NURSING EXAM QUESTIONS
BIOCHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Keratin
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Collagen
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Elastin
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None of the above
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Detailed explanation-1: -These proteins include keratin, collagen and elastin, which help form the connective framework of certain structures in your body ( 13 ).
Detailed explanation-2: -Elastin is a protein that your body produces naturally. It provides strength and elasticity to your skin and many other organs.
Detailed explanation-3: -Elastin imparts elasticity to tissues and its presence allows the lung to function as an elastic bag. In aspiration pumping, the potential energy created by contraction of the diaphragm during inhalation is stored in the elastic tissues of the lung, and is released when the lung recoils during exhalation.
Detailed explanation-4: -Elastin is an extracellular matrix (ECM) protein responsible for the extensibility and elastic recoil of many vertebrate tissues, such as large arteries, heart valves, pulmonary tissues, skin, and certain ligaments and cartilages (Reichheld et al., 2019).