Are the courses on CoursesHub.World free?

Yes, all courses on CoursesHub.World are completely free and open access. We believe in democratizing education and making university-level science courses available to everyone worldwide.

What subjects are covered on CoursesHub.World?

CoursesHub.World offers courses in physics (Quantum Mechanics, General Relativity, QFT, Plasma Physics, Cosmology), biology (Molecular Biology, Cell Physiology, Pharmacology), and earth sciences (Oceanography, Atmospheric Science, Climatology).

What level are the courses?

Our courses are designed at the graduate and advanced undergraduate level. They include rigorous mathematical derivations and are suitable for physics students, researchers, and serious self-learners.

Where do the video lectures come from?

Our 400+ video lectures come from world-renowned sources including MIT OpenCourseWare, Stanford, lectures by Nobel laureates, and other leading universities and educators.

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Comprehensive Course

Cell Physiology

A comprehensive exploration of cellular function, from membrane transport and energy metabolism to signal transduction and specialized cell types. Understand how cells maintain homeostasis, communicate, and perform their specialized functions.

📚8 Parts

📖40+ Chapters

🎯Medical & Graduate Level

Start Learning→

🎯Key Learning Objectives

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Membrane Transport

Master the mechanisms of molecular transport across cell membranes

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Bioelectricity

Understand membrane potentials, action potentials, and electrical signaling

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Signal Transduction

Learn how cells receive and process extracellular signals

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Homeostasis

Explore how cells maintain internal balance and respond to challenges

📚Course Content

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Part 1

Cell Membrane and Transport

Membrane structure, lipid bilayers, transport proteins, and movement of molecules across membranes

Membrane StructurePassive TransportActive TransportVesicular TransportMembrane Potential

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Part 2

Cellular Energetics

ATP production, mitochondrial function, glycolysis, oxidative phosphorylation, and metabolic regulation

GlycolysisCitric Acid CycleElectron Transport ChainATP SynthaseMetabolic Integration

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Part 3

Cell Signaling

Signal transduction pathways, receptors, second messengers, and cellular communication

Receptor TypesG-Protein SignalingTyrosine KinasesSecond MessengersSignal Integration

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Part 4

Muscle Physiology

Muscle contraction mechanisms, excitation-contraction coupling, and muscle fiber types

Skeletal MuscleCardiac MuscleSmooth MuscleExcitation-Contraction CouplingMuscle Metabolism

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Part 5

Neurophysiology

Action potentials, synaptic transmission, neurotransmitters, and neural circuits

Resting PotentialAction PotentialsSynaptic TransmissionNeurotransmittersNeural Integration

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Part 6

Epithelial Transport

Transepithelial transport, ion channels, water transport, and barrier functions

Tight JunctionsTranscellular TransportParacellular TransportWater ChannelsSecretion

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Part 7

Calcium Signaling

Calcium as a second messenger, calcium channels, pumps, and calcium-dependent processes

Calcium ChannelsCalcium ReleaseCalcium PumpsCalcium Binding ProteinsCalcium Oscillations

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Part 8

Cell Volume Regulation

Osmotic balance, volume-sensitive channels, regulatory mechanisms, and cellular homeostasis

OsmosisVolume SensorsRVD and RVIOrganic OsmolytesApoptotic Volume Decrease

📐Foundational Equations

Nernst Equation

E_X = (RT/zF) ln([X]_o/[X]_i)

Equilibrium potential for an ion

Goldman-Hodgkin-Katz

V_m = (RT/F) ln(P_K[K]_o + P_{Na}[Na]_o + P_{Cl}[Cl]_i / ...)

Resting membrane potential

Fick's Law of Diffusion

J = -D(dC/dx)

Diffusive flux

Michaelis-Menten

v = V_{max}[S]/(K_m + [S])

Enzyme kinetics and transport

Cable Equation

λ²(∂²V/∂x²) - τ(∂V/∂t) = V

Passive electrical spread

Hill Equation

Y = [L]^n/(K_d^n + [L]^n)

Cooperative binding

🧬Connection with Molecular Biology

Cell Physiology and Molecular Biology are deeply interconnected. While Molecular Biology focuses on the molecular machinery of the cell—DNA, RNA, proteins, and their regulation—Cell Physiology examines how these molecules work together to produce cellular functions and behaviors.

🧬From Molecular Biology

→Ion Channel Structure: Molecular architecture determines gating and selectivity
→Receptor Proteins: GPCR and RTK structure underlies signal transduction
→Transport Proteins: Transporter mechanisms from molecular studies
→Enzyme Kinetics: Metabolic pathways with molecular basis

🔬To Cell Physiology

→Membrane Potential: Ion channels create bioelectric signals
→Signal Cascades: Receptor activation triggers cellular responses
→Active Transport: Pumps maintain cellular gradients
→Energy Production: Mitochondrial function powers the cell

🧬Explore Molecular Biology→⚡Ion Channels Deep Dive→

📋Prerequisites & Course Map

🗺️Learning Pathway

This course is designed for undergraduate students and above. The following foundational knowledge is strongly recommended before beginning the Cell Physiology course:

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