1. CELLS AND TISSUES KOSTIS GYFTOPOULOS MD, PhD ASS. PROFESSOR OF ANATOMY

2. TISSUE TYPES EPITHELIALEPITHELIAL CONNECTIVECONNECTIVE BLOOD MUSCLEMUSCLE NERVOUSNERVOUS

3. EPITHELIAL TISSUE Cells that are very tightly connected to each other, with very little free intracellular space. Covers the entire body, externally and internally. Skin + accessories Mucous membranes Glands (endocrine-exocrine)

4. DIFFERENT TYPES OF EPITHELIA Squamous Cuboidal Columnar Columnar ciliated Columnar with goblet cells Transitional Stratified

6. CONNECTIVE TISSUE Cells are immersed into an abundant “amorphous” intracellular substance, mainly water and proteins. Supports and connects other tissues. Cartilage Bone Adipose Blood and lymphatic tissue

7. Loose connective tissueCartilage

13. MUSCLE TISSUE Cells are “ELASTIC”, that is they can shorten or stretch, causing movement. Movement is accomplished through shortening in response to a stimulus Skeletal Smooth Cardiac

14. STRIATED MUSCLE

17. SMOOTH MUSCLE

18. CARDIAC MUSCLE

19. NERVOUS TISSUE Cells are “excitable” and specialized in transmitting stimuli or nerve impulses through special chemical-physical activity of their membrane. Great variation in shape, characteristics, length and function of nervous cells, according to their role NEURONS Supporting cells Neuroglial cells (CNS) Schwann cells (PNS)

20. THE NEURON

23. The skin…is an organ! (The integumentary system) Social function Protection from disease and injury Maintenance of homeostasis

24. Skin interaction with other systems Muscular (face expressions) Circulatory (vasodlation..) Nervous system (sensory receptors) Endocrine system (hormones..) Immune system