What is chyme and how is it formed?
A mixture of digested food and bile, formed in the small intestine
A sugar-based fluid produced in the mouth during chewing
A byproduct of nutrient absorption in the large intestine
A partially digested, acidic mixture created by mechanical churning in the stomach
The Correct Answer is D
A. A mixture of digested food and bile, formed in the small intestine: By the time food enters the small intestine and mixes with bile, it is already considered chyme. Bile facilitates emulsification but is not the primary agent of chyme formation. Chyme originates more proximally.
B. A sugar-based fluid produced in the mouth during chewing: The product formed in the mouth is a bolus, which consists of masticated food and saliva. It is not yet acidic or liquefied. The transformation into chyme requires gastric acid and muscular contractions.
C. A byproduct of nutrient absorption in the large intestine: The material in the large intestine is referred to as fecal matter or stool. Chyme is the precursor to this, existing primarily in the stomach and small intestine. The colon removes water from chyme.
D. A partially digested, acidic mixture created by mechanical churning in the stomach: Chyme results from the mechanical action of gastric smooth muscle mixing the bolus with hydrochloric acid and pepsin. This process liquefies food into a creamy, semi-fluid mass. It is the form in which food exits the stomach.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Segmentation uses migrating motility complexes to move chyme:Migrating motility complexes are a form of peristalsis that occurs during the post-absorptive state to clear the bowel. Segmentation is characterized by localized, rhythmic contractions of circular muscle. It does not involve migrating complexes.
B. Segmentation mixes and exposes chyme to the mucosa, not for propulsion:Segmentation involve stationary, oscillating contractions that move chyme back and forth. This maximizes contact with the absorptive surface and mixes contents with digestive juices. It is the primary motion during active digestion.
C. Segmentation pushes chyme forward, while peristalsis mixes it:This choice inverts the definitions of the two movements. Peristalsis is the sequential contraction that propels contents anterograde through the tract. Segmentation is specifically designed for mixing rather than forward movement.
D. Segmentation occurs only after the small intestine is emptied:Segmentation is the predominant movement during the presence of food in the small bowel. Once the intestine is empty, the motility pattern shifts to the migrating motor complex. It is an active digestive process.
Correct Answer is A
Explanation
True:Haustra are small pouches created by the tonic contraction of the taeniae coli, which are shorter than the colon itself. This bunching gives the large intestine its characteristic sacculated appearance. They facilitate slow movement and water absorption.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.