Revision images from epithilia to cartilage

Epithelium

One or more layers of cells… One of the surfaces is facing a cavity or the external environment… The base “rests” on a connective tissue

58

Peritoneum

59

Mesenteric epithelium

68

Simple epithelium

69

Simple squamous

73

Alveoli polmone

77

Alveoli

78

Alveoli alveoli

79

Mesothelium

81

Simple cuboidal epithelium

Epitelio cubico semplice

Sezione istologica di rene umano. L’epitelio cubico semplice riveste i dotti collettori. Colorazione: Azan.

86

Simple cuboidal

Surface of crystalline lens

88

Crystalline lens Simple cuboidal epithelium

89

Simple columnar

Oviduct

The height of the cell appreciably exceed the width

This epithelium is ciliated; cilia action favour the movement of mucus through the lumen helping oocyte and spermatids travel. Some cells secrete mucus

93

Epitelio cilindrico semplice

94

Simple columnar epithelium Gall bladder

95

Simple columnar epithelium secreting duct

Preparati personali

97

G. Papaccio

Simple columnar epithelium with brush border and goblet cells. Small intestine (human)

99

Simple columnar epithelium with mucous cells. Stomach

100

Simple columnar epithelium with brush border

103

Simple columnar ciliated

Uterine tube (mouse)

105

Stratified squamous epithelium

Esofagus

115

116

117

Stratified squamous epithelium not keratinized (Vagina)

120

Stratified squamous epithelium not keratinized (Vagina)

121

125

Epidermis

Stratum basale

Stratum spinosum

Stratum granulosum

Stratum corneum

129

Stratified squamous keratinized epithelium

131

Preparati personali

133

G. Papaccio

Stratum spinosum

135

Stratum granulosum

136

Stratum lucidum/ corneum

137

Squamous stratified epithelium keratinized. Stratum corneum

138

Keratin on epidermis surface

140

Cell of stratum basale

• Less cytoplasm
• Extensive cell junctions
• Contain melanin from neighboring melanocytes

142

Cells of stratum spinosum

144

Cells of stratum granulosum

145

Keratinocyte of stratum corneum

147

Stratified columnar epithelium

Glands

161

Trachea: pseudostratified epithelium

All the cells are in contact with basal membrane … but only some of them reach the apical part.

164

Pseudostratified ciliated epithelium

166

Pseudostratified ciliated epithelium with goblet cells

Preparati personali

167

G. Papaccio

Pseudostratified ciliated epithelium with stereocilia (epididymis)

169

Pseudostratified ciliated epithelium with stereocilia (epididymis)

170

Pseudostratified ciliated epithelium with stereocilia (epididymis)

172

Transitional epithelium

Transitional epithelium (contracted)

Human bladder

175

Transitional epithelium (contracted)

Preparati personali

176

G. Papaccio

Transitional epithelium (expanded) Vescica urinaria di uomo

178

Simple tubular glands

27

Simple tubular glands with mucus-secreting cells

28

Simple tubular glands with mucus-secreting cells

Preparati personali

Created by G. Papaccio

30

G. Papaccio

Simple tubular glands (cross-section)

Created by G. Papaccio

32

Simple coiled (or glomerular) tubular gland (Sweat gland)

Created by G. Papaccio

34

Simple coiled (or glomerular) tubular gland–sweat gland

Preparati personali

Created by G. Papaccio

35

G. Papaccio

Simple branched tubular glands

Ex. Stomach