Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
779 views
in Psychology by (71.1k points)

Gastric 

A. Acid secretion in response to a lowered blood sugar is mediated by the hormone gastrin. 

B. Emptying is facilitated by sympathetic nerve activity. 

C. Acid secretion increases when histamine H2, muscarinic M1 or gastrin receptors are activated. 

D. Acid secretion is inhibited by the presence of food in the duodenum. 

E. Contraction waves pass over the stomach at a rate of about ten per minute. 

1 Answer

+1 vote
by (65.7k points)
selected by
 
Best answer

A. False It is mediated through a vagal reflex and is absent in vagotomized stomachs. 

B. False This delays gastric emptying. 

C. True Histamine from mast-like cells activates H2 receptors, acetylcholine from parasympathetic nerve endings activates M1 receptors and gastrin activates gastrin receptors. 

D. True The neural/hormonal mechanisms responsible for the inhibition are not certain. 

E. False The normal rate is around 3/minute.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...