Histology Flashcards
What is epithelial tissue?
Covers and lining tissue.
What is the function of epithelial tissue?
Selective barrier, secretions and protection
What is an exocrine gland?
Has ducts which lead to the surface and secrete stuff. Examples: salivary, sweat, milk
What is an endocrine gland?
Enter interstitial fluid and blood. Example is hormones
What are the two basic elements of connective tissue?
Extracellular matrix made of ground substance (can be fluid, semi fluid and calcified) and fibres.
Made up of cells
What are the cells in connective tissue?
Fibroblasts - make collagen, elastin and extracellular layer.
Adipocytes - fat cells (triglycerides)
Leukocytes (macrophages, plasma membrane, mast cells)
What are mast cells for?
Produce and release heparin (blood clot buster) and histamine (inflammation)
What is the functions of connective tissue?
Structural framework, transport, protection, support, insulate, store energy, produce blood and lymphatic cell, defence and repair
What are the four types of membranes that cover the body?
Flat sheets of pliable tissue.
Synovial, cutaneous, mucous, serous
What is cutaneous membrane?
Skin
What is mucous membrane?
Line respiratory, digestive and GIT and is an epithelial membrane which has goblet cells to secrete mucus. It protects and traps foreign particles.
What is serous membrane?
Lines body cavities that do not open to exterior. It has a double layer of parietal layer ( lines cavity) and visceral layer (surround organs within cavity).
What are the three sites where serous membranes are found?
Pleura - lines thoracic cavity and surrounds lungs
Pericardium - lines the heart and pericardium cavity
Peritoneum - lines abdominal cavity and abdominal organs
What are synovial membranes?
Not epithelial membranes, and lines freely moveable joints. Secrete synovial fluid to lubricate and nourish joint cavities.
