esophagus - 2025 ACF Regionals

Question

When monitoring the pH of this organ, a Demeester score of 14.72 or higher indicates acid reflux disease, which may cause a premalignant condition in it named for surgeon Norman Barrett. For 10 points each:

[10e] Name this organ that can be damaged by upward movement of stomach acid while passing food from the pharynx to the stomach.

ANSWER: esophagus

[10m] Proton pump inhibitors are often used to treat acid reflux, and have largely replaced medications targeting this compound’s H2 receptors. Enterochromaffin-like cells release this compound to stimulate stomach acid production.

ANSWER: histamine

[10h] PPIs can also be used to treat this condition in which tumors that secrete gastrin cause excess stomach acid to be produced from parietal cells, creating peptic ulcers.

ANSWER: Zollinger–Ellison syndrome [or Z-E syndrome]

<MS, Biology>

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Summary


California	2025-02-01	Y	3	10.00	100%	0%	0%
Florida	2025-02-01	Y	3	13.33	100%	33%	0%
Great Lakes	2025-02-01	Y	6	10.00	100%	0%	0%
Lower Mid-Atlantic	2025-02-01	Y	6	10.00	100%	0%	0%
Midwest	2025-02-01	Y	6	13.33	100%	17%	17%
North	2025-02-01	Y	3	10.00	100%	0%	0%
Northeast	2025-02-01	Y	5	8.00	80%	0%	0%
Overflow	2025-02-01	Y	5	14.00	100%	20%	20%
South Central	2025-02-01	Y	2	5.00	50%	0%	0%
Southeast	2025-02-01	Y	3	10.00	100%	0%	0%
UK	2025-02-01	Y	10	11.00	90%	20%	0%
Upper Mid-Atlantic	2025-02-01	Y	7	11.43	86%	29%	0%
Upstate NY	2025-02-01	Y	3	10.00	100%	0%	0%

Data


Michigan A	Case Western B	10	0	0	10
Michigan C	Michigan State	10	0	0	10
William & Mary	Liberty A	10	0	0	10
Georgetown A	Georgetown B	10	0	0	10
Texas A	Texas B	10	0	0	10
Georgia Tech A	Georgia Tech B	10	0	0	10
Claremont A	UC Berkeley B	10	0	0	10
Carnegie Mellon A	Michigan D	10	0	0	10
Michigan B	Ohio State B	10	0	0	10
Virginia Tech A	Liberty C	10	0	0	10
UNC B	Duke	10	0	0	10
South Carolina	UNC D	10	0	0	10
Virginia A	Liberty B	10	0	0	10
UNC C	Wake Forest	10	0	0	10
WashU B	Indiana B	10	0	0	10
Winona State	Carleton	10	0	0	10
Wisconsin A	Minnesota B	10	0	0	10
Harvard A	Brown A	10	0	0	10
MIT A	BU	10	0	0	10
Northwestern A	Iowa	10	10	10	30
Northwestern B	Notre Dame A	10	0	0	10
Notre Dame C	Notre Dame B	10	0	0	10
Stanford B	Purdue	10	0	0	10
ASU	TAMU	0	0	0	0
Georgia Tech C	Georgia Tech D	10	0	0	10
Tennessee A	Vanderbilt A	10	0	0	10
Cambridge D	Southampton A	10	0	0	10
Cambridge E	Manchester	10	0	0	10
Cambridge A	Durham	10	0	0	10
Oxford A	Imperial B	10	0	0	10
Sheffield	Cambridge B	10	0	0	10
Southampton B	Imperial A	10	10	0	20
Cornell B	Maryland A	10	10	0	20
Columbia C	Maryland B	10	0	0	10
John Jay College	Rutgers A	10	0	0	10
Binghamton A	RIT A	10	0	0	10
Cornell C	ESF A	10	0	0	10
UCLA	Claremont B	10	0	0	10
UC Berkeley A	UCSD	10	0	0	10
Florida A	UCF C	10	10	0	20
UCF B	Florida B	10	0	0	10
Florida State A	Valencia A	10	0	0	10
Case Western A	Carnegie Mellon B	10	0	0	10
Ohio State A	Kenyon	10	0	0	10
WashU A	Chicago A	10	10	10	30
Chicago C	Chicago D	10	0	0	10
Chicago B	Illinois A	10	0	0	10
Illinois C	Missoui S&T	10	0	0	10
Missouri	Illinois B	10	0	0	10
Iowa State	Wisconsin B	10	0	0	10
Brandeis B	Dartmouth A	10	0	0	10
Harvard B	Tufts A	10	0	0	10
UMass Boston	Brandeis A	0	0	0	0
Bristol	LSE	10	0	0	10
Cambridge C	NYU C	10	10	0	20
Oxford B	Warwick A	10	0	0	10
Oxford C	Warwick B	0	0	0	0
George Washington A	George Washington B	0	0	0	0
Johns Hopkins A	Columbia B	10	0	0	10
Penn A	Vassar A	10	0	0	10
NYU A	Yale A	10	10	0	20
RIT B	Cornell D	10	0	0	10