Plant Tissue

Chapter 2. Animal Tissues Animals atomic number 18 multicellular heterotrophs whose cells deficiency cell walls. At some point during their lives, all faunas ar capable of chance uponment, although non all animals devote muscles they use for this. In the or so usually encountered animals, the mobile stage is the adult, although some animals (such as corals and sponges) prevail stalkless (or nonmobile) adult phases and mobile juvenile stresss. Both animal and plant evolutionary history show the development of multicellularity and the move from pissing to land (as well as a thirdhand modification back to urine, for example dolphins, whales, duckweed, and elodea). Animals developed remote or natural skeletons to provide support, skin to prevent or fall water loss, muscles that allowed them to move in search of food, brains and nervous systems for consolidation of stimuli, and internal digestive systems. Organs in animals ar make up of a number of different create from raw bar types. For example, the stomach has epithelial tissue paper making linings and secreting gastric juices, connector tissues. Plants are simpler pipe organisms than animals, having three organ systems and fewer organs than do vertebrate animals. Organs are composed of tissues, which are in turn composed of cells. Plants have three tissue types: ground, dermal, and vascular.

Animals have four: epithelial, connective, muscle, and bone. EPITHELIAL TISSUE epithelial tissue is made of closely-packed cells arranged in flat canvasss. Epithelia form the come of the skin and line the various cavities and tubes of the bo dy. The epithelia that form the home(a) lin! ing of rail line and lymph vessels are called endothelia. The apical surface of epithelial cells is undetermined to the external environment, the lumen of the organ or the air. The basolateral surface is exposed to the internal environment (ECF). The entire sheet of epithelial cells is link up to a layer of extracellular matrix that is called the basement membrane or, better (because it is...If you want to get a full essay, effect it on our website: BestEssayCheap.com

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