Which of the following structures controls the release of chyme into the duodenum?
Pyloric sphincter
Lower esophageal sphincter
Ileocecal sphincter
Internal anal sphincter
The Correct Answer is A
a. Pyloric sphincter: This sphincter regulates the passage of chyme from the stomach into the duodenum.
b. Lower esophageal sphincter: This sphincter prevents the backflow of stomach contents into the esophagus.
c. Ileocecal sphincter: This controls the flow of material from the ileum of the small intestine into the cecum of the large intestine.
d. Internal anal sphincter: This sphincter controls the release of feces from the rectum but is not involved in the release of chyme
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
a: Testes - The testes are located outside the body cavity within the scrotum and are responsible for producing sperm and testosterone.
b. Prostate: The prostate gland is a male reproductive organ located at the neck of the bladder and surrounds the urethra. It plays a role in the production of seminal fluid, which nourishes and transports sperm.
c: Rugae - Rugae are folds in the mucous membrane lining the urinary bladder that allow it to stretch as it fills with urine; they do not surround the urethra.
d: Bulbourethral - The bulbourethral glands (Cowper's glands) are pea-sized glands located below the prostate gland that secrete a clear fluid into the urethra during sexual arousal, but they do not surround the urethra at the neck of the bladder.
Correct Answer is D
Explanation
a. Prothrombin: This is a protein involved in blood clotting, not in maintaining colloid osmotic pressure.
b. Globulins: These are involved in immune responses and transportation of substances but are not the primary proteins for colloid osmotic pressure.
c. Fibrinogen: This is a clotting factor that helps in blood coagulation, not in colloid osmotic pressure.
d. Albumin: Albumin is the main plasma protein responsible for maintaining colloid osmotic pressure, which helps to keep fluid within the blood vessels.
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