Breathing with the head inside a paper bag can lead to
urinary acidosis
urinary alkalosis
respiratory acidosis
metabolic alkalosis
metabolic acidosis
The Correct Answer is C
A. urinary acidosis: The renal system responds to systemic acid-base imbalances by secreting hydrogen ions or reabsorbing bicarbonate, but it is not the primary physiological state induced by localized rebreathing. Urinary changes are a compensatory mechanism rather than the direct result of the respiratory disturbance. This choice confuses a compensatory response with the primary insult.
B. urinary alkalosis: The kidneys would excrete bicarbonate in an attempt to compensate for alkalosis, not the acidosis caused by carbon dioxide retention. Rebreathing into a bag leads to hypercapnia, which necessitates an acidic urinary response for compensation. Therefore, an alkaline urine profile would be inappropriate and physiologically counterproductive in this specific clinical scenario.
C. respiratory acidosis: Rebreathing into a paper bag causes the accumulation of expired carbon dioxide within the bag, which is then inhaled. This leads to hypercapnia, an increase in the partial pressure of carbon dioxide in the blood, shifting the bicarbonate buffer equation toward hydrogen ion production. The resulting decrease in systemic pH is classified as respiratory acidosis.
D. metabolic alkalosis: This condition is characterized by an primary increase in bicarbonate or a loss of metabolic acids, such as through severe vomiting. Breathing into a bag affects the volatile acid, carbon dioxide, rather than metabolic fixed acids or bases. Consequently, this respiratory intervention cannot directly induce a primary metabolic alkaline state.
E. metabolic acidosis: Metabolic acidosis arises from the accumulation of non-volatile acids like lactic acid or ketones, or the loss of bicarbonate. While respiratory acidosis can coexist with metabolic issues, the act of rebreathing specifically targets the respiratory component of acid-base balance. It does not primarily alter the metabolic production or excretion of fixed acids.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. prostate gland: The prostate secretes a slightly acidic fluid that contains enzymes and helps activate sperm. While it contributes to the semen, its primary role is not the initial neutralization of the urethra before ejaculation. Its secretions are mixed with sperm during the emission phase of the male sexual act.
B. bulbourethral gland: These glands, also known as Cowper's glands, secrete a clear, alkaline mucus into the spongy urethra during sexual arousal. This fluid neutralizes traces of acidic urine that could be harmful to sperm and provides lubrication for the glans. This occurs prior to the actual ejaculation of semen.
C. epididymis: The epididymis is the site for sperm storage and maturation rather than an accessory secretory gland for urethral neutralization. It adds a small amount of fluid to the sperm bolus, but this fluid does not enter the urethra until the moment of ejaculation. It lacks the volume and pH to neutralize the entire urethral pathway.
D. seminal glands: These glands produce a yellowish, alkaline fluid rich in fructose that makes up about 70 percent of semen. While the fluid is alkaline, it is released during ejaculation to neutralize the acidic environment of the vagina. It does not serve as the primary pre-ejaculatory urethral neutralizer.
Correct Answer is D
Explanation
A. deepening of the voice: This is a secondary sex characteristic associated with androgens like testosterone, which cause the larynx to enlarge and the vocal cords to thicken. Estrogen does not induce these changes. In females, the voice remains higher because estrogen lacks the anabolic effect on laryngeal cartilage.
B. increased oiliness of the skin: Sebaceous gland activity is primarily stimulated by androgens in both males and females. High levels of estrogen typically have a moderating effect on skin oils and can lead to smoother skin texture. Increased sebum production and acne are more commonly associated with the hormonal shifts of puberty.
C. the reduction of progesterone: Estrogen does not typically reduce progesterone levels; in fact, estrogen often primes tissues by upregulating progesterone receptors. In the menstrual cycle, estrogen levels rise during the follicular phase, while progesterone levels rise later during the luteal phase. These hormones work synergistically to prepare the uterus for pregnancy.
D. growth of the breasts at puberty: Estrogen is the primary hormone responsible for the development of female secondary sexual characteristics. It stimulates the ductal system of the mammary glands and promotes the deposition of adipose tissue in the breasts. This process is a hallmark of female physical maturation during the pubertal transition.
E. growth of the larynx: As with the deepening of the voice, significant laryngeal growth is an androgenic effect seen predominantly in males. Estrogen does not cause the prominent thyroid cartilage growth known as the Adam's apple. Female laryngeal structures remain smaller and less prominent due to the lack of high testosterone levels.
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