HumanitiesLinguisticsLanguagesEnglish LanguageChapter 5 Homework example #19832
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Chapter 5 Homework

Nikko Evans avatar Nikko Evans
5 September 2022
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question
The source of the fluid that accumulates in a blister is________.
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the plasma of the blood flowing through the numerous dermal blood vessels Correct The epidermis is avascular but highly innervated; the underlying dermis lacks the number of nerve endings but is rich in blood vessels.
question
A Caucasian patient with pale skin is treated for low blood pressure with medication that elevates the blood pressure; however, the skin's pallor does not change. Which of the following is the most likely cause of the pallor in this patient?
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Anemia Correct Red blood cells (RBCs) help give blood its color. Anemia is a set of signs and symptoms that appear when a person does not have enough healthy RBCs. Pallor, or paleness, is a sign/symptom of anemia because the blood vessels in the dermal layer lack normal RBCs.
question
Which of the following statements is INCORRECT? Tactile cells anchor the skin to the body. Langerhans cells activate the immune system. Melanin provides protection against ultraviolet (UV) radiation. Keratinocytes produce a fibrous protein to protect the epidermis.
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Tactile cells anchor the skin to the body. Correct This is the incorrect statement. Tactile cells, in conjunction with their sensory nerve endings, function as touch receptors. The hypodermis, not tactile cells anchors skin to the body.
question
In a woman that has hirsutism, ________.
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androgens stimulate vellus hair to become terminal hair Correct Androgens are group of chemically-related male sex hormones that induce male-specific body changes. Normally they are produced in females at very low levels. But when their levels rise, they can cause changes like hair growth on the body and face.
question
If a large number of whiteheads appear on the skin of the forehead, which of the following would result? fine hairs on the forehead would become brittle the forehead's skin would become dry bacteria on the forehead's skin would grow and multiply freely all of the above
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all of the above Correct When sebaceous glands are blocked, sebum cannot be excreted onto the skin. Sebum functions to soften/lubricate the hair and skin, and it acts as a bactericidal agent.
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Which of the following represents a difference between eccrine sweat glands and apocrine sweat glands?
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The secretions of apocrine sweat glands contain more fat and protein than do the secretions of eccrine sweat glands. Correct Compared to the watery secretions of eccrine glands, apocrine sweat glands have secretions that are enriched with fats and proteins.
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Which layer(s) of the skin is(are) damaged in a second-degree burn?
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The epidermis and the superficial region of the dermis are damaged. Correct Second-degree burns result in damage to the epidermis and the superficial region of the dermis.
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Which of the following is a metabolic function of skin?
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synthesis of a vitamin D precursor Correct Yes, this is a function of the skin carried out by chemical reactions in the skin. When sunlight bombards the skin, modified cholesterol molecules are converted to a vitamin D precursor (called cholecalciferol), which is transported via the blood to the liver and kidneys where it is converted into a hormone called calcitriol, or active vitamin D.
question
Susan sat out in the sun watching a baseball game. She developed small blisters on her unprotected shoulders and neck. What type of burn is represented by the formation of the blisters?
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second-degree burn Correct Second-degree burns injure the epidermis and the superficial region of the dermis. Symptoms mimic those of first-degree burns, but blisters also appear.