Q:

What is a pithed frog?

A:

Quick Answer

Pithed frogs have undergone the pithing procedure, which involves a needle inserted through the foramen magnum into the cranial cavity. Pithing mechanically causes disruptions within the frog's brain, and it is an approved euthanasia method for amphibians.

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Full Answer

Pithing a frog is performed in scientific experiments concerning frog reflexes, and a second step, "double pithing," involves destroying the spinal cord, again testing behavior reflexes. The scientific reasoning behind pithing a frog is to determine which behaviors require the spinal cord and brain working together, which behaviors require the spinal cord only or brain only, and which behaviors require neither. Frogs should be cleaned prior to pithing.

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Related Questions

  • Q:

    How does a frog breathe?

    A:

    A frog breathes through its skin, the inner surface of its mouth and its lungs, depending on its circumstances. When their skin is moist, and particularly when they are in water where it is their only form of gas exchange, they breathe through their skin. When it is necessary, such as on land, they take air into their lungs by pushing it from their mouths with their nostrils closed.

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  • Q:

    What do you do with your tadpole once it begins to develop into a frog?

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    As your tadpole undergoes metamorphosis into an adult frog, it is very important to provide simple access from the water to land. Since gills stop functioning with the onset of lungs, developing animals may drown if they are unable to easily climb to land.

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  • Q:

    What is a frog's integumentary system?

    A:

    According to the Seoul National University College of Veterinary Medicine, the integumentary system of the frog includes the skin, hair follicles, sweat and sebaceous glands, digital organs and glands. The integumentary system’s main purpose is to provide protection from disease, viruses and from physical damage.

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  • Q:

    What is a frog's average lifespan?

    A:

    A frog's lifespan ranges from five to 16 years, depending on the species and whether the frog lives outdoors or indoors. The majority of tadpoles, the young of outdoor frogs, succumb to predators before fully metamorphosing into frogs at 12 to 14 weeks of age.

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