Name this valve:
Ileoappendix
Pyloric sphincter
Duodenorenal
Ileocecal
The Correct Answer is D
A. Ileoappendix: Not a standard anatomical valve -the term suggests a junction with the appendix but is not the valve between small and large intestine.
B. Pyloric sphincter: The pyloric sphincter is between the stomach and duodenum, not at the ileum–cecum junction.
C. Duodenorenal: Not a recognized valve -describes a relation between duodenum and kidney region, not a valve.
D. Ileocecal: The ileocecal (ileocecal/ileocecal) valve is the sphincter at the junction of the terminal ileum and cecum that controls flow of chyme into the large intestine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Ileocecal sphincter:the ileocecal valve/sphincter regulates flow from ileum to cecum in the GI tract, unrelated to urinary control.
B. Internal urethral sphincter: Incorrect (mostly involuntary) -the internal sphincter (smooth muscle) provides involuntary control of urine retention at the bladder neck via autonomic regulation.
C. Internal anal sphincter: the internal anal sphincter controls fecal continence (involuntary), not urinary flow.
D. External urethral sphincter: the external urethral sphincter is skeletal muscle under voluntary control and allows conscious initiation or delay of urination.
Correct Answer is C
Explanation
A. Break down ingested foods: The digestive system performs mechanical and chemical breakdown (e.g., chewing, enzymes) of ingested food.
B. Digest ingested foods to release nutrients: Digestion (chemical breakdown) releases absorbable nutrients (amino acids, monosaccharides, fatty acids).
C. Production of red blood cells: Hematopoiesis (production of RBCs) occurs mainly in bone marrow (and in fetal life the liver/spleen), not as a function of the digestive tract.
D. Excretion of waste products: The digestive system eliminates undigested material and some metabolic wastes as feces.
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