Mast cell

as its anti-histaminic effect can persist for up to 24 hours. Histamine is produced from the amino acid histidine and is found in high concentrations within the vesicles of mast cells, enterochromaffin cells in the gut and in some neurons. Histamine is metabolized by Monoamine and Diamine oxidase and is released from mast cells during IgE-mediated…

Nwizu Chidinma Precious Juliana Rodriguez Jade Mancini A boil, also called a furuncle, its a deep folliculitis, infection of the hair follicle. It is most commonly caused by infection by the bacterium results to a painful swollen area on the skin caused by an accumulation of pus and dead tissue. Boils are filled with pus. Boils clustered together are called carbuncles. Boils are bumpy, red, pus filled lumps around a hair follicle that are tender, warm, and very pain, they are the sizes of pea or…

functions (Kinworthy, 5). Every system has their own limitations of what they can do. This is due to differentiation the cells within each system become specialized for specific functions (Martini, & Bartholomew, 2). If something were to happen to one of your systems, your body’s other systems could not help because their cells do not have the ability to do what the other systems cells did (Kinworthy, 5). An example of three systems that are needed for your body to be at optimal health would be…

For this sharing, I would like to focus on the telecommunication industry with Orange Senegal, a company which I believe has developed an excellent model to cope with the decline of the voice and reinvent itself. Organizations either small or big, profit or non-for profit have to control their internal environment, but as well to know what is happening in their external environment and how this can impact on their development. By doing so, organizations can anticipate any external threats and…

nucleolus is a darker staining region of the nucleus. It is non-membrane bound structure composed of ribonucleic acids (RNA) and proteins. It makes ribosomes inside the nucleus and contains all the DNA of the cell. It is also used for cellular reproduction and it is often referred to as the brain of the cell as it controls what goes on. Golgi apparatus A group of fluid-filled flattened membrane bound sacs located close to the nucleus. Vesicles are regularly seen at the sacs' edges. It is…

The role of circadian rhythms and clock genes in cutaneous wound healing Introduction The governing of rhythmic changes involved in daily behaviour and/or physiology is controlled by light/dark cycles. The field of Chronobiology encompasses biological timings (hormone secretion, blood pressure, reproductive cycles, body temperature, sleep, locomotor activity). Circadian rhythms have been discovered to play a major role in the mental, physical and behavioural changes, which follow a 24 hour…

efficiently change the internal organization of the cell, and capture organelles through the cytosol. Intermediate filaments are made up of the protein keratin. Their primary function is to strengthen the internal structure of a cell. Microfilaments are the smallest among the three cytoskeletal filaments. They consist of protein actin. Microfilaments are dynamic structures that can rapidly disassemble or assemble themselves, and thus microfilaments enable the cell to move efficiently. Cilia and…

In Aristotle’s view, everything in this world can be categorized. Living beings include plants and animal. The plant has nutritive soul and the animal process both nutritive soul and perceptive soul. If we discuss animal further, we can divide animal into rational animal, which is human, and non-rational animal. The essential feature of “being an animal” is perception. From the Aristotle Introductory Reading: “413b2: What makes something an animal is primarily perception.” Perception is…

Genetic Engineering is the modification of an organism 's genetic composition by artificial means, often involving the transfer of specific traits, or genes, from one organism into a plant or animal of an entirely different species. With this new, rapidly growing, technology we are now able to do things that we once thought were impossible. In Ethics and the New Genetics, the Dalai Lama addresses problems that we need to consider as we continue to explore this microscopic world that we have…

within a cell, they can be expressed in response to external stimuli. This external stimuli can be sub lethal heat shock (SLHS) hence the name heat shock proteins (Baneyx, F. 2008), this stimulus causes more of the proteins to be produced (Pugsley, A. 1989). In addition to being expressed due to SLHS they can also be expressed in response to amino acid analogs, heavy metals…