A patient who has been diagnosed with intussusception has a problem with the ________.
A. gums
B. esophagus
C. stomach
D. intestine
Answer: D
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Hormones or paracrines that inhibit gastric secretion include ________.
A) ACh B) secretin C) gastrin D) histamine
Each myosin head has a binding site for
A) calcium only. B) actin only. C) ATP only. D) actin and ATP. E) calcium and ATP.
All of these organ systems have exchange of materials as a main function.
A) urinary and digestive B) respiratory and cardiovascular C) cardiovascular and endocrine D) digestive and respiratory E) lymphatic and bone
By the end of 8 weeks, the individual is considered a fetus because
A. the amniotic cavity has formed. B. all the primary germ layers are formed. C. all of the organ systems are present. D. the mesoderm has formed. E. the neural tube and yolk sac have formed.