, power... etc.
Dimensionless Variables
➨Dimensionless variables are those physical quantities which do not have dimensions and do not have fixed value.,
❖ E.g., Specific gravity, refractive index, Coefficient of friction, Poisson’s Ratio etc.,
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