How does the lymphatic system contribute to maintaining fluid balance in the body?
By absorbing excess interstitial fluid and returning it to the blood
By controlling the osmotic pressure in blood vessels
By producing hormones that regulate fluid secretion
By filtering toxins from the bloodstream
The Correct Answer is A
A. By absorbing excess interstitial fluid and returning it to the blood: The lymphatic system collects fluid that leaks from capillaries into tissues, known as interstitial fluid, and transports it back to the circulatory system, preventing edema and maintaining fluid balance.
B. By controlling the osmotic pressure in blood vessels: Osmotic pressure is primarily regulated by plasma proteins and electrolytes, not directly by the lymphatic system.
C. By producing hormones that regulate fluid secretion: Hormonal regulation of fluid balance involves organs like the kidneys and adrenal glands, not the lymphatic system.
D. By filtering toxins from the bloodstream: Lymph nodes filter lymph to remove pathogens and debris, which supports immunity but does not directly regulate fluid balance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Isovolumetric contraction: This phase occurs at the beginning of ventricular systole, where the ventricles contract with no change in volume because all valves are closed, and it does not involve filling.
B. Diastole: Diastole is the phase of the cardiac cycle when the ventricles relax and fill with blood from the atria. It ensures adequate ventricular volume before the next contraction, allowing efficient circulation.
C. Systole: Systole refers to ventricular contraction, during which blood is ejected into the aorta and pulmonary artery, not filling.
D. Ejection phase: The ejection phase is part of systole when the ventricles pump blood into the arteries. Ventricular filling occurs prior to this phase during diastole.
Correct Answer is B
Explanation
A. Lymph vessels: Lymph vessels transport interstitial fluid and do not play a direct role in regulating blood pressure or circulatory resistance during shock.
B. Arterioles: Arterioles are small resistance vessels that regulate blood flow and systemic vascular resistance through constriction or dilation, making them critical in maintaining perfusion during shock.
C. Capillaries: Capillaries are the site of nutrient and gas exchange, but they do not actively control vessel tone or systemic blood pressure.
D. Large veins: Large veins serve as capacitance vessels and blood reservoirs; their tone affects venous return, but arteriolar constriction is more directly responsible for perfusion changes in shock.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.