Anaphy Lecture Module 3 & 4 Reviewer.docx - Human Anatomy...

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Human Anatomy and Physiology LectureModules 3 and Module 4Module 3: Cell TheoryLesson 1 - Cell Theory:1.Living things are composed of one or morecells2.Cell is the basic unit of life3.Cells arise from pre-existing cellsBasic Characteristics of Living Cellbasic units composing all life,may vary in appearance and functionmany shared characteristics of living cells:1.metabolism2.growth and development3.reproduction4.homeostasis5.adaptation6.evolutionLesson 2 – Eukaryotic and ProkaryoticDefinition of eukaryotes and prokaryotesProkaryotes (pro- before; karyon – nut orkernel referring to nucleus)Organisms without a cell nucleusMost are unicellularSome are multicellularExample - bacteriaEukaryotes (eu – true, karyon – nut)Organisms with membrane-bound nucleusPossess internal membranes and cytoskeletonExamples – animals, plants, fungi, and protistsProkaryte vs EukaryoteDifferences Prokaryote vs EukaryoteModule 4: Lesson 1 – Epithelial TissuesWhat Is Epithelial Tissue?Epithelial tissueForms the outer covering of the skin and alsolines the body cavity.Forms the lining of respiratory, digestive,reproductive and excretory tracts.Perform various functions such as absorption,protection, sensation and secretion.Structure of Epithelial TissueFormed from a tightly fitted continuous layerof cells.one surface of the epithelial tissue is exposed toeither the external environment or the bodyfluidOther surface is attached to tissue by amembrane, which consists of fibers andpolysaccharides secreted by epithelial cells.

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