REVISION OF HISTOLOGY SLIDES & EMBRYOLOGY

MODELS

FOUNDATION MODULE

BY

DR. ABDUL WAHEED ANSARI

CHAIRPERSON & PROFESSOR OF ANATOMY,

RAKCOMS.RAKMHSU.

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The following types of tissues are

covered in this activity. Simple squamous epithelial tissue (lungs)

2. Simple cuboidal epithelial tissue (kidneys)

3. Simple columnar epithelial tissue (small intestine/gall bladder)

4. Pseudostratified (ciliated) columnar epithelial tissue (trachea lining)

5. Stratified squamous keratinized epithelium( Skin)

6. Stratified cuboidal epithelial tissue (salivary glands, sweat glands)

7. Stratified columnar epithelial tissue (male reproductive tract)

8. Transitional epithelial tissue (bladder)

9. Connective tissues(adipose/fibrocartilage/elastic/hyaline and bone)

10. Muscular tissues(skeletal/smooth and cardiac muscles)

11. Revision of general embryology 5/12/2016 2

Simple squamous epithelium

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Simple cuboidal epithelium

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Simple columnar epithelium

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Pseudostratified ciliated columnar

epithelium

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Stratified squamous non-keratinized

epithelium

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Transitional epithelium

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Stratified cuboidal epithelium

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Stratified columnar epithelium

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Connective tissues

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Dense regular connective

tissue

• Dense irregular connective tissue

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Hyaline cartilage

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Elastic cartilage

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Fibrocartilage – bone

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Skeletal muscle histology

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Cardiac muscle histology

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Smooth muscle

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Embryology

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The Sertoli cells are responsible

for spermiogenesis

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Fertilization occurs in Fallopian tubes

• The Sperm's Long Journey

• A man may ejaculate 40 million to150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to 48-72 hours. Only a few hundred will even come close to the egg, because of the many natural barriers that exist in a woman's body.

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The tubal pregnancy is an ectopic

pregnancy

• The fertilized egg starts

growing fast, dividing into

many cells. It leaves the

fallopian tube and enters

the uterus three to four

days after fertilization. In

rare cases, the fertilized

egg does not leave the

fallopian tube. This is

called a tubal pregnancy

or ectopic pregnancy and

is a danger to the mother.5/12/2016 23

The bilaminar germ disc

• 1. Syncytiotrophoblast

• 2. Trophoblastic lacunae

• 3. Surface epithelium

• 4. Fibrin coagulum

• 5. Epiblast

• 6. Amniotic cavity

• 7. Hypoblast

• 8. Cytotrophoblast

• 9. Exocoelomic cavity

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The gastrulation-Trilaminar germ disc

1. Primitive groove

2. Primitive pit

3. Primitive node

4. Oropharyngeal membrane

5. Cardiogenic plate

6. Sectional edge of

amniotic membrane

7. Mesoderm

8. Endoderm

9. Future cloacal membrane

1+2+3 = primitive streak5/12/2016 25

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Derivatives of neural crest cells

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Placenta at term

• Fetal surface is smooth

• It has umbilical cord

arising from it.

• The umbilical cord has

one vein and two

arteries suspended in

mesenchyme.

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The maternal surface of placenta

• It is rough

• It shows cotyledons.

• Chorionic villi.

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Anencephaly

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The spina bifida is a congenital developmental defect when the

posterior neuropore does not close, the spinal cord is exposed

along with the meninges

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References

• https://quizlet.com/4403377/micro-section-2-flash-cards/

• http://www.cram.com/flashcards/histology-unit-7-2455845

• http://stevegallik.org/sites/histologyolm.stevegallik.org/htmlpages/HOLM_Chapter07_Page05.html

• http://www.gwc.maricopa.edu/class/bio201/Histology/HistoRev22a.htm

• http://showcase.netins.net/web/placenta/triage.php

• http://www.siumed.edu/~dking2/intro/IN022b.htm

• http://www.apn-histopathology.unimelb.edu.au/gallery.html

• http://www.easynotecards.com/notecard_set/16072

• http://www.hccfl.edu/yc/science/bsc-2085l-review/04-overview-of-the-skeleton/14-15_hyaline_cartilage_ct.aspx#

• http://www.histology-world.com/photoalbum/displayimage.php?album=22&pid=1161#top_display_media

• https://quizlet.com/4292354/15-fetal-circulation-flash-cards/

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