Daphne Jones AP2530 Unit 4 Case Study 2: Skin Cancer ITT Technical Institute Navid Momeny The general structure of the skin has three different layers. The epidermis, dermis, and a layer of fat; the epidermis is on the outside of the skin. This kind of skin gradually moves toward the surface. The dermis is the inner layer and it has tissues and structures, such as * Connective tissue * Elastic fibers * Capillaries * Muscle fibers * Sensory cells * Nerve fibers * Pigment cells (produce Melanin) * Sweat glands * Hair follicles * Sebaceous glands Below all of that is the layer of fat. It varies on size everywhere on the body depending on the person.
(5 points) 1. The epithelial tissue covers the surfaces of the body whether external or internal. It works as a protective covering or boundary for these surfaces. It includes the outer layer of skin, as well as the inter surface of “hollow” organs like stomach, colon, and blood vessels. 2.
The Anatomy of the Integumentary System. a. The basic structure of this system is formed by the skin, hair, and nails, and certain exocrine glands (glands that have ducts or tubes that carry their secretions to the surface of the skin or into body cavities for elimination. b. It is the most visible organ systems and one of the most complex.
There are nerve supplies to the epithelia, but they are already supplied with oxygen and nutrients. The epithelia’s growth and repair capacity is greater than that of the other tissues. Connective The connective tissues are largely distributed around the body, and they lie beneath the epithelial tissues, connecting different parts of the internal structure. Different types of cells lie in a different material, which would be known to us as a ‘matrix’. This could be in the form of a liquid, like blood.
Suture joints and Gomphosis joints are synarthroses. c. Syndesmoses: there is a greater distance between the bones and more fibrous connective tissue. The tissue is either arranged as a bundle (ligament) or as a sheet (interosseus membrane). Example tibia/fibula, because it permits slight movement, a syndesmosis is classified functionally as an amphiarthrosis. Functionally, sutures are classified as synarthroses because they are immovable; syndesmoses are classified as amphiarthroses because they are slightly movable.
1. The basic structural unit of compact bone, the ________, resembles the growth rings of a tree trunk. A. Osteoblast B. Osteology C. Osteon D. Concentric Lamella 2. Which part of the hair is responsible for producing the new cells that will make hairs longer (make hair grow)? A. Follicle B. Bulb C. Matrix D. Cuticle E. Medulla 3.
The contractile unit consists of myofibrils which encompass repeating units of sarcomeres running end to end giving a striated appearance to the muscle. Each sarcomere is characterized by two z-lines, one M-line, an A-band and an H-zone. Actin and myosin are the principle proteins in the contractile machinery with myosin dominating the A-band. The latter refracts plane polarized light (anisotropy) giving a dark appearance to
True Which of the following epithelia function in absorption and secretion? D. columnar epithelium and cuboidal epithelium Which of the following tissues is often ciliated? A. columnar epithelium Langerhans cells are important components in the immune system. True The layer of the epidermis only found in the thick skin of areas such as the fingertips, palms and soles is the A. stratum lucidum Increased secretion of androgens at puberty stimulates typical body hair growth patterns in both adolescent males and