Which of the following stimulates the production of new erythrocytes?
Dehydration
Hypoxia
Inflammation
Infection
The Correct Answer is B
A. Dehydration does not directly stimulate the production of erythrocytes. While dehydration can affect blood volume and viscosity, it is not a primary factor in erythropoiesis (the production of red blood cells).
B. Hypoxia (low oxygen levels) stimulates the production of erythropoietin, a hormone produced by the kidneys that promotes the formation of new erythrocytes in the bone marrow. This response helps improve oxygen delivery to tissues.
C. Inflammation triggers the immune response and can affect various blood cell types, but it does not directly stimulate erythropoiesis.
D. Infection can affect blood cell counts, but it is not a direct stimulus for the production of erythrocytes. The body may produce white blood cells as part of the immune response, but not red blood cells specifically.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Luteinizing hormone (LH) is involved in the regulation of the menstrual cycle and ovulation, but it is not responsible for uterine contractions or milk production.
B. Lactogen (also known as human placental lactogen) is produced during pregnancy and helps prepare the breasts for milk production, but it does not trigger uterine contractions.
C. Oxytocin plays a key role in both uterine contractions during labor and milk ejection during breastfeeding. It is sometimes referred to as the "love hormone" because it is also involved in bonding and emotional connections.
D. Prolactin is responsible for stimulating milk production in the mammary glands, but it does not cause uterine contractions. Oxytocin is the hormone responsible for that function.
Correct Answer is D
Explanation
A. The thyroid gland functions only as an endocrine gland. It secretes hormones like thyroxine (T4) and triiodothyronine (T3) into the bloodstream, but it does not have an exocrine function.
B. The pituitary gland is an endocrine gland that secretes hormones into the bloodstream but does not have exocrine functions.
C. The hypothalamus is involved in hormone production and regulation but is considered part of the brain rather than an endocrine or exocrine gland itself.
D. The pancreas functions as both an endocrine and exocrine gland. It produces insulin and glucagon (endocrine functions) and secretes digestive enzymes into the small intestine through ducts (exocrine function).
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