2022-2023): Essentials in Nutrition: Portage Learning
(Questions with Solutions)
Digestion: - ANSWER-is the process of transforming food into basic
nutrients that can be absorbed across the wall of the GI tract; once
absorbed, the nutrients can be used to fuel our cells for growth, fight
infection, and provide energy to our muscles and brain to perform daily
activities
The GI tract is a long hollow tube that begins: - ANSWER-with the mouth
and ends at the anus
The innermost layer of the GI tract is known as the _______ or _______.
This is made up of absorptive cells and glands. - ANSWER-intestinal wall;
mucosa
Ulcers/Peptic ulcer: - ANSWER-a sore that develops on the lining of the
esophagus, stomach, or small intestine
The other layers of the GI tract are compromised of ________. There job is
to: - ANSWER-circular and longitudinal muscles; is to mix the food and
move it along the GI tract
What are the organs apart of the digestive process, but not apart of the GI
tract: - ANSWER-salivary glands, liver, gallbladder, and pancreas
There are six specific parts of the GI tract: - ANSWER-the mouth,
esophagus, stomach. small intestine, large intestine, and the rectum
, BIOD 121 Module 2 Exam (2 Versions)(Latest updated,
2022-2023): Essentials in Nutrition: Portage Learning
(Questions with Solutions)
What role do organs play in the digestion system: - ANSWER-to produce
and secrete substances that aid in digestion
In the digestive system,the breakdown of food into smaller units involves: -
ANSWER-chemical and mechanical processes
There are 3 processes that the body can use to absorb nutrients from the
GI tract into the blood or lymph system and eventually into the cells. What
are they: - ANSWER-passive diffusion, facilitated diffusion, and active
transport
Passive diffusion: - ANSWER-in which substances move easily in and out
of the cells without the use of energy
Facilitated diffusion: - ANSWER-is a process in which special protein
carriers are needed to help substances cross into or out of the cell/ No
energy is required in this
Active Transport: - ANSWER-is when energy is needed to get the
substance into or out of the cell
Before food enters the mouth, the digestive process actually begins with a
variety of stimulus. Name 5: - ANSWER-1. cognition - thoughts about food
start the slow of saliva
2. sound - hearing a description of a meal
3. odor - the smell of the food stimulates your hunger response and aids in
taste
, BIOD 121 Module 2 Exam (2 Versions)(Latest updated,
2022-2023): Essentials in Nutrition: Portage Learning
(Questions with Solutions)
4. appearance - seeing it
5. taste - how it feels when the food enters the mouth
Where is the mouth on the GI tract and what is its function: - ANSWER-it is
the beginning of the GI tract; its function of the mouth is to alter the food
particles to prepare them to be swallowed
The tongue gives us the ability to taste. What are the five flavors that an be
identified: - ANSWER-sweet, salty, sour bitter, and umami
The end by product of digestion in the mouth is known as a: - ANSWER-
bolus
What is the esophagus and is its role: - ANSWER-it is the tube that
connects the throat with the stomach; its role is to transport food to the
stomach
During the swallowing process foods land on a flap of tissue called the
__________. What is its role: - ANSWER-epiglottis; it folds down over the
trachea/windpipe during swallowing to prevent food from entering the
trachea
Without the epiglottis: - ANSWER-food could accidentally enter the trachea
and the result would be chocking
What is the esophageal sphincter and where is it located: - ANSWER-it is a
circular muscle that closes once food moves through the stomach to
, BIOD 121 Module 2 Exam (2 Versions)(Latest updated,
2022-2023): Essentials in Nutrition: Portage Learning
(Questions with Solutions)
prevent back flow of stomach contents unto the esophagus; it is located at
the end of the esophagus
The stomach has a _______ cup capacity and can hold food for _______
or longer, until it is ready to pass into the small intestine. - ANSWER-4; 2-3
hours
What is the role of the stomach: - ANSWER-to store, mix, dissolve, and
continue digestion of food
Pepsin: - ANSWER-is an enzyme that breaks down proteins
Gastric Lipase: - ANSWER-an enzyme that begins fat digestion
What is the purpose of digestion: - ANSWER-in which the nutrients we
consume in our food would never get to the cells in our body
The mixing of the food particles with the acids and enzymes produces a
substance called: - ANSWER-chyme
What is chyme: - ANSWER-a very watery mixture that slowly empties from
the stomach into the small intestine
What is the pyloric sphincter and where is it located: - ANSWER-it controls
the release of chyme into the small intestine; it is located in the stomach