Class Discussion Animal Tissues I Major vertebrate systems 1 digestive system breaks down food absorbs nutrients eliminates food waste 2 respiratory system delivers oxygen to and removes carbon dioxide from all tissues 3 circulatory system exchange of gas waste nutrients stabilizes pH and temperature 4 reproductive system gamete production 5 urinary system waste disposal and water balance 6 nervous system coordinate body activities 7 muscular system skeletal muscles only 8 lymphatic system collects and returns fluid lost from blood 9 endocrine hormones 10 skeletal system support and protection cartilage and bone 11 integumentary system skin protects body from dehydration injury some pathogens controls temp excretion of certain wastes receives some stimuli II Tissues are communities of cells and intercellular substances that are interacting to carry out one or more tasks A Epithealial Tissue sheets that cover body or line the inside of organs cavities i Simple squamous thin and leaky tissue They can exchange materials easily lungs capillaries ii Simple cuboidal single layer of cube shaped cells that function in secretion and absorption intestine iii Simple columnar contain a large amount of cytoplasm Function in secreting and absorbing material small intestine iv Stratified squamous multiple layers of flat scale like cells that provide protection against abrasion esophagus B Connective Tissue binds and supports other tissue Consists of cells scattered throughout extracellular matrix i Loose connective tissue loose fibers and cells in extensive ground structure ii Fibrous densely packed with collagen fibers attaches muscles to bone and forms tendons iii Adipose fat containing cells in sparse ground substance but surrounded by many fibers iv Cartilage cells are imprisoned in a matrix with no blood vessel supply Offers support and resists compression v Bone cells suspended in a mineralized matrix Offers sturdy support and movement vi Blood transports substances throughout the body extracellular matix plasma largely water but some salts and nutrients red blood cells oxygen white bloode cells defense C Muscle Tissue Complete the chart below Skeletal Cardiac Smooth Structure Unbranched stiated Function Voluntary Where Attached to bones branched Spindle shaped movements of body involuntary Involuntary heart Walls of digestive functions tracts D Nervous Tissue senses stimuli and rapidly transmits information Where is nervous tissue found in your body Brain and spine III Homeostasis steady state A homeostasis refers to processes used to actively maintain stable conditions necessary for survival within the internal environment of an organism i For example ph temperature balance water and sugar B Negative feedback A variable changes processes triggered to reverse changes in order to promote stability i List a few examples of negative feedback loops that you are familiar with
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