Level: 1

Semester: I

• Module Name : Normal Human body

❑Profession :

Lecturer of Histology & cell biology

❑E-mail:

dr.osama784@yahoo.com

❑Academic hours:

Saturday (10 A.M : 2 P.M)

Dr. Osama Ibraheim Ramadan

1)Structure of the nucleus.

By the end of lecture, the student should be able

to:

1) Know the nuclear structure.

2) Diferentiate between euchromatic &

Heterochromatic nuclei.

3) Corelate the strucure and function of the

nucleus.

Dear students do you know what is

this ?

CELL STRUCTURE

Cytoplasm Nucleus

Two major structures are

found in the cell

Nucleus

Cytoplasm

Nucleus

Nucleolus

Chromatin

Structure of the Nucleus

Nuclear sap

Nuclear membrane

Structure of the Nuclear Envelope

Pars

fibrosa

Nucleolus-associated chromatin

Structure of the Nucleolus

Pars

granulosa

Euchromatin

Heterochromatin

Marginal chromatin

Types of Chromatin

Nuclear sap chromatin

(ISLANDS)

Nucleolar-associated

chromatin

Karyosomes