Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 5, Problem 2ILQ
Figure 5.4 If you zoom on the cells at the outermost layer of this section of skin, what do you notice about the cells?
Figure 5.4 Epidermis The epidermis is epithelium composed of multiple layers of cells. The basal layer consists of cuboidal cells, whereas the outer layers are squamous, keratinized cells, so the whole epithelium is often described as being keratinized stratified squamous epithelium. LM × 40. (Micrograph provided by the Regents of University of Michigan Medical School © 2012)
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Chapter 5 Solutions
Anatomy & Physiology
Ch. 5 - The skin consists of two layers and a closely...Ch. 5 - Figure 5.4 If you zoom on the cells at the...Ch. 5 - Figure 5.6 If you zoom on the cells of the stratum...Ch. 5 - This ABC video follows the story of a pair of...Ch. 5 - The papillary layer of the dermis is most closely...Ch. 5 - Langerhans cells are commonly found in the...Ch. 5 - The papillary and reticular layers of the dermis...Ch. 5 - Collagen lends ________ to the skin. elasticity...Ch. 5 - Which of the following is not a function of the...Ch. 5 - In response to stimuli from the sympathetic...
Ch. 5 - The hair matrix contains ________. the hair...Ch. 5 - Eccrine sweat glands ________. are present on hair...Ch. 5 - Sebaceous glands ________. are a type of sweat...Ch. 5 - Similar to the hair, nails grow continuously...Ch. 5 - In humans, exposure of the skin to sunlight is...Ch. 5 - One of the functions of the integumentary system...Ch. 5 - An individual using a sharp knife notices a small...Ch. 5 - As you are walking down the beach, you see a dead,...Ch. 5 - If you cut yourself and bacteria enter the wound,...Ch. 5 - In general, skin cancers ________. are easily...Ch. 5 - Bedsores ________. can be treated with topical...Ch. 5 - An individual has spent too much time sun bathing....Ch. 5 - After a skin injury, the body initiates a...Ch. 5 - Squamous cell carcinomas are the second most...Ch. 5 - What determines the color of skin, and what is the...Ch. 5 - Cells of the epidermis derive from stem cells of...Ch. 5 - Explain the differences between eccrine and...Ch. 5 - Describe the structure and composition of nails.Ch. 5 - Why do people sweat excessively when exercising...Ch. 5 - Explain your skins response to a drop in body core...Ch. 5 - Why do teenagers often experience acne?Ch. 5 - Why do scars look different from surrounding skin?
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- Collagen lends ________ to the skin. elasticity structure color UV protectionarrow_forwardWhat are some functions of skin?arrow_forwardOne of the functions of the integumentary system is protection. Which of the following does not directly contribute to that function? stratum lucidum desmosomes folic acid synthesis Merkel cellsarrow_forward
- Papillary Layer: Each of these bumps or areas of the dermis that protrude into the epidermis is called a epiderma ridges What is the function of the dermal papilla? Reticular Layer: "Reticular" means network and can refer to many structures, not just reticular connective tissue. This layer of the dermis is made of mostly dense irregular connective tissue. Why?_ Draw what you see. Label the collagen fibers, fibroblast nuclei, and any hair or glands that you see. HYPODERMIS: Fibroblast: Collagen Dense regular connective tissue Dense irregular connective tissue You will see a tissue that looks like soap bubbles. Each "bubble" is a single cell with one nucleus pushed to the very edge of the bubble. The rest of the cell is filled with fat or adipose, giving the tissue its name: loose connective tissue. You also find this tissue in areas of the body where fat is stored (yellow bone marrow, greater omentum, etc.) What is the function of this tissue in this layer of the skin? Draw what you…arrow_forwardThe dermis is a very flexible connective tissue layer. Which of the following would be most likely found in this layer? reticulocytes and chondrocytes osteoblasts and collagen chondrocytes and blood vessels fibroblasts and collagenarrow_forwardHow does melanin get into the skin? melanocytes are found in the most superficial layer of skin and are full of melanin giving pigmentation keratinocytes absorb surrounding melanocytes as they rise up from the basal layer to the surface melanocytes form in the basal membrane and as they ascend to the surface they change into keratinocytes while maintaining the original amount of melanin they produced melanocytes in the basal layer produce melanin and inject it into surrounding keratinocytes via the dendritesarrow_forward
- What skin layer can I only find in thick skin? What is the most superficial layer of the epidermis? Do cancers originate there? Why or why not? What is the deepest layer of the epidermis? Do cancers originate here? Why or why not? Which tissues of the epidermis are affected when you have a second-degree burn? What are the two kinds of sweat glands? Briefly explain how they are different. 6. Briefly describe how dermal circulation explains why older people are more vulnerable to heat stroke.arrow_forwardTwo strata containing dead cells Vascular region Major skin area from which hair follicles arise Scale-like cells full of keratin that constantly flake off Most inferior epidermal layer involved in cell division Dermal layer responsible for fingerprints Areolar connective tissue Site of elastic and collagen fibers Translucent cells, containing keratin Location of melanocytes and tactile (Merkel) cells Location of free nerve endings and tactile corpuscles Location of sweat and sebaceous glands А. Stratum basale w В. Stratum corneum С. Stratum granulosum D. Stratum lucidum Е. Stratum spinosum F. Reticular dermis Papillary dermis Epidermis G. Н. I. Dermisarrow_forwardTwo strata containing dead cells Vascular region Major skin area from which hair follicles arise Scale-like cells full of keratin that constantly flake off Most inferior epidermal layer involved in cell division Dermal layer responsible for fingerprints Areolar connective tissue Site of elastic and collagen fibers Translucent cells, containing keratin Location of melanocytes and tactile (Merkel) cells Location of free nerve endings and tactile corpuscles Location of sweat and sebaceous glands А. Stratum basale В. Stratum corneum C. Stratum granulosum D. Stratum lucidum Е. Stratum spinosum F. Reticular dermis Papillary dermis H. Epidermis G. I. Dermisarrow_forward
- I'm having a hard time labeling this because different diagrams calls different names, I would greatly appreciate this.arrow_forwardWhich epidermal layer has a high concentration of dendritic (Langerhans') cells and has numerous desmosomes? Stratum corneum Stratum lucidum Stratum granulosum Stratum basale Stratum spinosumarrow_forwardwhich of the following js NOT true of the epidermis? It is the more superficial of the major skin layers. All of these are true of the epidermis. In some areas of the body, It consists of 5 strata, while in others, it consists of 4 strata. Some of the sweat glands and hair follicles lie entirely within the epidermis. It consists of stratified squamous epithelium.arrow_forward
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