Which of the following is a feature of the muscular actions of digestion?
A) Peristalsis begins first in the stomach upon the initiation of the swallowing reflex
B) The colon has the thickest and strongest muscles of the GI organs to withstand the pressure of stool evacuation
C) The jejunum has a third layer of diagonal muscles to enhance contraction and relaxation phases for enhanced digestion
D) Segmentation in the intestines allows periodic squeezing along its length,resulting in momentary reversal of the movement of intestinal contents
Correct Answer:
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Q25: Which of the following is a description
Q26: How many sphincters does the anus contain?
A)1
B)2
C)3
D)4
Q27: What is the function of mucus in
Q28: What is a function of hydrochloric acid
Q29: What is reflux?
A)Hard,dry,stools
B)Backward flow of chyme
C)Soft,poorly formed
Q31: Which of the following is NOT true
Q32: What structure separates the colon from the
Q33: Among the GI tract organs,which has the
Q34: What is the primary function of the
Q35: During the process of digestion,at what point
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