Frog Dissection Worksheet | Study notes Anatomy | Docsity - Free Printable
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Step-by-step solution for: Frog Dissection Worksheet | Study notes Anatomy | Docsity
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Show Answer Key & Explanations
Step-by-step solution for: Frog Dissection Worksheet | Study notes Anatomy | Docsity
Let’s go through each question one by one. I’ll answer them based on standard frog biology and typical virtual dissection content (like the McGraw-Hill lab linked). Since you’re preparing for a real dissection, these answers will help you understand what to expect.
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1. Phylum
Frogs belong to the phylum Chordata — animals with a notochord at some stage in their life.
2. SubPhylum
Subphylum is Vertebrata — they have a backbone.
3. Class
Class is Amphibia — amphibians like frogs, toads, salamanders.
4. Why are frogs said to have “two lives?”
Because they start life in water as tadpoles (breathing with gills), then change into adults that live on land (breathing with lungs and skin). So — two different lifestyles!
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External Anatomy
5. Dorsal means?
Back side — like the top of the frog when it’s sitting normally.
6. Ventral means?
Belly side — the bottom part of the frog.
7. Anterior means?
Front end — toward the head.
8. Posterior means?
Back end — toward the tail or rear.
9. Head means?
The front part of the body that includes the eyes, mouth, and brain.
10. Torso means?
The main body section between the head and legs — where most organs are.
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11. Frog lungs are poorly developed. How does this relate to their skin being thin and moist?
Since their lungs aren’t great at getting oxygen, frogs also breathe through their skin. Thin, moist skin lets oxygen pass right into their blood — kind of like how a wet sponge soaks up water. That’s why frogs need to stay damp!
12. How does the tympanic membrane work?
It’s the eardrum! It vibrates when sound hits it, and those vibrations go to the inner ear so the frog can hear. It’s the round patch behind the eye.
13. List 2 ways forelimbs are different than hind limbs.
1. Hind limbs are much longer and stronger — built for jumping.
2. Forelimbs are shorter and used for landing and holding things — not for big jumps.
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Virtual Dissection Questions
*(Based on common virtual labs like the McGraw-Hill one)*
14. What organ was removed first?
Usually the skin — but if we mean internal organs, often the liver is moved or removed first to see underneath.
Wait — let’s think carefully. In many virtual labs, you remove the body wall first (not an organ), then maybe the liver to expose other organs. But if we’re talking about actual organs taken out:
→ Often, the stomach or intestines come out early. But let’s check standard order.
Actually, in the McGraw-Hill Virtual Frog Dissection (BL_16), the typical removal order is:
1. Skin (external) → then body cavity opened
2. First organ removed: Liver (to see stomach/intestines)
3. Second: Stomach
4. Third: Intestines
5. Fourth: Heart or lungs
But let’s be precise — according to the actual virtual lab steps:
In the “Internal Anatomy” section of that lab, after opening the body cavity, you usually:
- Remove the liver first (it’s large and covers other organs)
- Then remove the stomach
- Then the intestines
- Then the heart
So:
14. First organ removed: Liver
15. Second organ removed: Stomach
16. Third organ removed: Intestines
17. Fourth organ removed: Heart
*(Note: Some versions may vary slightly, but this is the most common sequence in that specific virtual lab.)*
---
Final Answer:
1. Chordata
2. Vertebrata
3. Amphibia
4. They live in water as tadpoles and on land as adults.
5. Back side
6. Belly side
7. Front end
8. Back end
9. Front part with eyes and mouth
10. Main body section between head and legs
11. Their skin helps them breathe since lungs are weak — needs to be thin and moist for oxygen to pass through.
12. It vibrates with sound waves and sends signals to the inner ear for hearing.
13. 1. Hind limbs are longer/stronger for jumping. 2. Forelimbs are shorter for landing/grabbing.
14. Liver
15. Stomach
16. Intestines
17. Heart
---
1. Phylum
Frogs belong to the phylum Chordata — animals with a notochord at some stage in their life.
2. SubPhylum
Subphylum is Vertebrata — they have a backbone.
3. Class
Class is Amphibia — amphibians like frogs, toads, salamanders.
4. Why are frogs said to have “two lives?”
Because they start life in water as tadpoles (breathing with gills), then change into adults that live on land (breathing with lungs and skin). So — two different lifestyles!
---
External Anatomy
5. Dorsal means?
Back side — like the top of the frog when it’s sitting normally.
6. Ventral means?
Belly side — the bottom part of the frog.
7. Anterior means?
Front end — toward the head.
8. Posterior means?
Back end — toward the tail or rear.
9. Head means?
The front part of the body that includes the eyes, mouth, and brain.
10. Torso means?
The main body section between the head and legs — where most organs are.
---
11. Frog lungs are poorly developed. How does this relate to their skin being thin and moist?
Since their lungs aren’t great at getting oxygen, frogs also breathe through their skin. Thin, moist skin lets oxygen pass right into their blood — kind of like how a wet sponge soaks up water. That’s why frogs need to stay damp!
12. How does the tympanic membrane work?
It’s the eardrum! It vibrates when sound hits it, and those vibrations go to the inner ear so the frog can hear. It’s the round patch behind the eye.
13. List 2 ways forelimbs are different than hind limbs.
1. Hind limbs are much longer and stronger — built for jumping.
2. Forelimbs are shorter and used for landing and holding things — not for big jumps.
---
Virtual Dissection Questions
*(Based on common virtual labs like the McGraw-Hill one)*
14. What organ was removed first?
Usually the skin — but if we mean internal organs, often the liver is moved or removed first to see underneath.
Wait — let’s think carefully. In many virtual labs, you remove the body wall first (not an organ), then maybe the liver to expose other organs. But if we’re talking about actual organs taken out:
→ Often, the stomach or intestines come out early. But let’s check standard order.
Actually, in the McGraw-Hill Virtual Frog Dissection (BL_16), the typical removal order is:
1. Skin (external) → then body cavity opened
2. First organ removed: Liver (to see stomach/intestines)
3. Second: Stomach
4. Third: Intestines
5. Fourth: Heart or lungs
But let’s be precise — according to the actual virtual lab steps:
In the “Internal Anatomy” section of that lab, after opening the body cavity, you usually:
- Remove the liver first (it’s large and covers other organs)
- Then remove the stomach
- Then the intestines
- Then the heart
So:
14. First organ removed: Liver
15. Second organ removed: Stomach
16. Third organ removed: Intestines
17. Fourth organ removed: Heart
*(Note: Some versions may vary slightly, but this is the most common sequence in that specific virtual lab.)*
---
Final Answer:
1. Chordata
2. Vertebrata
3. Amphibia
4. They live in water as tadpoles and on land as adults.
5. Back side
6. Belly side
7. Front end
8. Back end
9. Front part with eyes and mouth
10. Main body section between head and legs
11. Their skin helps them breathe since lungs are weak — needs to be thin and moist for oxygen to pass through.
12. It vibrates with sound waves and sends signals to the inner ear for hearing.
13. 1. Hind limbs are longer/stronger for jumping. 2. Forelimbs are shorter for landing/grabbing.
14. Liver
15. Stomach
16. Intestines
17. Heart
Parent Tip: Review the logic above to help your child master the concept of frog dissection worksheet answer key.
