Body Composition of Tissues PDF
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Summary
This document explores the composition of tissues, including cells, intercellular substances, and body fluids. It also details how adult tissues develop from three embryonic layers and provides a basic introduction to various types of tissues such as epithelial, connective, muscle, and nervous tissues. The document also covers bone, dense connective tissue, and the lining of bodily cavities.
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Body Composition of tissues I type form the majority of the cells and gives the tissue type its name e.g muscle cells consist of myocytes 1 Cells 2 Intercellular Substances the cell and between them 3 Body These are produced by in the space are Interstitial fluid flows through specialised channels r...
Body Composition of tissues I type form the majority of the cells and gives the tissue type its name e.g muscle cells consist of myocytes 1 Cells 2 Intercellular Substances the cell and between them 3 Body These are produced by in the space are Interstitial fluid flows through specialised channels running through fluids the tissue ALL ADULT TISSUE DEVELOP FROM 3 LAYERS IN THE EMBRYO In Adults only 4 Primary tissues present are Major Derivatives Tissues 1 2 of of Germ Layers the Body Epithelial Connective cell adjacent with little matrix Abundant extracellular matrix strong 3 Muscle 4 Nervous High contractile cells create movement Conduct electrical signals all membranes along BONE Connective tissue containing various cell types an classed as organ Made up of family of cells Fibroblasts secrete extracellular matrix protiens store fat Adipocytes Smooth muscle cells give vascular tone Osteoclasts Osteoplasts Chondroblasts chordocyte make remodel bone make cartilage Formation Chondrocytes Chondroblasts Secrete type 2 Collagen forms cartilidge template Cartlidge remains at proteoglycans smooth surfaces of articulated joints Chondroblasts eventually secome surrounded by Osteoblasts Secrete ECM and differentiate into chondrocytes Calcium Phosphate type I Collagen mineralize the bone Secrete acid Osteoclasts to seal themselves protease to break bonedown to the bone surface forming digestive zone for bone remodelling a constant process Mature cells lying within the bone itself trapped Osteocytes by Osteoblasts sense stress Required DENSE CONNECTIVE TISSUE Densely packed collagen bundles w fewfibroblasts othercells inbetween Fibres arranged in 2 formations fibres in 2 main direction Fibrous tendons connective tissue e link muscle to bones g ligaments link bone to bone Dense Regular fibres in random mesh seenin the dermis of the skin and capsules of joints as wel the capsules of testis lympho nodes Layers of most Dense Irregular fascias Tendons serous membranes and aponeuroses Aponeurosis Ligaments Bone to Bone Bone to Muscle Bone to musle or other muscles Optimise muste position Length Wide flat sheet rather than tendon Stabilises joints EPITHELIUM Liningsheets of cells with little matrix Basal Surface Anchored Protects the body Separates Organs Covers surface of body cavities organs May be secretory or absorbent tubes within it SKIN INTEGUMENT EXAMPLE ORGAN three tissue Layers hair fur nails A Renal B D Vesical G Gonadal Body cavities Spaces organs Epidermis Dermis claws horns sweatglands Pulmonary C E Gastric H F Cholecyshi into separate areas body abdominal thoracic pelvic is divide are visceral soft v little space filled fluid w All cavities lined with Hypodermis serous membrane mesothelium produces Lubrication serous thid Cardiac Hepatic p Content within Each 1 Thoracic acini heart lungs and associated structures within the bony thoracic cage ribs thoracic spine sternum 2 Abdominal abdominal viscera GI tract glands urogenital system associated nerves vesseles 3 Pelvic urinary bladder organs rectum reproductive
