Luteinizing Hormone (LH) is responsible for triggering ovulation in females. What is its primary role in males?
Stimulation of hair follicles
Regulating gamete production and maturation
Stimulating estrogen production
Stimulating testosterone production
The Correct Answer is D
A. Stimulation of hair follicles: Hair follicle activity is influenced by androgens (testosterone), but LH does not directly stimulate hair follicles -not LH’s primary role.
B. Regulating gamete production and maturation: FSH primarily stimulates Sertoli cells and spermatogenesis; LH contributes indirectly via testosterone but LH itself mainly stimulates hormone production -part of the broader regulation but not the primary direct role.
C. Stimulating estrogen production: LH does not primarily stimulate estrogen production in males; estrogen in males arises by aromatization of androgens and is not LH’s main target.
D. Stimulating testosterone production: LH acts on Leydig cells in the testes to stimulate testosterone synthesis, which is LH’s primary role in males.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","D","E"]
Explanation
A. Converted to carbon monoxide: CO (carbon monoxide) is a different gas and is not a product or transport form of CO₂.
B. Bind to myoglobin: Myoglobin primarily binds O₂ within muscle cells; CO₂ transport by myoglobin is not a main mechanism.
C. Binds to hemoglobin: CO₂ can bind to hemoglobin (forming carbaminohemoglobin) as one transport form.
D. Converted to bicarbonate ions: Most CO₂ is converted to bicarbonate (HCO₃⁻) in red blood cells and transported in plasma.
E. Dissolved in plasma: A small proportion of CO₂ is carried dissolved directly in plasma.
Correct Answer is C
Explanation
A. Break down ingested foods: The digestive system performs mechanical and chemical breakdown (e.g., chewing, enzymes) of ingested food.
B. Digest ingested foods to release nutrients: Digestion (chemical breakdown) releases absorbable nutrients (amino acids, monosaccharides, fatty acids).
C. Production of red blood cells: Hematopoiesis (production of RBCs) occurs mainly in bone marrow (and in fetal life the liver/spleen), not as a function of the digestive tract.
D. Excretion of waste products: The digestive system eliminates undigested material and some metabolic wastes as feces.
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