COPY: Digestion Part 1 SBI3U

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Questions and Answers

What is the main difference between mechanical and chemical digestion?

Mechanical digestion involves physical breakdown of food, while chemical digestion involves the breakdown of food using enzymes.

What is the function of the circulatory system in the digestive process?

The circulatory system transports digested nutrients from the digestive system to the cells.

What is an example of a simple animal with a digestive sac?

A jellyfish is an example of a simple animal with a digestive sac.

What are the four main steps of the digestive process?

The four main steps are ingestion, digestion, absorption, and egestion. Signup and view all the answers

What type of digestion occurs in the mouth, stomach, and small intestine?

Chemical digestion occurs in the mouth, stomach, and small intestine. Signup and view all the answers

What is a characteristic of a complete digestive system?

A complete digestive system has two openings, one for intake and one for waste elimination. Signup and view all the answers

What is the primary function of amylase in the digestion process?

Breaking down starch into disaccharides Signup and view all the answers

What is the purpose of mucus in saliva?

Acts as a lubricant to aid in swallowing Signup and view all the answers

What is the term for the process of taking food in and swallowing it?

Ingestion Signup and view all the answers

What type of muscle contractions occur in the esophagus to propel food towards the stomach?

Peristalsis Signup and view all the answers

What is the main function of the stomach in the digestion process?

Mechanical and chemical digestion Signup and view all the answers

What is the maximum capacity of the stomach in terms of volume?

Up to 2L Signup and view all the answers

What is the average length of the gastrointestinal tract in humans, and what factors can influence its length?

The average length of the gastrointestinal tract is approximately 7-9 meters, and its length can vary depending on age and size. Signup and view all the answers

What are the two main types of digestion that occur in the mouth, and what are their roles in breaking down food?

The two main types of digestion that occur in the mouth are physical digestion, which breaks down food into smaller pieces using teeth, and chemical digestion, which breaks down food using enzymes in saliva. Signup and view all the answers

What is the role of the accessory organs in the digestion process, and what are some examples of these organs?

The accessory organs, such as the salivary glands, pancreas, liver, and gall bladder, aid in digestion by producing enzymes and other chemicals that help break down food. Signup and view all the answers

What is the primary function of the enzyme amylase in saliva, and how does it contribute to chemical digestion?

The primary function of amylase is to break down complex carbohydrates, such as starches, into simpler sugars, contributing to chemical digestion in the mouth. Signup and view all the answers

What is the relationship between the type of teeth an animal has and its diet, and how do herbivores and carnivores differ in this regard?

The type of teeth an animal has is directly related to its diet, with herbivores having more molars for grinding and crushing plant material, and carnivores having more canines for tearing and piercing meat. Signup and view all the answers

What are the six main stops in the journey of digestion, and what is the primary function of each stop?

The six main stops in the journey of digestion are: 1) Mouth, 2) Esophagus, 3) Stomach, 4) Small Intestine, 5) Large Intestine, and 6) Rectum and Anus. Each stop has a specific function in the digestion and absorption of nutrients. Signup and view all the answers

Flashcards

Mechanical vs. Chemical Digestion

Physical breakdown of food vs. enzyme breakdown.

Circulatory System's Role

It transports digested nutrients to cells.