• Cheek cells

Connective Tissue - basic principle

Loose connective tissue Fat storage in adipocytes Nucleus of adipocytes Dispersed fibroblasts Network of fibers

Dense connective tissue Nucleus of fibroblast Collagen fibers WBC Nucleus of fibroblast Collagen fibers

Cartilage Semi-solid matrix Lacuna Chondrocyte

Bone/osseous tissue Lacuna containing osteocyte Canaliculi Central canal Lamella Osteon/Haversian system Canaliculi Central canal Lacuna containing osteocyte Lamella

Blood/vascular tissue Thrombocyte - platelet Leukocyte - White blood cell Erythocyte - Red blood cell