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Classifications of Epithelia Figure 4.2

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Page 1: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Classifications of Epithelia

Figure 4.2

Page 2: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Epithelia

Simple epithelia• Simple squamous epithelium

• Found in lungs (deep region), kidney glomerulus, and blood vessels

• Simple cuboidal epithelium • Found in kidney tubules, hepatocytes (liver), and

thyroid follicles

• Simple columnar epithelium • Found in stomach and intestines (areas that secrete

substances); Identify goblet cell

• Pseudostratified epithelium • Found in trachea and bronchi (not the deep area of

lungs); Identify goblet cell and cilia

Page 3: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Squamous Epithelium

Figure 4.3a

Found in lungs (deep region)

Page 4: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Squamous Epithelium

Found in kidney glomerulus

Page 5: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Squamous Epithelium

Found in kidney glomerulus

Page 6: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Found in blood vessels

Page 7: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Cuboidal Epithelium

Figure 4.3b

Found in kidney tubules

Page 8: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Found in hepatocytes (liver)

Page 9: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Found in thyroid follicles

Page 10: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Cuboidal EpitheliumThyroid Follicle

Figure 25.7c

Found in thyroid follicles

Page 11: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Columnar Epithelium

Figure 4.3c

Found in stomach and intestines

Page 12: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Simple Columnar Epithelium

Found in stomach and intestines

Page 13: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Goblet cells (secrete mucous)

Page 15: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Pseudostratified Columnar Epithelium (Ciliated)

Figure 4.3d

Found in trachea and bronchi

Goblet cells

Cilia

Page 16: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Pseudo Stratified Columnar EpitheliumFound in trachea and bronchi

Page 17: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Pseudostratified Columnar Epithelium (Ciliated)

Found in trachea and bronchi

Page 18: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Epithelia

Stratified epithelia• Stratified squamous epithelia

• Non-keratinized stratified squamous epithelium

• Found in oral cavity, esophagus, anus, vagina (moist skin areas)

• Keratinized stratified squamous epithelium

• Found in dry skin areas (epidermis)• Identify stratum corneum, stratum granulosum, stratum

lucidum, stratum spinosum, stratum basale, dermal papilla, and interpapillary peg

Page 19: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Epithelia

Stratified epithelia• Stratified cuboidal epithelium

• Found in sweat gland

• Stratified columnar epithelium • Found in male urethra

• Transitional epithelium • Found in urinary bladder and ureter

Page 20: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (non-keratinized)

Figure 4.3e

Found in oral cavity, esophagus, anus, vagina

Page 21: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (non-keratinized)

Found in oral cavity, esophagus, anus, vagina

Page 22: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (non-keratinized)

Found in oral cavity, esophagus, anus, vagina

Page 23: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (non-keratinized)

Found in oral cavity, esophagus, anus, vagina

Page 24: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (keratinized)

Found in dry skin

Page 25: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (keratinized)

Found in dry skin

Page 26: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (keratinized)

Found in dry skin

Page 27: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Squamous Epithelium (keratinized)

Found in dry skin

Page 28: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Found in dry skin

stratum corneum, stratum granulosum, stratum lucidum, stratum spinosum, stratum basale, dermal papilla, and interpapillary peg

Page 29: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Epidermal Cells and Layers of the Epidermis

Figure 5.3

Page 30: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Cuboidal Epithelium

Figure 4.3f

Found in sweat glands

Page 31: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Cuboidal Epithelium

Found in sweat glands

Page 32: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Cuboidal Epithelium

Found in Sweat Glands

Page 33: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Cuboidal Epithelium

Found in sweat glands

Page 34: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Columnar Epithelium

Figure 4.3g

Found in male urethra

Page 35: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Stratified Columnar Epithelium

Found in male urethra

Page 36: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Transitional Epithelium

Figure 4.3h

Found in urinary bladder and ureter

Page 37: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Transitional Epithelium

Found in urinary bladder and ureter

Page 38: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Transitional Epithelium

Found in urinary bladder and ureter

Page 39: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Connective Tissue Proper

Connective Tissue Proper• Adipose tissue (fat)

• Identify adipocyte, nucleus, lipid droplet

• Reticular connective tissue • Found in lymph node and spleen

• Identify reticular fibers

Page 40: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Connective Tissue Proper

Connective Tissue Proper• Loose (areolar) connective tissue

• Found in upper dermis and visceral (organ) serous (watery secretion) membranes

• Identify fibroblasts (dark nuclei), collagen fibers (wide, pale), elastic fibers (dark, thin)

• Dense regular connective tissue • Found in tendons and ligaments

• Identify collagen bundles, fibroblast nuclei

• Dense irregular connective tissue• Found in lower dermis

Page 41: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Adipose Tissue

Figure 4.12c

Identify adipocyte, nucleus, lipid droplet

Page 42: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Adipose Tissue

Identify adipocyte, nucleus, lipid droplet

Page 43: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Reticular Connective Tissue

Figure 4.12d

Identify reticular fibers

Found in lymph node and spleen

Page 44: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Reticular Connective TissueFound in lymph node and spleen

Identify reticular fibers

Page 45: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Loose (Areolar) Connective Tissue

Figure 4.12b

Found in upper dermis and visceral serous membranes

Identify fibroblasts (dark nuclei)collagen fibers (wide, pale)elastic fibers (dark, thin)

Page 46: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Loose (Areolar) Connective Tissue

Found in upper dermis and visceral serous membranes

Identify fibroblasts (dark nuclei)collagen fibers (wide, pale)elastic fibers (dark, thin)

Page 47: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Regular Connective Tissue

Figure 4.12f

Found in tendons and ligaments

Identify collagen bundles, fibroblast nuclei

Page 48: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Regular Connective Tissue

Found in tendons and ligaments

Identify collagen bundles, fibroblast nuclei

Page 49: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Regular Connective Tissue

Found in tendons and ligaments

Identify collagen bundles, fibroblast nuclei

Page 50: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Regular Connective Tissue

Found in tendons and ligaments

Identify collagen bundles, fibroblast nuclei

Page 51: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Irregular Connective Tissue

Figure 4.12e

Found in lower dermis

Page 52: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Irregular Connective Tissue

Found in lower dermis

Page 53: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Irregular Connective TissueFound in lower dermis

Page 54: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Irregular Connective Tissue

Found in lower dermis

Page 55: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Dense Irregular Connective Tissue

Dense

Irregular

Lower dermis

Upper dermisLoose

Page 56: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Special Connective Tissue

Special Connective Tissue • Cartilages

• Hyaline cartilage• Found in most joints, trachea, nasal septum, costal cartilage,

epiphyseal (growth) plates

• Identify chondrocytes, lacunae

• Elastic cartilage • Found in outer ear and epiglottis

• Identify chondrocytes, lacunae, elastic fibers

• Fibrocartilage• Found in vertebral discs, meniscus of knee joint, pubic

symphysis

• Identify chondrocytes

Page 57: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Special Connective Tissue

Special Connective Tissue • Bone tissues

• Compact bone• Found in diaphysis (shaft) of long bones

• Identify osteon, central canal, lamellae, canaliculi, osteocytes

• Cancellous (spongy) bone• Found in epiphysis (ends) of long bones

• Identify trabeculae and bone marrow

• Blood• Identify red blood cell, white blood cell, platelet

(thrombocyte)

Page 58: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Hyaline Cartilage

Figure 4.12g

Found in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates

Identify chondrocytes, lacunae

Page 59: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Hyaline CartilageFound in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates

Identify chondrocytes, lacunae

Page 60: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Hyaline Cartilage Found in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates

Identify chondrocytes, lacunae

Page 61: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Elastic Cartilage

Figure 4.12h

Found in the Ear and epiglottis

Identify chondrocytes, lacunae, elastic fibers

Page 62: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Elastic CartilageFound in the Ear and epiglottis

Identify chondrocytes, lacunae, elastic fibers

Page 63: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Figure 4.12i

Fibrocartilage

Identify chondrocytes

Found in vertebral discs, meniscus of knee joint, pubic symphysis

Page 64: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Fibrocartilage

Identify chondrocytes

Found in vertebral discs, meniscus of knee joint, pubic symphysis

Page 65: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Fibrocartilage

Identify chondrocytes

Found in vertebral discs, meniscus of knee joint, pubic symphysis

Page 66: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Spongy Bone

Page 67: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Compact Bone

Page 68: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Compact Bone

Figure 4.12j

Found in diaphysis (shaft) of long bones

Identify osteon, central canal, lamellae, canaliculi, osteocytes

Page 69: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Compact BoneFound in diaphysis (shaft) of long bones

Identify osteon, central canal, lamellae, canaliculi, osteocytes

Page 70: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Compact BoneFound in diaphysis (shaft) of long bones

Identify osteon, central canal, lamellae, canaliculi, osteocytes

Page 71: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Compact Bone

Found in diaphysis (shaft) of long bones

Identify osteon, central canal, lamellae, canaliculi, osteocytes

Page 72: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Spongy BoneFound in epiphysis (ends) of long bones

Identify trabeculae and bone marrow

Page 73: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Spongy BoneFound in epiphysis (ends) of long bones

Identify trabeculae and bone marrow

Page 74: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Spongy Bone

Found in epiphysis (ends) of long bones

Identify trabeculae and bone marrow

Page 75: Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous epithelium Found in lungs (deep region), kidney glomerulus,

Blood Tissue

Figure 4.12k

Identify red blood cell, white blood cell, platelet (thrombocyte)

RBC

WBC

WBC

Platelet