ANATOMY 1 Lecture Notes - Lecture 7: Stratified Squamous Epithelium, Vasodilation, East Los Angeles College
Document Summary
Mesenchyme: embryonic; a loosely organized, mainly mesodermal embryonic tissue that develops into connective and skeletal tissues, including blood and lymph. Loose/areolar: most common; a soft packaging tissue of the body. Reticular (tissue)-liver, spleen, bone marrow; network; the fibers form a soft skeleton (stroma) to support the lymphoid organs. Adipose-hypodermis, subcutaneous=superficial fascia; fat; loose connective tissue composed of adipocytes; main role is to store energy in the form of fat, although it also cushions and insulates the body. Elastic-aorta (largest artery/blood vessel of the body), vocal cords, ligamentum flavum (yellow, ligaments of the spine connecting adjacent vertebrae), nuchae (ligament of the neck); stretch and recoil; allow for movement. ***all blood vessels are lined by simple squamous epithelium/endothelium. ~80% of thickness of dermis called reticular layer of dermis (but not reticular. Collagen layers can stretch and straighten and even tear-forming scar. Dense regular-tendons (bone to muscle), ligaments (bone to bone); collagen tissue stretch marks tissue)
