Bullfrog Dissection

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Last updated 4 years ago

Discipline:
Science
Subject:
Zoology

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Bullfrog Dissection

Sources:http://shs2.westport.k12.ct.us/mjvl/biology/dissect/frog.htm http://www.weehawken.k12.nj.us/weehawken/schools/Roosevelt/304_09/30414/rm30414/science.html

Skin

BullfrogDissection Kaylee & Kylee ArndtDC Anat/Phys P4

The above picture shows a picture of the dorsal skin.The frogs skin is very different from ours. This is because they live on both land and water. It helps protect the frog. "The frog is covered by a soft, thin, moist skin composed of two layers, an outer epidermis and an inner dermis. The skin does not merely protect the frog but also helps in respiration" (Anatomy of the Bull Frog 2). Our skin does not help in respiration, but it is similar to the frog's skin because it helps to protect our body.

Respiratory

Th above picture shows the bullfrogs spine, sacrum, and urostyle. The skeletal system protects and supports the frogs body. The skeletal system is made up many bones including a skull, vertebrae, urostyle, radio-ulna, the humerus, the tibia fibula, and many more (Anatomy of the Bull Frog 1) The frog, unlike humans have "only nine vertebrae" as well as having no ribs (Anatomy of the Bull Frog 1). Some other interesting features of the frog's skeletal system is that they have a flat skull, and like us, have no tail. Unlike us though, they instead have a urostyle, or "tail pillar" that is a "downward extension of tee vertebral column" (Anatomy of the Bull Frog 1). They also have only one " forearm bone, the radio-ulna versus the humans two forearm bones(Anatomy of the Bull Frog 1). Like us, they have a skull that protects the brain.

The image above shows the frog's cloaca.Liquid waste as well as solid waste travels to the cloaca. Liquid waste goes first to the ureters from the kidneys and then "to the urinary bladder" where it then goes to the cloaca (Anatomy of the Bull Frog 3). Solid wastes from the large intestine goes straight into the cloaca (Anatomy of the Bull Frog 3) The human anatomy does not have a cloaca, though we do have kidneys as well as a bladder that is a part of our digestive system.

The above image show the beginning of the digestive system, the mouth.Like human's, the "frog's mouth is where digesting begins. It is equipped with feeble, practically useless teeth...The frog's teeth are highly specialized...the tip of the tounge is folded backward toward the throat. From this...the frog can flick it out rapidly to grasp...prey" the tounge is also sticky " to better hold its prey" (Anatomy of the Bull Frog 3). This is different from the human body where the tounge is connected to the dorsal part of our mouth, and where our tounge is rough not sticky. After the mouth, food travels to the stomach from the esophagus (Anatomy of the Bull Frog 3). It then moves to the small intestine where "most of the digestive occurs"(Anatomy of the Bull Frog 3). This is similar to the humans mode of digestion.

The above photo shows the female eggs and Fallopian tubes.The female Fallopian tubes increase in size to accomidate the eggs that the female produces. They then push them out and store them in their body until they lay them. This is different from the anatomy of the human because we only have about one egg at a time so our Fallopian tubes stay the same in size. A similarity to the human anatomy are the reproductive organs, Fallopian tubes,ovaries, and oviducts (The Frog Reproductive System).

Skeletal System

Urinary

Digestive

Reproductive

The above picture shows a picture of the frogs lungs.Like us, " frogs have paired...lungs" (Anatomy of the Bull Frog 2). Unlike us, however, " the mechanism of breathing...is different" (Anatomy of the Bull Frog 2). This is because "the frog has no ribs or diaphragm" whereas humans do (Anatomy of the Bull Frog 2). Another difference is "when a frog submerges beneath the water, all its respiration takes place through the skin" (Anatomy of the Bull Frog 2).

ToPurpose: To compare and contrast the anatomies of the Bull Frog and the human. compare and contrast the anatomies of the Bull Frog and the human.

Purpose: To compare and contrast the anatomies of the Bull Frog and the human.

Purpose: To compare and contrast the anatomies of the Bull Frog and the human.


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