Bio47S11HO02

Bio47S11HO02 - Biology 47 Human Anatomy Lecture 2 Histology...

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Biology 47 - Human Anatomy Lecture 2 Histology HISTOLOGY : histio = ; logos = Tissue : Collaborative group of specialized cells : 4 Primary Adult Tissues : 1. Epithelial Tissue: Protective : 2. Connective Tissue: Specialized fluid connective tissues: 3. Muscular Tissue: 4. Nervous Tissue: Primitive (Germ) Embryonic Tissue Three Embryonic Tissues : Appears during gastrulation (~day 12-14) 1. Ectoderm : Becomes: 2. Mesoderm : Becomes: 3. Endoderm : Becomes:
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Epithelial Tissue : Functions : 1. Cover : Skin 2. Line : Oral Cavity ; Parietal Peritoneum 3. Produce : Sweat, mucus, digestive Characteristics : 1. Cellularity : • Composed almost entirely of : Little : 2. Polarity : Tissue has a definite : Apical Surface : Exposed to : Free Surface Basal Surface : Attached to : Bound Surface 3. Attachment : Cells secured to underlying tissue: 2 part membrane a. Basal Lamina : Composition: Produced by : Functions: b. Reticular Lamina : “rete” = net Composition: Produced by :
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Functions: Attachment strengthened by CAMs: 4. Avascular : a = “without” • Blood vessels DO NOT : Nutrients supplied from : • Dependant upon : 5. Arranged into sheets : “ Covering ” or “
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Bio47S11HO02 - Biology 47 Human Anatomy Lecture 2 Histology...

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