The _____________ regulates the flow of contents from the stomach to the duodenum.
fundus
gastric rugae
pyloric sphincter
antrum
The Correct Answer is C
A. Fundus is the upper part of the stomach, which does not regulate the flow of contents to the duodenum.
B. Gastric rugae are folds in the stomach lining that allow for expansion but do not regulate the flow of contents to the duodenum.
C. Pyloric sphincter controls the flow of partially digested food (chyme) from the stomach into the duodenum.
D. Antrum is the lower portion of the stomach that helps in mixing and grinding food but does not directly regulate its flow to the duodenum.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The digestive system's primary functions are to process food, extract nutrients for the body’s use, and eliminate indigestible waste material as feces.
Correct Answer is B
Explanation
A. During pubarche: Pubarche refers to the onset of puberty, but oogenesis (the formation of oocytes) begins much earlier, during embryonic development.
B. During embryonic development: Oogenesis begins during embryonic development when the female fetus's ovaries form and start producing primary oocytes. These oocytes remain in a suspended state until puberty.
C. During thelarche: Thelarche is the onset of breast development during puberty, but oogenesis starts long before this, during embryonic development.
D. At birth: While primary oocytes are present at birth, the process of oogenesis actually begins during embryonic development, not at birth.
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