1. Amber Mitton

2. 1. Definition Of The Field Of Study 2. The Concept Of Cells 3. Levels Of Organization 4. Tissue Types 5. Body systems 6. Normal and abnormal anatomy

3.  The study of the body tissues and how they are arranged to constitute organs, tissues are made up of cells and extra cellular matrix.  The name "Histology" is derived from the Greek word for tissue "Histos", and "-logos" = “the study of”

4.  To understand the histology and ultrastructure of cells, tissues and organs (prac)  Link the morphological observations with an understanding of the biochemistry, physiology and immunology of these structures (theory)

5.  Structure & function of each tissue type, how these tissues are combined to form the organs & systems of the body,  how these combinations function together

6.  smallest basic structure of an organism capable of independent existence  Tissues are groups of cells of similar structure, function and origin that form functional units  Tissues are made of cells & extracellular matrix, 2 components that are intimately related functionally

7.  The organs represent an even greater measure of complexity and are composed of various tissues  Most organs are formed by an orderly combination of several tissues  At an even higher level of organization there are the organ systems composed of several organs. Thus the body can be seen to be formed of different levels of organization, with increasing levels of complexity & each of which plays important roles in the physiological homeostasis of the body

8. Cells Tissues Organs Organ systems Organism

9. The body is composed of four basic tissues : ◦ Epithelial tissue ◦ Connective Tissue ◦ Muscular Tissue ◦ Nervous Tissue

10.  Tissue organized as attached sheets of cells which line or cover all organs & body cavities & form tubular structures within many organs

11.  Tissues which provide structural & metabolic support  Connective tissue contains few cells separated by extracellular matrix molecules secreted by those cells

12.  Electrically excitable tissue which contracts in response to specific stimuli (such as signals from nerve tissue), & moves tissues to which it is attached

13.  Electrically excitable tissue which receives stimuli, processes them, & transmits signals to target tissues to integrate the functions of the whole body

14.  Heamopoietic system  Skin  Digestive system  Glands Associated with the digestive tract  Respiratory system  Urinary system  Reproductive system

15.  A disease is an abnormal condition affecting the body of an organism  Variations of structure and function  There are four main types of disease: ◦ Pathogenic - Tuberculosis ◦ Deficiency - Scurvy ◦ Hereditary – Cystic fibrosis ◦ Physiological – Cancer, Diabetes