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Tissue ComparisonsCiliated Epithelium vs. Intestinal Epithelium:Ciliated cells tend to be columnar (upright, taller than its width) and have many hair-like organelles called cilia. However such tissue often features non ciliated cells such as goblet cells, which are structurally much different. Instead goblet cells have a curved in lower-middle section, a wide top and a less wide base when they collapse to secrete mucins. When not secreting mucins goblet cells are columnar. The tissue is also relatively soft.One could easily mistake Intestinal epithelium with ciliated epithelium as both have “hair” like structures in exposed parts called cilia, however intestinal epithelium does not have cilia, it instead has microvilli, which are not themselves organelles, but instead are extensions of the outer cell membrane. Cells with microvilli themselves are found on large, upright structures with a capillary filled center called villi, unlike ciliated cells which are simply layered on a track. Intestinal epithelium can be found on the small intestineCiliated epithelium is typically found on respiratory tracts, such as the respiratory ¬†segment of the nasal cavity and is responsible for the even distribution of mucus around said tract for the filtration of harmful particles from the air. In the respiratory nasal cavity segment, ciliated epithelium is present to filter large particles from ventilated air, as well as increasing the surface area of the nasal cavity, in order to warm up breathed in air to near body temperature.Ciliated cells use their cilia to spread and coat the entire epithelium with a viscous lubricating substance called mucus, while goblet cells in the tissue secrete it.Intestinal epithelium cells vary greatly in function, as their main job is to extract nutrients from ingested food. Cells in both tissues have relatively high metabolism as intestinal cells need to produce ATP in order to perform active transport to extract nutrients from food, while ciliated cells need ATP to constantly move their cilia in order to spread around mucus.Cartilage connective tissue vs. Blood connective tissue:Cartilage tissue is composed of few generic shaped cells which secrete a matrix, indeed the majority of the tissue is matrix both in volume and in weight. The cells that secrete the matrix ace called chondrocytes and are bound to small areas called lacunae. Because of this damaged cartilage tissue is very difficult to repair by the body. Cartilage tends to be shock-resistant, smooth, tough and acts very much like rubber. Blood vessels and nerves are never found in this tissue. Very much like cartilage, blood connective tissue cells are suspended in a matrix called plasma, which unlike cartilage is fluid. However unlike cartilage there is an incredible variety of cells found in blood, that being the many variations of white blood cells and red blood cells. Unlike chondrocytes red blood cells have a biconcave shape and don’t contain any organelles, however white blood cells are spherical, which match chondrocytes more. Cartilage is typically found in bone joints that typically undergo a high amount of stress, such the hips and knees. Cartilage helps by reducing friction from the turning of the joints, as well as the absorption of shock. It essentially protects the bones from sustaining damage. Chondrocytes get nutrients in a very odd way, being diffusion. Nutrients will diffuse through the matrix and feed the chondrocytes. Because of this the metabolic rate of chondrocytes is very low, and the relative production of cartilage slow.Blood tissue has a completely different purpose compared to cartilage. While cartilage exists to protect bones, blood transports essential nutrients, oxygen (for aerobic respiration) and an immune response (allows for white blood cells to treat a spot of infection) to the entire body and its cells. Similarly to chondrocites, white blood cells get nutrients from the surrounding plasma, which is rich in glucose, vitamins and amino acids. Also unlike chondrocytes, white blood cells (specifically lymphocytes) have a high metabolic rate in order to rapidly produce antibodies. Blood tissue is fluid, unlike cartilage which is solid.

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