BIOL 1202 : BIO1202 Exam 4
Document Summary
Homeostasis and the organization of the animal body. Having a baby: pushing on cervics, hypothalamus can tell posterior pituitary gland to release oxytocin, when muscles receive the hormones, they contract, hypothalamus: Oxytocin is given off by the pituitary gland. Initial change in one direction sets off a series of events that intensifies a change in that same direction. Four tissue types: epithelial, connective, muscle, nervous. Outermost layer of skin eventually dies: at maturity, cells are dead (skin, dead cells slough off the human body, replaced by the cell division that is taking place. Cells tissues organs organ systems. Cells form continuous sheets called membranes, cover body and line all body cavities. Surrounded by large quantities of extracellular substances (between the living cells) which are secreted from the cells of connective tissue: cartilage, skin (dermis, found underneath skin, fat cells (adipose, blood cells, lymph stream, tendons and ligaments, bone.
