**Effects of Decreased Collagen Fibers in the Dermis**As individuals age, the number of collagen fibers in the dermis of the skin decreases. What are the results of decreased collagen fibers in the dermis?*Select all that apply.*- **A**: The skin loses firmness and becomes wrinkled.- **B**: The skin develops necrosis and slowly begins to die.- **C**: The inflammation levels in the skin increase drastically.- **D**: The wound healing process in the skin is slower.

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Answered: As individuals age, the number of…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Draw brackets and circles to indicate the layers and structures of the epidermis and dermis in this example of thick skin. Indicate and label the following structures: • Dermal papilla Epidermal ridge Stratum basale Stratum corneum Stratum granulosum Stratum lucidum Stratum spinosum
Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The primary skin pigment is melanin, which is derived from the amino acid tyrosine. b. Melanin is produced by melanocytes and covers the nuclei of neighboring dendritic cells. c. Carotene is a brown-black pigment that accumulates in the stratum corneum. d. Increased amounts of blood flowing through the dermis lead to pallor in the skin. e. Hemoglobin is a pigment found in red blood cells, and its color depends on the oxygen level of the blood.
Dandruff is caused by excessive shedding of cells from the outer layer of skin in the scalp. Thus, dandruff is composed of cells from which epidermal layer?
Which of the following is not a function of the skin? a. Synthesis of vitamin C b. Retention of water c. Sensation of pain, temperature, and pressure d. Thermoregulation
Briefly describe how melanin provides protection for our skin and describe what physiological and anatomical changes occur to your skin when you have excessive sun exposure.
ne definitións below with the correct term: rickets A. peptide that promotes cell division in basal cells and accelerate production of keratin to stimulate epidermal development or repair В. vitiligo C. albinism skin pigmentation condition with normal distribution of melanocytes, but absence of melanin * production D. melanoma condition where legs are curved due to lack of vitamin D3 epidermal growth fa E. more severe form of skin cancer and can metastasize quickly carotene F. skin pigmentation condition as a result of sustained reduction in oxygen level G. yanosis
Keratinocytes are the most abundant cell type in the epidermis. found throughout all epidermal strata. sometimes alive and sometimes dead, depending on where they are found, All of the answer choices are conect able to synthesize the protein keratin.
Here is a general view of thick skin. Please use arrows to point to the following: epidermis dermis dermal papilla epidermal ridge hypodermis
why my answer is incorret？what is function of A？
For questions 9–11, match the layer of the dermis with the correctdescription or function:a. papillary layer b. reticular layer9. Layer of dermis responsible for most of the structural strength ofthe skin10. Layer of dermis responsible for fingerprints and footprints
How 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 dendrites
After a skin injury, the body initiates a wound-healing response. The first step of this response is the formation of a blood clot to stop bleeding. Which of the following would be the next response? a. increased production of melanin by melanocytes b. increased production of connective tissue C. an increase in Pacinian corpuscles around the wound d. an increased activity in the stratum lucidum

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