HUN 1201 NUTRITION EXAM 1 QUESTIONS WITH
VERIFIED ANSWERS
The Gastrointestinal (GI) tract - Answers - A convoluted tube that runs throughout the
length of the body, from the mouth to the anus
Sphincters - Answers - Segments of the GI tract are separated from each other by
circular muscles called?
Sphincters function - Answers - They can open and close when needed, so the food
material does not slush around randomly from one segment to the other.
Saliva - Answers - Is secreted by the salivary glands, and its main role is to prepare the
bolus.
Several enzymes in saliva? - Answers - Lysozyme & Amylase
Function of Lysozyme - Answers - Bacteria killing enzyme
Has antiseptic properties? - Answers - Saliva
HCl - Answers - Hydrochloric acid and digestive enzyme
Function of Amylase? - Answers - Breaks down complex sugars (starches).
Function of Lipases. - Answers - Breaks down lipids/fats
Function of Mouth - Answers - Mechanically breaks down food and mixes it with saliva
Bolus - Answers - Chewed food ready to be swallowed
Parotid pair is what and is located where? - Answers - Salivary gland located in front of
the ears.
Sublingual pair is what and is located where? - Answers - Salivary gland located under
the tongue
Submandibular pair is what and is located where? - Answers - Salivary gland located on
the sides, under the jawbone.
Epiglottis - Answers - Guardes the Trachea
Pharynx - Answers - Food cavity in the back of the mouth
, Trachea - Answers - Windpipe in fornt of the the esophagus, closed under the skin of
the neck. It is always open and built of cartilaginous rings.
Esophagus - Answers - Food way behind the trachea, it is soft and rubbery- made of
muscle. It stays closed when not in use.
The lower esophageal sphincter connects the esophagus to the..... - Answers -
Stomach
GERD (gastroesophageal reflux disease) - Answers - When the stomach contents can
spill back into the esophagus.
Boluses are turned into a paste-like material called - Answers - Chyme
The stomach secretes a special protein that are important for the absorption of vitamin
B12 called - Answers - Intrinsic factor
Role of the stomach - Answers - To kill microorganisms
Denaturation - Answers - When proteins loose their 3D shape in the stomach.
How many digestive enzymes are in the stomach and what are they? - Answers - 2 /
Pepsin & Gastric lipase
Pepsin is what? - Answers - An enzyme that cuts up proteins.
Gastric lipase function / found where? - Answers - 'chews' on lipids / in stomach
The lower part of the stomach finishes in what? - Answers - Pyloric sphincter.
The pyloric sphincter connects the stomach to the first portion of the small intestine
called what? - Answers - The duodenum
Duodenum, jejunum, and Ileum. - Answers - The small intestine is divided into three
parts named what?
to digest foods and absorb the nutrients into the blood stream. - Answers - The main
role of the small intestine is ?
The 1st level of folding in the small intestine are circular folds or pleats, then on the
surface of the folds there are - Answers - Villi
Villi are what and have what on the surface? - Answers - Villi are fingerlike protrusions.
There are microvilli on the surface of the Villi.
What is inside the villi? - Answers - lacteals
VERIFIED ANSWERS
The Gastrointestinal (GI) tract - Answers - A convoluted tube that runs throughout the
length of the body, from the mouth to the anus
Sphincters - Answers - Segments of the GI tract are separated from each other by
circular muscles called?
Sphincters function - Answers - They can open and close when needed, so the food
material does not slush around randomly from one segment to the other.
Saliva - Answers - Is secreted by the salivary glands, and its main role is to prepare the
bolus.
Several enzymes in saliva? - Answers - Lysozyme & Amylase
Function of Lysozyme - Answers - Bacteria killing enzyme
Has antiseptic properties? - Answers - Saliva
HCl - Answers - Hydrochloric acid and digestive enzyme
Function of Amylase? - Answers - Breaks down complex sugars (starches).
Function of Lipases. - Answers - Breaks down lipids/fats
Function of Mouth - Answers - Mechanically breaks down food and mixes it with saliva
Bolus - Answers - Chewed food ready to be swallowed
Parotid pair is what and is located where? - Answers - Salivary gland located in front of
the ears.
Sublingual pair is what and is located where? - Answers - Salivary gland located under
the tongue
Submandibular pair is what and is located where? - Answers - Salivary gland located on
the sides, under the jawbone.
Epiglottis - Answers - Guardes the Trachea
Pharynx - Answers - Food cavity in the back of the mouth
, Trachea - Answers - Windpipe in fornt of the the esophagus, closed under the skin of
the neck. It is always open and built of cartilaginous rings.
Esophagus - Answers - Food way behind the trachea, it is soft and rubbery- made of
muscle. It stays closed when not in use.
The lower esophageal sphincter connects the esophagus to the..... - Answers -
Stomach
GERD (gastroesophageal reflux disease) - Answers - When the stomach contents can
spill back into the esophagus.
Boluses are turned into a paste-like material called - Answers - Chyme
The stomach secretes a special protein that are important for the absorption of vitamin
B12 called - Answers - Intrinsic factor
Role of the stomach - Answers - To kill microorganisms
Denaturation - Answers - When proteins loose their 3D shape in the stomach.
How many digestive enzymes are in the stomach and what are they? - Answers - 2 /
Pepsin & Gastric lipase
Pepsin is what? - Answers - An enzyme that cuts up proteins.
Gastric lipase function / found where? - Answers - 'chews' on lipids / in stomach
The lower part of the stomach finishes in what? - Answers - Pyloric sphincter.
The pyloric sphincter connects the stomach to the first portion of the small intestine
called what? - Answers - The duodenum
Duodenum, jejunum, and Ileum. - Answers - The small intestine is divided into three
parts named what?
to digest foods and absorb the nutrients into the blood stream. - Answers - The main
role of the small intestine is ?
The 1st level of folding in the small intestine are circular folds or pleats, then on the
surface of the folds there are - Answers - Villi
Villi are what and have what on the surface? - Answers - Villi are fingerlike protrusions.
There are microvilli on the surface of the Villi.
What is inside the villi? - Answers - lacteals
