Name any two substances secreted into an animal's digestive system and in each case name the organ that secretes it - Leaving Cert Agricultural Science - Question c - 2014
Question c
Name any two substances secreted into an animal's digestive system and in each case name the organ that secretes it.
Draw a diagram of the digestive system of a fow... show full transcript
Worked Solution & Example Answer:Name any two substances secreted into an animal's digestive system and in each case name the organ that secretes it - Leaving Cert Agricultural Science - Question c - 2014
Step 1
Name any two substances secreted into an animal's digestive system and in each case name the organ that secretes it.
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Answer
Bile: Secreted by the liver.
Saliva: Secreted by the salivary glands.
Step 2
Draw a diagram of the digestive system of a fowl and label four parts not found in mammals.
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Answer
The diagram should include the following parts, which are unique to the avian digestive system:
Beak: The mouth structure used for ingesting food.
Crop: A storage pouch where food is temporarily held before digestion.
Proventriculus: The glandular stomach where digestive enzymes are added to the food.
Gizzard: A muscular part of the stomach that grinds food, often with the help of small stones.
Cloaca: The common opening for the digestive and urogenital tracts.
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