Page 27 - PG 101-Course notes مذكرة النظري 24-25 with spec

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Dic Medicinal plants (PG 101) Level 1 Clinical Pharmacy-PharmD

A- The plasma membrane

▪ Bilayer of phospholipid (polar head & nonpolar tail).

▪ Proteins embedded and adhered to the surface.

▪ The lipid molecule consists of a fatty acid tail (lipophilic) and a head (hydrophilic),

the fatty acid tails face towards the inside and the hydrophilic heads outwards to the
outer protein layers.

Functions of plasma membrane:

1- Control the permeability and diffusion of different substances.

2- Act as a way for transport of substance from one organelle to another.

3- Provide a mechanical frame on which enzymes can be occurred.

4-Act as a source of information of various kinds and synthesis of some

macromolecules.

B- The cytoplasm

➢ The cytoplasm appears as a semi fluid in which the organelles and cell inclusions

are found:
a) Endoplasmic reticulum

b) Ribosomes
c) Golgi complex
d) Mitochondria
e) Plastids

f) Lysosomes
g) Nucleus

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