Module 7 Problem Set

Module 7 Problem Set Complete 2023 The integumentary system is comprised of what three parts of the body? Ans- Hair, skin, and nails List the three layers of the skin from superficial to deep. Ans- Epidermis, Dermis, Hypodermis Describe three functions of the integumentary system. Ans- Production of vitamin D; contain sense organs for protection of skin and underlying tissue; protection from pathogens True or false: Thermoreceptors detect fine touch. Ans- False. Mechanoreceptors detect fine touch. Merkel's cells and Meisner's corpuscles are thermoreceptors Ans- False. Merkel's cells and Meisner's corpuscles are mechanoreceptors. True or false: Pacinian corpuscles detect pressure. Ans- True. Pacinian corpuscles detect pressure. Describe what an exocrine gland contains and how its contents reach the surface of the skin. AnsExocrine glands contain secretions which are released through a duct (opening) into an epithelial surface or lining. What is a sebaceous gland? Ans- Sebaceous glands (oil glands) produce sebum (oil) What is the purpose of thermoregulation in the body? Ans- Thermoregulation helps the body to regulate its temperature. Perspiration is one method in assisting thermoregulation. True or false: The epidermis is made up of stratified cuboidal epithelium. Ans- False (stratified squamous epithelium) What are the four layers of the epidermis? Ans- Stratum corneum, stratum granulosum, stratum spinosum and stratum basale True or false: Cells of the stratum basale have a high rate of cell division. Ans- True. Cells of the stratum basale have a high rate of cell division. The cells of the stratum basale have epidermal ridges which are the basis for each person's distinct pattern called ______? Ans- Fingerprints True or false: Dead cells in the stratum corneum remain for about 2 weeks before they slough off. AnsTrue. Dead cells in the stratum corneum remain for about 2 weeks before they slough off. These types of cells produce keratin. Ans- Kertainocytes These types cells produce melanin. Ans- Melanocytes What are the two layers of the dermis? Which layer contains the main blood supply for the skin? AnsPapillary and reticular; the reticular region contains the main blood supply What is the medical term for a bruise? Ans- Contusion What is one of the purposes of the hypodermis? Ans- Fat helps to insulate and regulate body temperature; The thickness of the hypodermis protects the deeper tissues and organs from injury. What is a dermatome? Ans- A dermatome is a region of skin innervated by one sensory nerve. Where is the information gathered from a dermatome sent? Ans- The sensory information gathered in each region of the skin is sent to the spinal cord and then finally the brain for processing. True or false: The root of a hair follicle begins at the shaft. Ans- False. The root of the hair follicle begins at the hair bulb. Each hair follicle is connected to a muscle called__________. Ans- Arrector pili muscle True or false: Hair can be impacted by hormones circulating in the body. Ans- True. For this reason during puberty hair in certain parts of the body change properties. True or false: Nails are comprised of live skin cells. Ans- False. Nails are comprised of dead skin cells that are converted to keratin. Is the nail body the visible or the invisible portion of the nail? Ans- The nail body is the visible or the portion of the nail. What types of cells form a blood clot? Ans- Platelets Mast cells release what type of chemical? Ans- Histamine What is the purpose of the chemical released by mast cells? Ans- Helps to dilate blood vessels to bring increased blood and nutrients to the injured area. True or False: Fibroblasts are involved in engulfing foreign bacteria and particles. Ans- False. Macrophages work to engulf foreign bacteria and particles. Fibroblasts secrete what substance to assist in wound healing? Ans- Collagen in the shape of the old tissue. What is the final phase of wound healing called? Ans- The final phase of wound healing is remodeling where the tissue matures and the cells take on their original functions. What type of burn damages only the epidermis? Ans- First-degree burn Your patient was involved in a severe cooking accident. She is not able to feel any sensation in the burned area. What type of burn did your patient incur? Ans- Fourth-degree burn (damage to deep tissues, dermis is completely destroyed along with sensory receptors in the skin)