So-called central lacteals are lymphatic vessels found in the:
a. Lamina propria of villi in the small intestine
b. Muscularis externa of the stomach
c. Muscularis mucosae of the esophagus
d. Myenteric plexus of the large intestine
e. Submucosa of the esophagus
ANS: A
Central lacteals derive their name from the milky fluid with lipid that can be seen within them following absorption of a fat-rich meal.
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A. T1. B. S8. C. C8. D. L5. E. C4.
Which of the following might serve as a secondary pacemaker for the heart?
A) Both AV node and Purkinje fibers B) AV node C) Purkinje fibers D) Neither AV node nor Purkinje fibers
This molecule carries and delivers amino acids during the process of protein synthesis:
a. mRNA b. rRNA c. tRNA d. DNA e. cDNA
Which germ layer is the central nervous system components derived from?
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