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Frog Body Wall Anatomy Quiz

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Questions and Answers

What are the two main regions of the frog's skin?

Ectoderm and moulting

Malpighian layer and peritoneum

Epidermis and dermis (correct)

Stratum germinativum and stratum corneum

From which embryonic layer is the epidermis of the frog's skin formed?

Peritoneum

Ectoderm (correct)

Endoderm

Mesoderm

What is the name of the innermost layer of the frog's epidermis?

Stratum corneum

Dermis

Peritoneum

Malpighian layer (correct)

What happens to the cells in the Malpighian layer of the frog's skin?

Constantly dividing by mitosis to produce new cells Signup and view all the answers

What is the outermost dead layer of the frog's skin called?

Stratum corneum Signup and view all the answers

Describe the composition of the frog's body wall.

The frog's body wall is made up of the skin, underlying muscles, and an innermost layer of peritoneum. Signup and view all the answers

What are the two main regions of the frog's skin?

The two main regions of the frog's skin are the outer epidermis and the inner dermis. Signup and view all the answers

What is the function of the Malpighian layer in the frog's skin?

The Malpighian layer constantly produces new cells through mitosis, which then move upwards, get flattened, and become keratinized to form the outermost dead layer. Signup and view all the answers

How is the dermis of the frog's skin described?

The dermis is a tough but flexible and vascularized layer. Signup and view all the answers

What happens to the outermost dead layer of the frog's skin?

The outermost dead layer is periodically shed during moulting. Signup and view all the answers

Study Notes

Frog Body Wall Structure

The body wall of frogs serves to cover and protect the organism.
Composed of three layers: skin, underlying muscles, and peritoneum.

Skin Composition

Skin consists of two primary regions: epidermis (outer layer) and dermis (inner layer).

Epidermis

The epidermis is a stratified epithelium featuring multiple cell layers.
Derived from the ectoderm layer of the embryonic development.
Innermost layer known as the Malpighian layer (or stratum Malpighii/stratum germinativum).
Cells in the Malpighian layer are tall, columnar, and constantly divide via mitosis to generate new cells.
Newly formed cells migrate upward, where they become flattened and eventually keratinized.
Surface cells are dead, extremely flat, and comprise the stratum corneum.
The outermost layer (stratum corneum) is shed periodically through a process known as moulting.

Dermis

The dermis is a resilient, vascularized layer that provides strength and flexibility to the skin.
Dermal composition supports the overall structure of the skin and aids in protection.

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Description

Frog Body Wall Anatomy Quiz: Test your knowledge of the frog's body wall, including its skin layers, muscles, and peritoneum. Explore the structure and composition of the epidermis and dermis in this amphibian's protective covering.