Exam (elaborations)
DIGESTIVE SYSTEM STUDY GUIDE AND MCQ QUIZZ WITH ANSWERS
- Course
- Institution
This document include study guide for digestive system and MCQs with answers related to it with explanation.
[Show more]
Seller
Follow
annasony
Content preview
DIGESTIVE SYSTEM STUDY GUIDE AND MCQSCIENCE- Objective question with answers of Digestive System
The digestive system is a group of organs that work together to break down food into
nutrients that the body can absorb and use for energy, growth, and repair. The digestive
system is made up of the gastrointestinal tract (GI tract) and accessory organs.
The GI tract is a long, muscular tube that runs from the mouth to the anus. It is made
up of the following organs:
o Mouth: The mouth is where food is chewed and mixed with saliva. Saliva
helps to moisten food and make it easier to swallow.
o Esophagus: The esophagus is a muscular tube that carries food from the mouth
to the stomach.
o Stomach: The stomach is a muscular sac that mixes food with digestive juices.
The digestive juices break down food into smaller molecules.
o Small intestine: The small intestine is where most of the digestion and
absorption of nutrients takes place.
o Large intestine: The large intestine absorbs water and salts from digested food.
It also stores waste products until they are eliminated from the body.
The accessory organs of the digestive system are the liver, pancreas, and gallbladder.
These organs produce substances that are needed for digestion.
o Liver: The liver produces bile, which helps to break down fats. It also stores
glucose and other nutrients.
o Pancreas: The pancreas produces enzymes that help to digest carbohydrates,
proteins, and fats.
o Gallbladder: The gallbladder stores bile that is produced by the liver. Bile is
released into the small intestine when food is present.
The digestive system works through a series of steps:
1. Ingestion: Food is taken into the mouth.
2. Propulsion: Food is moved through the GI tract by muscular contractions.
3. Mechanical digestion: Food is broken down into smaller pieces by the teeth and the
muscular walls of the GI tract.
, 4. Chemical digestion: Food is broken down into smaller molecules by digestive
enzymes.
5. Absorption: Nutrients are absorbed into the bloodstream through the walls of the
small intestine.
6. Defecation: Waste products are eliminated from the body through the anus.
The digestive system is a complex system that is essential for the body to function properly.
When the digestive system is not working properly, it can lead to a variety of health
problems. Some common digestive problems include indigestion, constipation, diarrhoea, and
heartburn. If you are experiencing any digestive problems, it is important to see a doctor to
get a diagnosis and treatment.
Here are some tips for keeping your digestive system healthy:
Eat a healthy diet that includes plenty of fruits, vegetables, and whole grains.
Drink plenty of fluids, especially water.
Exercise regularly.
Get enough sleep.
Manage stress.
Avoid smoking and excessive alcohol consumption.
See your doctor for regular checkups.
MCQ with answers on Digestive system
1. Which of the following enzymes is associated with digestion of starch in human body?
o Pepsin
o Lipase
o Amylase
o Insulin
o None of the above
Pepsin is an essential enzyme in the digestive systems of humans and animals, responsible for
breaking down proteins into amino acids for energy, growth, and repair. It is produced in the gastric
chief cells of the stomach lining and is an aspartic protease, cleaving peptide bonds on the amino-
terminal side of certain amino acids. Pepsin is most active at an acidic pH of 1.5 to 2.5, created by
hydrochloric acid (HCl) produced in the stomach. It is used in various industrial applications, such as
the leather industry and the recovery of silver from discarded photographic films. Although pepsin is
safe and effective when used appropriately, it can cause side effects like heartburn, nausea, and
vomiting.
Lipase is an enzyme that breaks down fats in food, produced in the pancreas, mouth, and stomach. It
is essential for converting triglycerides into fatty acids and glycerol, which are the main type of fat in
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller annasony. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$11.18. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now