Defecation reflex US Medical PG Flashcards - Medical Study Cards
Master Defecation reflex with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Defecation reflex Flashcard Deck - 10 Cards
Flashcard 1: Intestinal peristalsis occurs in response to binding of _____ to intrinsic primary afferent neurons (IPANs)
Answer: 5-HT (serotonin)
Flashcard 2: Primary achalasia is due to an autoimmune destruction of ganglion cells in the _____ plexus
Answer: myenteric (Auerbach)
Flashcard 3: The _____ nervous system is usually inhibitory on functions of the GI tract
Answer: sympathetic
Flashcard 4: The _____ nervous system can direct all functions of the GI tract, even in the absence of extrinsic innervation (e.g. PNS/SNS)
Answer: enteric
Flashcard 5: The _____ plexus of the gut wall primary controls secretion and blood flow
Answer: submucosal (Meissner's)
Flashcard 6: _____ contractions serve to mix intestinal contents; "back-and-forth movement"
Answer: Segmentation
Flashcard 7: satiety
Answer: ventromedial area of the hypothalamus
Flashcard 8: What is the function of the area postrema?
Answer: emetic center of brain
Flashcard 9: Give two cell types rich in rough endoplasmic reticulum (RER).
Answer: intestinal goblet cells, plasma cells
Flashcard 10: Is the plasma membrane symmetric or asymmetric?
Answer: asymmetric interior vs exterior
asymmetric regionally on same side
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