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NurseDive Free Nursing Practice Question
The small intestine uses segmentation to mix chyme with digestive enzymes, increase its contact with the mucosa, and propel it forward through the digestive tract.
A. false
B. true
This question is an excerpt from Nurse Dive's nursing test bank - Anatomy and physiology proctored exam ( hellen fluid college). Take the full exam now
Full Explanation
Segmentation is a type of intestinal contraction that mixes chyme with digestive enzymes and increases its contact with the mucosa, facilitating digestion and absorption. Propulsion is primarily accomplished by peristalsis, not segmentation. This statement is accurate in describing segmentation's role in the small intestine.
Similar Questions
The gene that codes for the testis-determining factor (TDF) is found in or on the
A. Y chromosome
Y chromosome: The SRY gene on the Y chromosome codes for the testis-determining factor (TDF), which initiates the development of testes and male characteristics.
B. gonadal ridges
Gonadal ridges: The gonadal ridges are the precursor structures that develop into gonads but do not contain the gene for TDF.
C. X chromosome
X chromosome: The X chromosome contains genes important for development but does not code for TDF.
D. fetal testes
Fetal testes: The fetal testes produce testosterone but are not the source of the TDF gene.
Full Explanation
A. Y chromosome: The SRY gene on the Y chromosome codes for the testis-determining factor (TDF), which initiates the development of testes and male characteristics.
B. Gonadal ridges: The gonadal ridges are the precursor structures that develop into gonads but do not contain the gene for TDF.
C. X chromosome: The X chromosome contains genes important for development but does not code for TDF.
D. Fetal testes: The fetal testes produce testosterone but are not the source of the TDF gene.
Which of the following is the accessory organ of digestion responsible for producing bile?
A. Pancreas
Pancreas produces digestive enzymes and bicarbonate but does not produce bile.
B. Liver
Liver produces bile, which is essential for fat digestion. This is the correct answer.
C. Tongue
Tongue assists in food manipulation and initial digestion through saliva but does not produce bile.
D. Salivary glands
Salivary glands produce saliva, which contains digestive enzymes but not bile.
Full Explanation
A. Pancreas produces digestive enzymes and bicarbonate but does not produce bile.
B. Liver produces bile, which is essential for fat digestion. This is the correct answer.
C. Tongue assists in food manipulation and initial digestion through saliva but does not produce bile.
D. Salivary glands produce saliva, which contains digestive enzymes but not bile.
Cleavage results in daughter cells containing half the number of chromosomes of the parent cell.
A. false
B. true
Full Explanation
Cleavage is a series of rapid mitotic divisions of a fertilized egg (zygote) that results in daughter cells (blastomeres) with the same number of chromosomes as the parent cell. However, if the context was about meiosis, then the statement would be accurate. Since the question does not specify meiosis, this is true for cleavage in general.