The outermost layer of the digestive tract, which is composed of a thin layer of areola tissue:
mucosa (mucous membrane)
serosa (mesentery)
muscularis externa
submucosa
The Correct Answer is B
A. Mucosa (mucous membrane): The mucosa is the innermost layer of the digestive tract, not the outermost. It includes the epithelium, lamina propria, and muscularis mucosae.
B. Serosa (mesentery): The serosa is the outermost layer of the digestive tract in parts where it is covered by peritoneum. It consists of a thin layer of areolar tissue topped by simple squamous epithelium.
C. Muscularis externa: The muscularis externa is a layer of muscle in the digestive tract, located beneath the serosa. It is not the outermost layer.
D. Submucosa: The submucosa is a layer of connective tissue located between the mucosa and muscularis externa. It is not the outermost layer.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. K+: Potassium (K+) is the most abundant cation in the intracellular fluid (ICF). This is the correct answer.
B. Ca2+: Calcium (Ca2+) is not the most abundant cation in the ICF; it is found in lower concentrations within cells compared to potassium.
C. Cl-: Chloride (Cl-) is the most abundant anion in the extracellular fluid (ECF), not in the intracellular fluid.
D. Na: Sodium (Na) is the most abundant cation in the extracellular fluid (ECF), not in the intracellular fluid.
Correct Answer is A
Explanation
Cleavage is a series of rapid mitotic divisions of a fertilized egg (zygote) that results in daughter cells (blastomeres) with the same number of chromosomes as the parent cell. However, if the context was about meiosis, then the statement would be accurate. Since the question does not specify meiosis, this is true for cleavage in general.
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