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
| Goigi Apparatus | The main function of the Golgi apparatus is to be responsible for handling the macromolecules that are required for proper cell functioning | It packages and ships molecules made in the ER. | Lysosome | Lysosomes are spherical bag like structures that are bound by a single layer membrane, however, the lysosome shape and size may vary to some extent in different organisms. The lysosome size ranges between 0.1 to 1.2μm. | Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself. | P1 tasks 2 Organs | Anatomy | Physiology
The endoplasmic reticulum (ER) is a system of interconnected membranous sacs, channels, or cisternae in the cytoplasm. It has two subtypes: rough endoplasmic reticulum (RER) and smooth endoplasmic reticulum (SER). The RER is a ribbon-like structure surrounding the nucleus near the base of the cell. Its surface appears rough due to the ribosomes attached to its membrane and it is the first organelle into which membranebound or extracellular proteins are inserted. SER lacks ribosomes and participates in lipid synthesis and detoxification.
Some cells have more energy that others, your fat cells have lots more mitochondria because they store a lot of energy. Muscle cells have many mitochondria which allows them to respond quickly when needed. All living cells contain ribosomes, tiny organelles composed of 60% ribosomal RNA and 40% protein. ‘Ribosomes are mainly found bound to the endoplasmic reticulum and the nuclear envelope as well as freely scattered throughout the cytoplasm’ Davidson, Jan,2005. The ribosomes serve as the protein production for the cell, and are
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.
stores proteins and alot of exporting (sending stuff out of the cell) 3. In which part of the cell would you expect to find nucleotides? building block for DNA, DNA found in the nucleus 4. Name the two organelles involved in energy conversion.chloroplast and mitochondria 5. What are the basic functions of the organelles in chapter 4?
| | | A) | provides a location for DNA production | | | B) | helps decrease surface area | | | C) | allows selective permeability of cell membrane | | | D) | facilitates breakdown of chemical bonds | | | | | | Feedback: The pleats and folds of the endoplasmic reticulum provides a large surface area where cellular functions, such as breaking chemical bonds, can take place. |
1.1 Explain employees` roles and responsibilities in relation to the prevention and control of infection. Employees are responsible for taking action to prevent and control the spread of infection, following legislation, local and organisational policies and procedures. They also have a personal and moral responsibility, as members of a caring society and profession. Employees` are responsible for themselves, colleagues, employers, people we support and visitors while doing different roles such as working in communal living environments, work with hazardous substances, work activities may expose them to infection, work with vulnerable individuals to infection. Employees` have to use personal protective equipment and clothing provided when needed and appropriately eg when supporting individuals with their personal cares.
Sebum is secreted into areas like the hair follicles or the pores on the skin surface. The sebaceous gland secretes sebum in order to soften and lubricate the hair and skin and also prevent the hair from becoming brittle and it also assist with slowing down the water loss from the skin when external humidity is low. It also has a bactericidal action. In order for the skin to secrete sebum it must stimulated by certain hormones especially
Organelles include mitochondria, Iysosomes, the Golgi apparatus and the endoplasmic reticulum. Mitochondria: Every cell in the body has at least 1000 of these rod-shaped, spherical bodies and very energetic active cells like muscle and liver cells will have much more. Mitochondria are concerned with energy release. Each mitochondria has a double layered membrane but the inner layer is folded at intervals, which produces a series of ridges known as cristae. The enzymes responsible for the end stages of glucose oxidation are located on the cristae.