Stratum

the epidermis is stratum basale; which forms the deepest layers of the cells which is also in contact with the dermis. These cells are capable of quick mitotic division and the daughter cells are pushed towards to surface so they can provide replenishment from the cells that have been lost. Another layer is called the stratum spinosum which is referred to as the prickle layer cell. These cells are not tightly packed therefor they are different

The approach to assign sample to strata is proportionate stratification which means the sample size of each stratum is proportionate to the population size of the stratum. The sample size for each stratum is determined by Equation 1: Equation 1. nh = (Nh / N) × n where nh is the sample size for stratum h, Nh is the population size for stratum h, N is total population size, and n is total sample size. h = 1 (city of Montreal), 2 (Laval/ North Shore), 3

important organ. The skin has many layers that can be damaged when burns happen. According to Marieb, E.N., & Hoehn, K. (2014), the layers that are affected in 2nd and 3rd degree burns are; stratum corneum, stratum granulosum, stratum spinosum, stratum basale, stratum corneum, stratum granulosum, stratum spinosum, stratum basale, papillary layer, & reticular layer. In addition, they began telling them more about the skin. The skin has an epidermis and a dermis. In the epidermis, there are cells that have

Unit 4 Lecture Study Guide Use the lecture folder to help you complete this guide. The more detail you can provide the better prepared for the test you will be. 1. What is the integumentary system and its primary characteristics? The integumentary system is the skin and its derivatives; it provides external protection for the body. Its characteristics are: covers the entire body, accounts for about 7% of total body weight, pliable, yet durable, thickness: 1.5 to 4.0 mm, composed of the epidermis

Section D i. Draw a labelled diagram of the skin and describe it’s structure and function, include all key parts. *please see within brief for labelled diagram of the skin. Structure of the skin: The skin is the largest organ in the body. It covers the whole body and is water-resistant. There are two main layers: the epidermis and the dermis. The epidermis is the outside layer that of which we can see. It varies in thickness depending on where it is located on the body, eg.it is thickest on the

of stratified squamous epithelial cells. The epidermis is made of five separate layers: the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and the stratum corneum. Starting at the innermost layer, the stratum basale is where mitosis of keratinocytes takes place. This layer of the epidermis also contains melanocytes which give the skin it’s pigment. As mitosis takes place in the stratum

sources in the environment especially the outermost layer of the epidermis (stratum corneum) and to provide skin secretion and melanin in the epidermis. Melanin is a free radical scavenger and an energy sink, which forms a protective energy cap over the nuclei of keratinocytes in the basale layer therefore, protecting the DNA from getting damaged by ultraviolet rays. The moisture barrier found in the outermost layer of the stratum corneum is slightly acidic pH (4.5-.5.5), therefore known as acid mantle

epidermis consists of four to five layers, including stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum. The deepest layer, stratum basale lies on top of the dermis and contains mitotic cells that help repair the skin when it is damaged (Marieb & Koehn 153). Stratum spinosum is the house for Langerhan’s cells, and can be characterized as the “prickly layer” on top of the stratum basale (Poonawalla & Diven). Stratum granulosum is where keratinization begins, and

responsible for sensations such as light touch and slight pressure (Patton & Thibodeau, 2009). Aside from these features, the epidermis is also made up of five distinct layers called strata. The deepest and innermost layer of the epidermis is the stratum basale.

hypodermis I. apocrine sweat gland J. sebaceous gland 1. D 2. H 3.C 4.J 5.E 6.F 7.I 8.G 9.A 10.B [pic] Using the key choices below, choose ALL responses that apply to the following descriptions. A. stratum corneum B. stratum basale C. stratum granulosum D. stratum lucidum E. papillary layer F. reticular layer G. epidermis H. dermis __D___ 1. Translucent cells containing keratin __A___ 2. Dead cells __E___ 3. Dermis layer responsible for fingerprints __F___ 4. Vascular