The Alimentary Canal: The Stomach (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is the shape of the stomach?
What is the shape of the stomach?
J-shaped
What are the two main functions of the stomach?
What are the two main functions of the stomach?
Stores and digests food
Through which structure does food enter the stomach?
Through which structure does food enter the stomach?
Cardiac sphincter muscle
What is a sphincter muscle?
What is a sphincter muscle?
A circular muscle that can open and close
Which cells produce mucous in the stomach?
Which cells produce mucous in the stomach?
Goblet cells
What pH does hydrochloric acid provide in the stomach?
What pH does hydrochloric acid provide in the stomach?
pH of 1-2
Which inactive enzyme does HCl activate in the stomach?
Which inactive enzyme does HCl activate in the stomach?
Pepsinogen
What does pepsin break proteins down into?
What does pepsin break proteins down into?
Peptides
What protects the stomach wall from being digested by its own enzymes and acid?
What protects the stomach wall from being digested by its own enzymes and acid?
Mucous layer
What is the liquid called that forms when food is churned with gastric juices?
What is the liquid called that forms when food is churned with gastric juices?
Chyme
Why does churning food increase digestion speed?
Why does churning food increase digestion speed?
It increases surface area
Is hydrochloric acid an enzyme?
Is hydrochloric acid an enzyme?
No, it is not an enzyme