List the 4 layers of skin
Epidermis
Dermis
Superficial fascia
Deep fascia
Contents of epidermis
Keratinocytes
Melanocytes
Langerhans cells
Merkle cells light and touch sensations
Contents of dermis
Connective tissue Collagen Elastic fibres Fibroblasts Blood vessels Hair follicles and glands
Superficial fascia
Collagen and elastic fibres Fat and h2o storage Insulation Cushioning Conductive and transport nerves
Contents of deep fascia
Lacks fat more organised
Dense connective tissue
Capsules tendons and ligament
Capsule around organs
3 serous membranes
Pleura
Pericardium
Peritoniem
What is a collateral artery
Makes sure there’s continuous blood supply regardless of body position
Ie around joints u have loads of arteries
What are the 2 branches of the lymphatic system
Right lymphatic duct: drains right upper side head arm etc
Thoracic duct: rest of body