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Frog Dissection Prezi

2012 frog dissection

Jessica Frederick

on 3 February 2014

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Transcript of Frog Dissection Prezi

A&P Frog Dissection Prezi
Common Name: Leopard Frog
Scientific Name: Rana Pipiens
-Marshes, Ponds, Lakes, Rivers, or Streams.
-During the warmer weather frogs move to fields.
- Any kind of insects.
- Spiders, Snails, Frogs, Moth, and Butterfly.
Defense Mechanisms
- Camouflage.
- Frogs have Eyes on top of their to help them
with being able to see many angles.
- They can hear, which means they can hear predators.
- Can escape to land and water.
Breeding Behavior
- Breeding starts mid- to late March- Lasts 7 to 28 days and by late April to early May, the egg is produced.
- Male frogs come together in big groups and seek out the females.
- The eggs start to attach and absorb in plant life or go to the body of the water.
-Water temperature is important, frogs like the warm spots for breeding and laying their eggs.
- Frogs like to have open areas.
Egg Development
- 1 to 2 weeks the eggs completely hatch.
- The tadpole is created after 10 to 12 weeks.
-Times can often vary.
Tadpole to Adult
- The process undergoes physical changes
legs in front and back
absorbs tail
Then becomes young adult
- Sexually mature at 3 years old.
- Could be earlier, usually is.
Fun Facts!
1) Northern Leopard Frogs are quite difficult to capture. When approached, they escape in a series of zigzag hops.
2) Northern Leopard Frogs are commonly known as grass frogs, because they spend considerable amounts of time out of water foraging in meadows.
Skin: External Anatomy
Ventral Side
Dorsal Side
Eyes: External Anatomy

Describe the position of the eyes on the head.
- The eyes are located on the side of the head, near thick bone.
How is the position of the eyes helpful to the protection of a frog?
- Since the frog's eyes are located on the side of their head, it gives them good peripheral vision. Peripheral vision gives the frog the ability to see when predators are coming from the side and from the front.
What purpose does the nictitating membrane serve?
- The nictitating membrane does the same job as goggle’s would do for us. They help the frog see better underwater and make sure no debris gets in.
How do they tympanic membranes transmit sound?
- The tympanic membranes are like eardrums and they are located behind the eye. They transmit sound through bones called columella and inner ear.
Legs: External Anatomy
Rear Legs
Front Legs
How do the front legs compare in size to the hind legs?
- The front legs are more muscular, the rear legs are more bony.
How many digits ( fingers) are there on the forelimb as compared to the hind legs?
- There are five on the legs and four on the forelimbs.
What advantage do the structures between the toes provide the frog?
- The frogs can swim better and faster with webbed feet.
Nose and Mouth: External Anatomy
External Nares
Internal Nares
The Mouth
Vomerine Teeth
Maxillary Teeth
Eustachian Tubes
What is a more common name for the external nares?
- The nostrils
What is their function?
- They allow the frog to breath because the nostrils are on the top of the head allow easy access to air even when swimming.
To what internal structures do these connect?
-internal nares
Describe where the tongue is attached?
- It is attached to the skin on the bottom and front of the mouth
How is the attachment different from humans?
-Humans tongues are attached to the back of the mouth, not the bottom.
What advantage is this attachment to the frog?
- The attachment of the tongue to the front of the mouth is an advantage because it is in the front so you can extend their tongue farther and faster.
Describe the shape of the tongue? What is the advantage of being this shape?
-The shape of the tongue is circular and has a "U" like indentation at the top. An advantage to having a circular tongue is it can carry its food to easier, and so when the frog closes its mouth it does not cover the glottis.
This opening allows air to pass into and out of what structures?
-The air passes through the Esophagus.
To what structure does the esophagus lead?
- The esophagus leads to the stomach.
What function do Vomerine Teeth serve?
-They hold captured prey.
What is the function of the Maxillary Teeth?
- They hold food and grip very tightly.
Internal Nares are connected to what external structures?
- They are connected to the roof of the mouth
What is the function of the Eustachian Tubes?
- The Eustachian Tubes open the eardrums, and mainly balance air pressure.

Part 2: Internal Anatomy
Muscular System
Dorsal Side
Ventral Side
Internal Organs
Gall Bladder
Small Intestine
Large Intestine
Fat Bodies
Abdominal Vein
Digestive System/Digestive Tract
Fat Bodies
Gall Bladder
Small Intestine
Large Intestine
1. Do you have any digestive organs that they frog does NOT have?
-The Appendix.
2. What is the function of the liver?
-The function of Frog liver is to detoxify blood, and store starches and fats.
3. What is the function of the gall bladder?
-The function of the Gall Bladder is to store bile which helps break down food.
4. What is the function of the stomach?
-The stomach helps digest the food.
5. What are the specific functions of both the small and large intestine?
- The large intestine reuses water that was not used in digestion and small intestine digests food into nutrients that go into blood stream.
6. What is the function of the fat bodies?
-Fat bodies help keep the frog warm in digestion, gives frog energys, and able frog float.
7.What is the function of the pancreas?
- The pancreas release the chemical enzyme that helps break down food in the small intestine.
How long is the small intestine?
- 21 cm.
How long is the large intestine?
-4 cm
How does the diameter of the small intestines compare to the large intestines?
-The diameter of the large intestine is thicker than the smaller intestine diameter.
How long is the entire digestive system? How does that compare to the length of the space from which it was removed?
- The digestive tract is 28 cm long, which is a little over 5 times the space it was in.
Describe the inside lining of the stomach?
- It has folds inside.
Why does the stomach contain all the folds?
- To increase surface area
Describe anything "special" you found in the stomach?
- Pieces of food
Circulatory System
Describe the heart's location in relation to the lungs and liver.
It is attached to the lungs and above the liver.
What is the function of the circulatory system?
- To remove and carry blood throughout the frog.
How is the frog's hear different from a human heart?
- A frog heart has two atrias and one ventricle and a human heart has two ventricle and two atrias.
Blood coming through the veins from the body collects in what chamber?
- The left atrium
Name a few major organs that these arteries supply.
- Skin, Brain, Lungs, Etc.
To what organ does the artery lead?
- the artery leads away from the lungs.
From what area does the vein come from?
- the vein comes from the lungs back to the heart.
Describe what the spleen looks like.
-A blue ball with tubes hanging out of it, it looks like a balloon.
What is the function of the spleen?
- To remove old red blood cells, and produce new white blood cells.
Respiratory System
Describe the location of the lungs.
-They are attached to the heart.
Describe how the frog is able to breathe using its lungs. Describe the other ways a frog is able to bring oxygen into its blood.
- Air is drawn in through the frogs nostrils to its lungs and body contractions enable them to release carbon dioxide. When the frog is underwater, oxygen is brought in through the skin.

Reproductive System
What is the function of the ovaries?
- to produce eggs

- to serve as a passage way for the eggs

What is the function of the oviducts?
Excretory System
What is the function of the kidney and bladder?
- The kindeys use water to flush out any bad chemicals, leading to the use of the bladder to store the bad chemicals, and then you eliminate the waste through your bladder.

Not my Image: Found on Google
Not my Image: Found on Google
Not my Image: Found on Google
Not my Image: Found on Google
Not my Image: Found on Google
Why are frogs so happy?
They eat whatever bugs them!

Thank You! The End.
Extensors Of The Back
Gluteus Maximus
A lung
Abdominal Vein
Your paper is not as detail as this presentation, please refer to the presentation to point out the various muscles
Full transcript