Chapter 4 and 6_SP_09

Chapter 4 and 6_SP_09 - 1/22/2009 Classification of Tissues...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1/22/2009 1 Classification of Tissues • Tissue = groups of cells with similar structure specialized to perform specific functions • Classified based on their structure & function : 1. Epithelial 2. Connective : supports & framework of all body parts 3. Muscle : movement 4. Nervous : nerve impulses Characteristics of Epithelial Tissue (Epithelium) Specialized to form the covering or lining of all internal endothelium = epithelium of internal body surfaces Avascular Regenerates easily Ability to modify itself if injured (e.g. calluses) Different types of secretions with specific functions, e.g. – mucus in the respiratory tract – digestive juices in the gastrointestinal tract. ..etc. Anatomy of Epithelial Tissue • Cells packed tightly together • Tissue layer has an apical surface & basal surface (basement membrane of connective tissue) – provides structural support for the epithelium and binds it to neighboring structures • Classified according to the # & arrangement of cell layers, and their shape Classification of Epithelial Tissue Simple : one layer Stratified : many layers Pseudostratified : appear layered, but are not By Shape: Squamous: flat irregular Cuboidal Columnar Simple Squamous Epithelium Thinnest tissue of the body Covers organs & lines blood vessels, lymph vessels, body Image Source: 2006 Pearson Education, Inc.; webanatomy.net/histology
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1/22/2009 2 Simple Cuboidal Epithelium Common in Forms walls of kidney tubules Covers the ovaries Simple Columnar Epithelium Lines the digestive tract Cells secrete digestive fluids & absorb nutrients (have microvilli) Includes goblet cells (mucus producing) Image Source: 2006 Pearson Education, Inc.; webanatomy.net/histology Pseudostratified Columnar Epithelium • Major tissue in respiratory & reproductive tracts • May be ciliated or non-ciliated Functions: Secretion & movement of mucus in the lungs (with the aid of cilia) – cilia aid in moving the ovum from the ovaries oviducts uterus Image Source: 2006 Pearson Education, Inc.; webanatomy.net/histology Stratified Squamous Epithelium Designed to protect the underlying layers, where friction is common Lines the mouth, throat, vagina, Image Source: 2006 Pearson Education, Inc. Stratified Cuboidal & Columnar Epithelium Found mainly in the ducts of large glands Stratified cuboidal epithelium lines the lumen of: – mammary glands – the pancreas Stratified columnar epithelium lines parts of the male Stratified Transitional Epithelium Wrinkled designed to allow for distensibility Where do you think one would find it? Glandular Epithelium
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 15

Chapter 4 and 6_SP_09 - 1/22/2009 Classification of Tissues...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online