Which of the following are functions of estrogen? (Select all that apply)
Protects against heart disease
Helps regulate the menstrual cycle
Promotes bone growth
Increases testosterone production
Correct Answer : A,B,C
A. Protects against heart disease: Estrogen has several effects on the cardiovascular system (improving lipid profile and vascular function) that are thought to reduce cardiovascular risk prior to menopause.
B. Helps regulate the menstrual cycle: Estrogen is a key ovarian hormone that helps regulate the growth of the endometrium and the timing of the menstrual cycle .
C. Promotes bone growth: Estrogen is essential for bone homeostasis, inhibiting bone resorption and helping maintain bone density .
D. Increases testosterone production: Estrogen does not increase testosterone production; testosterone is produced by Leydig cells in males (and ovaries/adrenals in females) and is not a primary product increased by estrogen .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Dyspnea: Dyspnea means difficult or labored breathing (shortness of breath), not normal resting breathing.
B. Eupnea: Eupnea refers to normal, unlabored breathing at rest.
C. Apnea: Apnea means a temporary absence of breathing (no breathing), not normal respiration.
D. Hyperpnea: Hyperpnea means increased depth and/or rate of breathing (e.g., during exercise), not the normal resting pattern.
Correct Answer is D
Explanation
A. Produce surfactant for the alveoli: Surfactant is produced by type II pneumocytes in the alveoli, not by tracheal cartilage.
B. Move mucus towards the alveoli using their cilia: Mucus is moved by ciliated epithelium (mucociliary escalator), not by cartilage rings.
C. Perform external respiration between air and blood: Gas exchange (external respiration) occurs in alveoli, not at the trachea.
D. Allow the trachea to always remain open for passage of air: The C-shaped cartilage rings provide rigid structural support and prevent tracheal collapse while allowing the posterior tracheal wall to flex -this maintains an open airway.
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