Histology Slides With Identification Points for 1st & 2nd Year MBBS

April 21, 2017

Histology is a minor subject of Anatomy during 1st and 2nd Year MBBS. It’s often feared by students because of being graphical and intricate arrangement of subtle biological structures — making it hard to memorize. In order to score well in spotting of histology slides, one must practice reviewing the slides over and over again and memorize the identification points as well.

**PRO TIP: Use histology flash cards or download below-mentioned histology slides in PDF on your phone and practice reviewing before the test. This is one tested and proven method for mastering histology spotting. Hope this works for you as well! 🙂

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1st Year MBBS Histology Slides With Identification Points
2nd Year MBBS Histology Slides With Identification Points

**When you do not know sh*t about the slide but pretend nodding… 😀**

In this blog post, we’re going to share histology slides with identification points for both 1st and 2nd year MBBS classes. The histology slides can be found below in a downloadable PDF file which you can use on your phone or tablet for quick reviewing and test preparation.

Happy learning! 🙂

Table of Contents

1st Year MBBS Histology Slides With Identification Points

Below are the 28 histology slides / identification points of 1st Year MBBS:

** Click here to view the 1st Year MBBS Histology Slides on Google Drive **

1. SIMPLE SQUAMOUS EPITHELIUM

Appearance: Flattened cells
Surface view: rounded central nucleus

2. SIMPLE CUBOIDAL EPITHELIUM

Cuboidal cells
Central rounded nuclei

3. STRATIFIED CUBOIDAL EPITHELIUM

Multilayered Basal cells: high cuboidal or low columnar cells
Surface layer: cuboidal

4. SIMPLE COLUMNAR EPITHELIUM WITH GOBLET CELLS

Elongated column shaped cells (height is greater than width)
Elongated basal nuclei

5. STRATIFIED SQUAMOUS NON KERATINIZED EPITHELIUM

Surface squamous flattened cells
No keratin

6. SIMPLE COLUMNAR EPITHELIUM

Single layer of elongated cells
Height of cell is greater than width of cell with elongated basal nuclei

7. PSEUDO STRATIFIED COLUMNAR EPITHELIUM

Single layer of cells
Nuclei lying at different levels; give the false appearance of “stratified”epithelium

8. FIBRO CARTILAGE

No perichondrium
Chondrocytes within lacunae, arranged in rows

9. ELASTIC CARTILAGE

Perichondrium is present
Elastic fibres in matrix
Chondrocytes in lacunae in the form of isogenous groups

10. HYALINE CARTILAGE

Dense Irregular CT (perichondrium)
Chondrocytes (in the form of isogenous groups) within lacunae
Visibility to naked eye: Bluish white translucent appearance

11. THIN SKIN

Stratified squamous keratinized epithelium
Hair follicles and roots present
Sebaceous and sweat glands present

12. THICK SKIN

Stratified squamous keratinized epithelium
No hair roots and follicles
Pacinian corpuscles

14. DENSE REGULAR CONNECTIVE TISSUE

Parallel collagen fibers in the form of bundles
Compressed elongated fibroblasts between the collagen fibers

15. MUCOUS ACINI

Pyramidal cells
Flattened nuclei towards the base

16. SPINAL CORD

Central canal
Butterfly shaped grey matter
Dorsal median sulcus and ventral median fissure (depending on the portion under examination)

17. ARTICULAR CARTILAGE

Superficial tangential layer
Intermediate transitional layer
Radial zone
Calcified zone

18. COMPACT BONE

Haversion Canal
Lamellae
Osteocytes in lacunae

19. SPONGY BONE

Trabeculae
Red marrow

20. CARDIAC MUSCLE

Striated appearance
Intercalated discs

21. SMOOTH MUSCLE

Non-striated appearance
Single central nucleus
Spindle shaped cells

22. SKELETAL MUSCLES

Characteristic striated appearance
Peripheral nuclei
Nucleus ovoid in shape

23. ADIPOSE TISSUE (WHITE)

Unilocular
Nuclei towards periphery

24. ELASTIC ARTERY

No distinct outer and inner elastic membranes
Tunica adventitia: merges with CT, contains vasa vasorum
Tunica media: elastic fibres are present in a large amount

25. SPLEEN

Red pulp: splenic cord and venous sinuses
White pulp: contains lymphatic nodules and germinal centre

26. THYMUS

Medulla is lightly stained
Hassall’s corpuscles in medulla

27. LUNG

Alveoli: Type I alveolar cells (simple squamous epithelium); Type II alveolar cells (cuboidal cells)
Respiratory bronchioles: lined by simple cuboidal epithelium

28. TONSIL

Stratified squamous non keratinized epithelium
Crypt
Trabeculae
Lymphatic nodules

2nd Year MBBS Histology Slides With Identification Points

Below are the 58 histology slides / identification points of 2nd Year MBBS:

** Click here to view the 2nd Year MBBS Histology Slides on Google Drive **

1. DUCTUS DEFERENS

Irregular Convoluted single lumen
Low columnar pseudostratified epithelium with stereocilia
Very thick (3 layered) muscularis

2. KIDNEY CORTEX

Simple SQ. Epithelium
Bowman’s capsule
Glomerulus
Proximal and distal convoluted Tubules

3. THIN SKIN

Epidermis consists of ST. SQ. Keratinized epithelium
Dermis
Skin appendages i.e hair follicle, sweat and sabeceaous glands

4. THICK SKIN

Includes a cartilage i.e hyaline cartilage in appearance
Above mentioned features of thin skin
Mention name i.e Vestibule of the nose

5. SPINAL CORD

Outer white matter
Inner gray matter which is H shaped
Centeral canal lined by empendymal cells

6. CEREBELLAR CORTEX (cerebellum)

Cortex consists of three layers : Outer molecular layer & Inner granular layer
In between these two layers is a single layer of Purkinjee cells
Inner white matter
Outter gray matter

7. CEREBRUM

Comprises of six layers
3 types of cells: a. Pyramidal cells b. Granule cells. c. Triangle cells

8. ARTERY

Lumen is rounded and regular
Tunica Intima
Tunica media => Endothelium :: Simple SQ. Epithelium
Tunica externa

9. VEIN

Irregular lumen
Thin & regular tunica media

10. THYMUS

Thymic lobules
Hassel’s corpuscles
Complete and incomplete septa and lobules
Trabaculae

11. HYALINE CARTILAGE

Perichondrium
Isogenous Chondrocytes in Lacunae
Hylose
Cell nest
Collagen fibers present but not visualized

12. ELASTIC CARRILAGE

Perochondrium
Chondrocytes scattered in matrix
Elastic fibers present and visualized

13. LIP

Dermal Papillae along the foldings
Core of skeletal muscles
Labial Salivary glands

14. PENIS

Corpus Cavernosum
Corpus spongiosum

15. SPONGY BONE

Few Haversion System
Osteocytes with their lacunae
Bony trabaculae
Periosteum
Endosteum

16. SKELETAL MUSCLE

Cross striations present
Multinucleated
Nuclei at the periphery

17. CARDIAC MUSCLES

Striated muscle fibers with intercalated discs
One or two oval central nuclei

18. SMOOTH MUSCLES

Spindle shaped muscle fibers
Flattened centrally arranged nucleus.

19. PALANTINE TONSIL

Partial epithelium & partial capsule
Tonsillar crypts
ST. SQ. Nonkaretinized epthelium
Lymphatic nodules
Aggregation of lymphocytes

20. LYMPH NODES

Outer cortex having lymphatic nodules with Germinal centers
Inner medulla having medullar sinuses

21. SPLEEN

Bilirth cords and venous sinuses
White pulp
Red pulp
Peri-arterial sheeth

22. THYMUS

Thymic Lobules
Hassel’s corpuscles
Complete and incomplete septa and lobules

23. TOUNGE

ST. SQ. Nonkeratinized
Lingual papillae
Taste buds
Mucous and serous acini

24. ESOPHAGUS

All layers: Mucosa, Submucosa, Muscularis Externa and Adventitia
Mucosa lined by ST. SQ. Nonkeratinized

25. STOMACH

Irregular Mucosal Folds: Rogue (only specific for stomach)
Mucosa lined by Simple Columnar Epithelium
Gastric pits
Gastric ducts
Pareital cells and cheif cells

26. DUODENUM

Mucosa has “Leaf” like out folding
Lined by Simple Columnar Epithelium
Brunner’s gland in sub-mucosa

27. JUJENUM

Mucosa has “finger” like out folding
Lined by Simple Columnar Epithelium
Lymphatic nodules

28. ILEUM

Club-shaped villi
Lined by Simple Columnar Epithelium
Payer’s patches

29. LARGE INTESTINE

All layers: Mucosa, Submucosa, Muscularis Externa and Adventitia
Mucosa in form of Crypts
Abundance of Goblet cells
No villi
Tenia colai

30. GALL BLADDER

Simple columnar epithelium
Wall is composed of: Mucosa, muscularis externa and adventitia
Rogue (outward projections) and diverticulum (inward fold)
Sub-mucosa absent

30. SALIVAR GLANDS

Mixed glands both mucous and serous acini. Predominantly mucous
Striated, Intercalated and interlobular duct
Serous demilunes

31. SUB MANDIBULAR GLANDS

Mixed glands both mucous and serous acini. Predominantly serous
Striated, interclalated and interlobular ducts

32. PAROTID GLAND

Pure serous acini are present
Striated, Intercalated and interlobular ducts

33. LIVER

Hepatic sinusoids
Portal canal
Hepatocytes

34. PANCREASE

Pancreatic accini
Pancreatic islets
Pacinian corpuscles

35. THYROID GLAND

Thyroid follicles lined by simple cuboidal epithelium
Follicle with collide
Simple cubodial epithelium
Parafollicular cells

36. ADRENAL GLAND

It is divided into outer cortex and inner medulla
Adrenal cortex is composed of 3 Zones:
A. Outer: Zona Glomerulosa
B. Middle: Zona Fasciculate
C. Inner: Zona Reticularis

37. TRACHEA