APA Style Sheet 3 The Integumentary System The integumentary system is an alternative name for the skin. The integumentary system is the body’s largest organ and makes up for 15% of the body’s weight. The integumentary system not only includes skin but skin derivatives such as hair, nails and glands. The hair functions as protection and sensing light touch. The hair is made up dead, keratinized cell bonded together by protein.
HSC 3051 UNDERTAKE TISSUE VIABILITY RISK ASSESNENTS Understand the need for tissue viability risk assessment Describe the anatomy and physiology of healthy skin http://bp3.blogger.com/_e-mPA_6ZQyg/R5osT7sMM1I/AAAAAAAAGIo/xq-t_lNiMGk/s400/Skin.jpg Skin is the largest organ in the body and accounts for about 15% of the body’s weight. The chemical composition, of skin is about 70% water, 25% protein and 2% lipids. The remainder includes trace minerals, nucleic acids, glycosaminoglycans, proteoglycans and numerous other chemicals. The skin consists of three main layers: The Epidermis: This is the outer layer of skin, and has a thickness between.05 mm (eyelids) and1.5 mm (palms and soles) It is made up of 5 layers. They are from bottom to top: stratum basale stratum spinosum stratum granulosum stratum licidum stratum corneum Cells in the stratum basale are shaped like columns.
Dermis is mainly connective tissue, is deep to the epidermis, and is vascular * The skin contains collagen (for strength) and elastic (for stretch) fibers. * The skin is thicker on the posterior than the anterior parts of the body; thicker on lateral parts of limbs than medial parts. —Subcutaneous layer (or hypodermis) is deep to dermis, but is not part of skin. It is mainly adipose tissue B. Layers of epidermis (from deepest to superficial) 1. Stratum Basale (= base) a. has stem cells that continuously divide by mitosis
Autumn Hamman GE 258 A & P 1 Unit 2 Case study: The Cellular Level of Organization “Joseph’s story” Question B: Assuming Joseph’s heart has stopped, what cellular processes and membrane functions are going to be affected by the loss of oxygen, blood glucose, and waste removal? As the blood slows and the flow of oxygen and glucose slows, each cells continues to work rapidly burning up its ATP supply. Carbon dioxide builds in the cells and the pH balance begins to drop. Eventually the cells begin to die and the Active transport pumps shut down the plasma membranes of Joseph’s heart. The cells become leaky; sodium slowly began to leak into the cells, and potassium leaked out.
It's also found in the uterus and fallopian tubes. The movement of cilia move the ovum to the uterus. Glandular Epithelium are basically columnar epithelium with goblet cells. Some parts consist of such a large number of goblet cells that there are only a few normal epithelial cells left. They secrete substances
LAB THREE: Body Tissues and the Integumentary System Describe the characteristics of epithelial tissue. (5 points) Epithelial tissue is a sheet of cells which covers a body surface or even lines a body cavity. Covering and lining epithelium forms the outer layer of the skin, dips into and lines the open cavities of the cardiovascular, digestive and respiratory systems, and also covers the walls and organs of the closed ventral body cavity. Glandular epithelium fashions the glands of the body. Special characteristics of the epithelial tissue layer are that these types of tissues are composed almost entirely of close packed cells.
The pancreas is one of the important organs in the body where it produces enzymes that help the body digest the food and the hormones that help absorb sugars. However, when thick mucus is produced in the pancreas, this mucus clogs up the narrow passageways where it can make it very difficult for the person to digest the food and gain al the vitamins and nutrients needed for the body. Cystic fibrosis is a recessive, autosomal disease where it is an inherited disease of the body’s mucus and sweat glands (News Medical, 2013). This disease occurs when a mutation in a gene encoding for cystic fibrosis conductance regulation(CFTR) protein on chromosome 7 (Genetics Home References, 2013). It is passed down from the parents to the children because whoever has cystic fibrosis is born with it.
It is located on the left side of the body just above the kidney. Humans can’t live without the spleen. The thymus: This stores immature lymphocytes and prepares them to become active T cells. The thymus produces vital white blood cells and is located in the chest just above the heart. Tonsils: Tonsils are large clusters of lymphatic cells that are found in the pharynx.
As the chemical gradient diminished and heart tissue distal to the obstruction dies and it replaced by non contractile scar tissue. C. Which intracellular organelles have membranes as part of their structure? How would the breakdown of the membranes of these structures affect the function of Joseph’s heart cells? With ATPase’s transferring calcium from the cytosol to the endoplasmic reticulum in cardiac muscle cells, every intracellular organelle has membranes. The breakdown of the membranes of these structures affects
It is a three to five feet long thick muscular organ and has an inverted U shape. The colon receives waste products from the small intestine through the ileocecal valve. Peristalsis (muscular wavelike motion) moves the waste products forward through the colon. The colon absorbs the nutrients and water from those waste products and eliminates them from the body in the form of faeces through the rectum and the anus. Ulcerative colitis is the inflammation