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Questions and Answers
The circular muscles contract, making the lumen of the alimentary canal smaller and squeezing food __________.
forwards
The __________ mixes the food with saliva and forms it into a bolus.
tongue
The stomach is a muscular organ that churns and mixes food with __________ juices.
gastric
Most digestion and absorption of nutrients takes place in the __________.
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The large intestine absorbs water and forms __________.
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The __________ produces bile, which helps to break down fats.
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The gall bladder stores and releases bile into the __________.
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The pancreas produces __________ that help to digest carbohydrates, proteins, and fats.
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The process of breaking down food into smaller molecules that can be absorbed is called __________.
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The process of taking in nutrients from digested food is known as __________.
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Study Notes
Digestive Process
- Circular muscles contract to reduce the lumen size of the alimentary canal, pushing food forward.
- Longitudinal muscles relax, allowing the alimentary canal walls to expand.
The Mouth
- Ingestion occurs using teeth, lips, and tongue to break food into smaller pieces.
- Tongue mixes food with saliva, forming a bolus for swallowing.
- Saliva, produced by salivary glands, aids in moistening food and initiating digestion.
Relevant Organs
- Major organs involved in digestion include:
- Nasal cavity
- Tongue
- Salivary glands and ducts
- Trachea
- Oesophagus
- Stomach
- Pancreas
- Small intestine (duodenum and ileum)
- Large intestine (colon, rectum, anus)
- Liver
- Gall bladder
- Bile duct
- Pancreatic duct
- Caecum
- Appendix
Organ Functions
- Stomach: Churns and mixes food with gastric juices.
- Small Intestine: Primary site for digestion and nutrient absorption.
- Large Intestine: Absorbs water and forms faeces.
- Liver: Produces bile for fat breakdown.
- Gall Bladder: Stores and releases bile into the small intestine.
- Pancreas: Produces enzymes for digesting carbohydrates, proteins, and fats.
- Salivary Glands: Produce saliva that begins digestion.
Digestive Processes
- Digestion: Breaks down food into smaller absorbable molecules.
- Absorption: Nutrients from digested food enter the body.
- Egestion: Eliminates waste products from the body.
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Description
Test your knowledge about the human digestive system and the processes involved, such as peristalsis and the roles of various muscles. This quiz covers essentials from ingestion to the movements within the alimentary canal. Dive in to learn more about how our body processes food!
