Which of the following blood elements is involved in protecting the body from pathogens?
Electrolytes
Leukocytes
Thrombocytes
Erythrocytes
The Correct Answer is B
a: Electrolytes - Electrolytes are ions such as sodium, potassium, and chloride that play essential roles in various physiological processes but are not directly involved in protecting the body from pathogens.
b. Leukocytes: Leukocytes, also known as white blood cells, are involved in the immune response and protect the body from pathogens such as bacteria, viruses, and fungi.
c: Thrombocytes - Thrombocytes, or platelets, are involved in blood clotting but not in protecting the body from pathogens.
d: Erythrocytes - Erythrocytes, or red blood cells, are primarily involved in transporting oxygen and carbon dioxide and do not play a direct role in immune defense.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a. Stratum granulosum: This layer is composed of keratinocytes that are in the process of dying and forming a barrier of keratin.
b. Stratum basale: This is the deepest layer of the epidermis, where keratinocytes are actively dividing. This layer contains stem cells that produce new keratinocytes to replace those shed from the surface.
c. Stratum lucidum: This layer is only present in thick skin, such as on the palms and soles, and consists of dead keratinocytes that have a translucent appearance.
d. Stratum spinosum: This layer contains keratinocytes that are beginning to produce keratin and other proteins but are not rapidly dividing.
Correct Answer is A
Explanation
a. Lipase: Lipase is the enzyme responsible for breaking down fats into fatty acids and glycerol during digestion.
b. Maltase: Maltase is an enzyme that breaks down maltose into glucose molecules. It is involved in carbohydrate digestion.
c. Protease: Proteases are enzymes that break down proteins into amino acids. They are not involved in fat digestion.
d. Lactase: Lactase is an enzyme that breaks down lactose, the sugar found in milk, into glucose and galactose. It is involved in carbohydrate digestion.
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