Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous...
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Transcript of Classifications of Epithelia Figure 4.2. Simple Epithelia Simple epithelia Simple squamous...
Classifications of Epithelia
Figure 4.2
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
Simple Squamous Epithelium
Figure 4.3a
Found in lungs (deep region)
Simple Squamous Epithelium
Found in kidney glomerulus
Simple Squamous Epithelium
Found in kidney glomerulus
Found in blood vessels
Simple Cuboidal Epithelium
Figure 4.3b
Found in kidney tubules
Found in hepatocytes (liver)
Found in thyroid follicles
Simple Cuboidal EpitheliumThyroid Follicle
Figure 25.7c
Found in thyroid follicles
Simple Columnar Epithelium
Figure 4.3c
Found in stomach and intestines
Simple Columnar Epithelium
Found in stomach and intestines
Goblet cells (secrete mucous)
Pseudostratified Columnar Epithelium (Ciliated)
Figure 4.3d
Found in trachea and bronchi
Goblet cells
Cilia
Pseudo Stratified Columnar EpitheliumFound in trachea and bronchi
Pseudostratified Columnar Epithelium (Ciliated)
Found in trachea and bronchi
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
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
Stratified Squamous Epithelium (non-keratinized)
Figure 4.3e
Found in oral cavity, esophagus, anus, vagina
Stratified Squamous Epithelium (non-keratinized)
Found in oral cavity, esophagus, anus, vagina
Stratified Squamous Epithelium (non-keratinized)
Found in oral cavity, esophagus, anus, vagina
Stratified Squamous Epithelium (non-keratinized)
Found in oral cavity, esophagus, anus, vagina
Stratified Squamous Epithelium (keratinized)
Found in dry skin
Stratified Squamous Epithelium (keratinized)
Found in dry skin
Stratified Squamous Epithelium (keratinized)
Found in dry skin
Stratified Squamous Epithelium (keratinized)
Found in dry skin
Found in dry skin
stratum corneum, stratum granulosum, stratum lucidum, stratum spinosum, stratum basale, dermal papilla, and interpapillary peg
Epidermal Cells and Layers of the Epidermis
Figure 5.3
Stratified Cuboidal Epithelium
Figure 4.3f
Found in sweat glands
Stratified Cuboidal Epithelium
Found in sweat glands
Stratified Cuboidal Epithelium
Found in Sweat Glands
Stratified Cuboidal Epithelium
Found in sweat glands
Stratified Columnar Epithelium
Figure 4.3g
Found in male urethra
Stratified Columnar Epithelium
Found in male urethra
Transitional Epithelium
Figure 4.3h
Found in urinary bladder and ureter
Transitional Epithelium
Found in urinary bladder and ureter
Transitional Epithelium
Found in urinary bladder and ureter
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
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
Adipose Tissue
Figure 4.12c
Identify adipocyte, nucleus, lipid droplet
Adipose Tissue
Identify adipocyte, nucleus, lipid droplet
Reticular Connective Tissue
Figure 4.12d
Identify reticular fibers
Found in lymph node and spleen
Reticular Connective TissueFound in lymph node and spleen
Identify reticular fibers
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)
Loose (Areolar) Connective Tissue
Found in upper dermis and visceral serous membranes
Identify fibroblasts (dark nuclei)collagen fibers (wide, pale)elastic fibers (dark, thin)
Dense Regular Connective Tissue
Figure 4.12f
Found in tendons and ligaments
Identify collagen bundles, fibroblast nuclei
Dense Regular Connective Tissue
Found in tendons and ligaments
Identify collagen bundles, fibroblast nuclei
Dense Regular Connective Tissue
Found in tendons and ligaments
Identify collagen bundles, fibroblast nuclei
Dense Regular Connective Tissue
Found in tendons and ligaments
Identify collagen bundles, fibroblast nuclei
Dense Irregular Connective Tissue
Figure 4.12e
Found in lower dermis
Dense Irregular Connective Tissue
Found in lower dermis
Dense Irregular Connective TissueFound in lower dermis
Dense Irregular Connective Tissue
Found in lower dermis
Dense Irregular Connective Tissue
Dense
Irregular
Lower dermis
Upper dermisLoose
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
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)
Hyaline Cartilage
Figure 4.12g
Found in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates
Identify chondrocytes, lacunae
Hyaline CartilageFound in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates
Identify chondrocytes, lacunae
Hyaline Cartilage Found in most joints, trachea, nasal septum, costal cartilage, epiphyseal (growth) plates
Identify chondrocytes, lacunae
Elastic Cartilage
Figure 4.12h
Found in the Ear and epiglottis
Identify chondrocytes, lacunae, elastic fibers
Elastic CartilageFound in the Ear and epiglottis
Identify chondrocytes, lacunae, elastic fibers
Figure 4.12i
Fibrocartilage
Identify chondrocytes
Found in vertebral discs, meniscus of knee joint, pubic symphysis
Fibrocartilage
Identify chondrocytes
Found in vertebral discs, meniscus of knee joint, pubic symphysis
Fibrocartilage
Identify chondrocytes
Found in vertebral discs, meniscus of knee joint, pubic symphysis
Spongy Bone
Compact Bone
Compact Bone
Figure 4.12j
Found in diaphysis (shaft) of long bones
Identify osteon, central canal, lamellae, canaliculi, osteocytes
Compact BoneFound in diaphysis (shaft) of long bones
Identify osteon, central canal, lamellae, canaliculi, osteocytes
Compact BoneFound in diaphysis (shaft) of long bones
Identify osteon, central canal, lamellae, canaliculi, osteocytes
Compact Bone
Found in diaphysis (shaft) of long bones
Identify osteon, central canal, lamellae, canaliculi, osteocytes
Spongy BoneFound in epiphysis (ends) of long bones
Identify trabeculae and bone marrow
Spongy BoneFound in epiphysis (ends) of long bones
Identify trabeculae and bone marrow
Spongy Bone
Found in epiphysis (ends) of long bones
Identify trabeculae and bone marrow
Blood Tissue
Figure 4.12k
Identify red blood cell, white blood cell, platelet (thrombocyte)
RBC
WBC
WBC
Platelet