Which of the following statements regarding ureters is correct?
Ureters are connected inside the urinary bladder by a two-way valve.
Ureters are fibrotic tubes connecting the kidneys to the urinary bladder.
Ureters are covered by an outer layer of epithelial tissue
Ureters are extraperitoneal tubular structures.
The Correct Answer is D
a. Ureters are connected inside the urinary bladder by a two-way valve: The ureters connect to the urinary bladder through openings that act as one-way valves to prevent urine from flowing back into the ureters.
b. Ureters are fibrotic tubes connecting the kidneys to the urinary bladder: Ureters are not fibrotic; they are muscular tubes lined with a mucous membrane that propels urine from the kidneys to the bladder.
c. Ureters are covered by an outer layer of epithelial tissue: The outermost layer of the ureters is actually composed of connective tissue (adventitia), not epithelial tissue.
d. Ureters are extraperitoneal tubular structures: This is correct. Ureters are located outside the peritoneal cavity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a. Endoplasmic reticulum: The ER is involved in protein and lipid synthesis but is not the primary site of ATP synthesis.
b. Ribosome: Ribosomes are involved in protein synthesis but do not play a direct role in ATP production.
c. Mitochondria: Mitochondria are known as the powerhouses of the cell because they generate ATP through cellular respiration. Enzymes in the mitochondria facilitate the release of energy from nutrients, which is then used to recharge ATP molecules.
d. Lysosome: Lysosomes contain digestive enzymes that break down waste materials and cellular debris, but they do not produce ATP.
Correct Answer is C
Explanation
a: Chest cavity compresses the lungs - This is incorrect; during inspiration, the chest cavity expands, not compresses.
b: Length of the thoracic cavity decreases - This is incorrect; during inspiration, the thoracic cavity increases in length as it expands.
c. Diameter of the thoracic cavity increases. When inspiratory muscles contract, such as the diaphragm and external intercostal muscles, the thoracic cavity expands, increasing its volume. This expansion decreases the pressure within the lungs, causing air to flow in (inspiration).
d: Diaphragm rises up in the abdomen - This is incorrect; during inspiration, the diaphragm contracts and moves downward, not upward.
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