CHAPTER ONE

CELL MEMBRANE STRUCTURE

Cell membrane

Phospholipid molecule

Bilayer phospholipid

Bilayer membrane

Fluid mosaic model

CHAPTER TWO

MEMBRANE TRANSPORT

Cell connection

Molecular transport

Cell membrane transport

Simple diffusion

Facilitated diffusion

Ion channels are gated

They can also be inactivated

Facilitated and simple diffusion

Rate of diffusion

Glucose transport

Na, K-ATPase

Active cotransport

Na, glucose-symporter

Active co-transport: Na, glucose-transport

Osmosis

Phagocytosis

Endocytosis: pinocytosis

Receptor mediated endocytosis

Exocytosis

Any questions?

CHAPTER THREE

RESTING MEMBRANE POTENTIAL

Nernst equilibrium potentials

Goldman equation

GHK equation

CHAPTER FOURAction potential

Excitable cell characterization:

- excitability

- conduction

Action potential

Stimulus

Strength

Duration

Threshold potential

Excitation

Strength- duration curve

Action potential

Voltage-gated ion channel

Voltage-gated ion channel

Pore- forming

Ion channels are ion selective

The fast Na channels ( and the slow Ca channels) have a double gating mechanism:

K channel gating

Action potential

CHAPETR FOUR

SYNAPSES

Electrical synapses

Chemical synapses:

- EPSP

- IPSP

- IP

Chemical synapse

Summation of synaptic inputs

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