Chemical Digestion and Nutrient Absorption Process Quiz

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Which enzyme works well in an acidic environment to break down large proteins into smaller sizes?

Intrinsic factor

Rennin (correct)

Amylase

Gastrin

What is the function of intrinsic factor in the process of digestion?

Aiding in the absorption of vitamin B12 (correct)

Mixing food with digestive enzymes

Breaking down proteins

Digesting carbohydrates

What enzyme continues to digest carbohydrates in the stomach?

Pepsin

Gastrin

Amylase (correct)

Rennin

Where are proteins digested in the human body?

Both in the stomach and small intestine Signup and view all the answers

Which substance is used for coating the stomach to protect it?

Mucus Signup and view all the answers

What is the main function of mucous neck cells in the stomach?

To protect the stomach lining with mucus Signup and view all the answers

Which hormone is primarily secreted by the enteroendocrine cells in the stomach?

Gastrin Signup and view all the answers

What is the role of amylase in saliva?

Digests starch Signup and view all the answers

During swallowing, what is the function of the epiglottis?

Close the trachea (windpipe) Signup and view all the answers

What is the purpose of peristalsis in the digestive tract?

Move food along the digestive tract Signup and view all the answers

Which region of the stomach exhibits tonic contractions?

Oral region of the stomach Signup and view all the answers

Which part of the small intestine is the longest and has the most coiled appearance?

Ilium Signup and view all the answers

What is the function of Brunner's gland located in the small intestine?

Produces mucus to help neutralize acidic chyme Signup and view all the answers

What type of epithelium is present in the small intestine lining?

Simple columnar epithelium Signup and view all the answers

Which part of the small intestine has the most circular folds known as plicae circulares?

Jejunum Signup and view all the answers

What is the specific function of Peyer's patches found in the small intestine?

Act as an immune defense mechanism Signup and view all the answers

Which part of the small intestine lacks submucosal glands?

Jejunum Signup and view all the answers

What is the main function of mechanical digestion?

To physically break down food into smaller units Signup and view all the answers

Where does the main duct eventually drain into?

Duodenum Signup and view all the answers

Which structure is responsible for draining bile directly into the duodenum above the common bile duct?

Accessory duct Signup and view all the answers

What is the role of the accessory duct in digestion?

To provide an alternative route for bile drainage Signup and view all the answers

How does the arterial supply of the GI tract contribute to digestion?

By providing oxygen and nutrients to the digestive organs Signup and view all the answers

Where is the head of the pancreas located?

In the Duodenal curve Signup and view all the answers

Which part of the pancreas is triangular and lies horizontally in front of the Abdominal aorta?

Body Signup and view all the answers

What structure is the tail of the pancreas related to functionally?

Spleen Signup and view all the answers

What is the function of the pancreatic duct?

To transport enzymes to aid in digestion Signup and view all the answers

Which part of the pancreas contains islets of langerharns that secrete various hormones?

Tail Signup and view all the answers