Frog Digestive System Diagram - Detailed labeling of internal organs involved in digestion.
Diagram showing the anatomy of a frog's digestive system, including labeled parts such as the mouth, esophagus, stomach, liver, pancreas, small intestine, and large intestine.
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Show Answer Key & Explanations
Step-by-step solution for: Frog Dissection Pre Lab Answer Key PDF Form - Fill Out and Sign ...
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Show Answer Key & Explanations
Step-by-step solution for: Frog Dissection Pre Lab Answer Key PDF Form - Fill Out and Sign ...
Here are the answers to the questions on your worksheet based on the provided text.
1. How many different types of cells can be observed in one cell phase in our intestine?
Looking at the section "Digestive System," the text lists the following cell types: stem cells, absorptive cells, goblet cells, enteroendocrine cells, and Paneth cells.
Counting them gives us a total of 5.
2. What is the function of each type of these cells?
Based on the descriptions in parentheses in the text:
* Stem cells: They renew (make new cells).
* Absorptive cells: They absorb nutrients.
* Goblet cells: They secrete mucus.
* Enteroendocrine cells: They sense stimuli.
* Paneth cells: They defend against bacteria.
3. How does the frog breathe?
The text states that frogs have lungs but also breathe through their skin. It says: "Frogs have lungs... but they also breathe through their skin."
4. The frog has three chambers (2 atriums + 1 ventricle). A reptile (human heart has 4 chambers; 2 of each) this means there are no separate circuits for oxygenated and de-oxygenated blood.
*(Note: This appears to be a statement/fact on the sheet rather than a question, but here is the clarification based on the text)*:
The text explains that because the frog heart has only 3 chambers, there is some mixing of blood, unlike humans who have 4 chambers to keep oxygen-rich and oxygen-poor blood completely separate.
5. Describe the path of digestion in the frog.
According to the "Digestion" section, the path is:
Mouth $\rightarrow$ Esophagus $\rightarrow$ Stomach $\rightarrow$ Small Intestine $\rightarrow$ Large Intestine $\rightarrow$ Cloaca.
(The text notes: "Food passes from mouth to esophagus... then into stomach... then into small intestine... then into large intestine... finally out through cloaca.")
6. How do frogs reproduce?
The text states under "Reproduction": Frogs lay eggs in water. The eggs hatch into tadpoles, which eventually turn into adult frogs.
7. What is metamorphosis?
Metamorphosis is the process where a tadpole changes into an adult frog. The text describes it as the stage where the tadpole grows legs, loses its tail, and develops lungs to live on land.
8. Why is the frog's skin important?
The skin is important because frogs breathe through it (gas exchange) and it helps them stay moist. The text mentions they need moist skin to breathe properly.
9. What is the purpose of the nictitating membrane?
The text says the nictitating membrane is a "clear eyelid" that protects the eye while allowing the frog to see underwater.
10. How does the frog catch its food?
The frog uses its long, sticky tongue. The text says: "Frogs catch prey with their long, sticky tongues."
11. What is the difference between the male and female frog?
The main difference mentioned is size and sound. Males are usually smaller and make sounds (croak) to attract females. Females are larger because they carry eggs.
12. Why do frogs need to live near water?
They need water to lay their eggs (since the eggs do not have shells and would dry out on land) and to keep their skin moist for breathing.
13. What is the function of the tympanic membrane?
The tympanic membrane is the eardrum. Its function is to hear sounds/vibrations.
14. What is the cloaca?
The cloaca is the single opening at the end of the digestive tract where waste, urine, and reproductive cells (eggs/sperm) all exit the body.
15. How does the frog's circulatory system differ from a human's?
A frog has a 3-chambered heart (2 atria, 1 ventricle), while a human has a 4-chambered heart (2 atria, 2 ventricles). This means a frog's blood mixes slightly, whereas human blood stays fully separated.
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Final Answer:
1. 5 types of cells.
2. Stem cells (renew), Absorptive cells (absorb nutrients), Goblet cells (secrete mucus), Enteroendocrine cells (sense stimuli), Paneth cells (defend).
3. Through lungs and through their skin.
4. (Statement of fact regarding heart chambers).
5. Mouth $\rightarrow$ Esophagus $\rightarrow$ Stomach $\rightarrow$ Small Intestine $\rightarrow$ Large Intestine $\rightarrow$ Cloaca.
6. They lay eggs in water which hatch into tadpoles.
7. The change from a tadpole (water-breathing) to an adult frog (lung-breathing).
8. For breathing (gas exchange) and protection.
9. To protect the eye underwater while still allowing vision.
10. Using a long, sticky tongue.
11. Males are smaller and croak; females are larger and carry eggs.
12. To lay eggs (which need water) and to keep skin moist for breathing.
13. It is the eardrum used for hearing.
14. The common exit hole for digestive waste, urine, and reproduction.
15. Frogs have a 3-chambered heart; humans have a 4-chambered heart.
1. How many different types of cells can be observed in one cell phase in our intestine?
Looking at the section "Digestive System," the text lists the following cell types: stem cells, absorptive cells, goblet cells, enteroendocrine cells, and Paneth cells.
Counting them gives us a total of 5.
2. What is the function of each type of these cells?
Based on the descriptions in parentheses in the text:
* Stem cells: They renew (make new cells).
* Absorptive cells: They absorb nutrients.
* Goblet cells: They secrete mucus.
* Enteroendocrine cells: They sense stimuli.
* Paneth cells: They defend against bacteria.
3. How does the frog breathe?
The text states that frogs have lungs but also breathe through their skin. It says: "Frogs have lungs... but they also breathe through their skin."
4. The frog has three chambers (2 atriums + 1 ventricle). A reptile (human heart has 4 chambers; 2 of each) this means there are no separate circuits for oxygenated and de-oxygenated blood.
*(Note: This appears to be a statement/fact on the sheet rather than a question, but here is the clarification based on the text)*:
The text explains that because the frog heart has only 3 chambers, there is some mixing of blood, unlike humans who have 4 chambers to keep oxygen-rich and oxygen-poor blood completely separate.
5. Describe the path of digestion in the frog.
According to the "Digestion" section, the path is:
Mouth $\rightarrow$ Esophagus $\rightarrow$ Stomach $\rightarrow$ Small Intestine $\rightarrow$ Large Intestine $\rightarrow$ Cloaca.
(The text notes: "Food passes from mouth to esophagus... then into stomach... then into small intestine... then into large intestine... finally out through cloaca.")
6. How do frogs reproduce?
The text states under "Reproduction": Frogs lay eggs in water. The eggs hatch into tadpoles, which eventually turn into adult frogs.
7. What is metamorphosis?
Metamorphosis is the process where a tadpole changes into an adult frog. The text describes it as the stage where the tadpole grows legs, loses its tail, and develops lungs to live on land.
8. Why is the frog's skin important?
The skin is important because frogs breathe through it (gas exchange) and it helps them stay moist. The text mentions they need moist skin to breathe properly.
9. What is the purpose of the nictitating membrane?
The text says the nictitating membrane is a "clear eyelid" that protects the eye while allowing the frog to see underwater.
10. How does the frog catch its food?
The frog uses its long, sticky tongue. The text says: "Frogs catch prey with their long, sticky tongues."
11. What is the difference between the male and female frog?
The main difference mentioned is size and sound. Males are usually smaller and make sounds (croak) to attract females. Females are larger because they carry eggs.
12. Why do frogs need to live near water?
They need water to lay their eggs (since the eggs do not have shells and would dry out on land) and to keep their skin moist for breathing.
13. What is the function of the tympanic membrane?
The tympanic membrane is the eardrum. Its function is to hear sounds/vibrations.
14. What is the cloaca?
The cloaca is the single opening at the end of the digestive tract where waste, urine, and reproductive cells (eggs/sperm) all exit the body.
15. How does the frog's circulatory system differ from a human's?
A frog has a 3-chambered heart (2 atria, 1 ventricle), while a human has a 4-chambered heart (2 atria, 2 ventricles). This means a frog's blood mixes slightly, whereas human blood stays fully separated.
──────────────────────────────────────
Final Answer:
1. 5 types of cells.
2. Stem cells (renew), Absorptive cells (absorb nutrients), Goblet cells (secrete mucus), Enteroendocrine cells (sense stimuli), Paneth cells (defend).
3. Through lungs and through their skin.
4. (Statement of fact regarding heart chambers).
5. Mouth $\rightarrow$ Esophagus $\rightarrow$ Stomach $\rightarrow$ Small Intestine $\rightarrow$ Large Intestine $\rightarrow$ Cloaca.
6. They lay eggs in water which hatch into tadpoles.
7. The change from a tadpole (water-breathing) to an adult frog (lung-breathing).
8. For breathing (gas exchange) and protection.
9. To protect the eye underwater while still allowing vision.
10. Using a long, sticky tongue.
11. Males are smaller and croak; females are larger and carry eggs.
12. To lay eggs (which need water) and to keep skin moist for breathing.
13. It is the eardrum used for hearing.
14. The common exit hole for digestive waste, urine, and reproduction.
15. Frogs have a 3-chambered heart; humans have a 4-chambered heart.
Parent Tip: Review the logic above to help your child master the concept of frog dissection worksheet answers.
