Frog External Anatomy Flashcards

Questions and Answers

What is the scientific name for the field frog?

Ranna vittegera (correct)

Rana

Ranidae

Ranna catesbeina

What is the scientific name for the bullfrog?

Ranna catesbeina (correct)

Rana

Ranna vittegera

Ranidae

What are the two major parts of the body of a frog?

Axial region, appendicular region

What is the axial region composed of?

Head and trunk Signup and view all the answers

What is the appendicular region composed of?

Appendages or limbs Signup and view all the answers

What is the snout of a frog?

Triangular protruding region of the head Signup and view all the answers

Where are the eyes of a frog located?

On the sides of the head Signup and view all the answers

What do the eyes of a frog consist of?

Upper eyelids, lower eyelids, and nictitating membrane Signup and view all the answers

What is the 3rd eyelid of a frog called?

Nictitating membrane Signup and view all the answers

What are the nostrils of a frog also known as?

External nares Signup and view all the answers

How many small openings are near the tip of a frog's snout?

Two Signup and view all the answers

What is the tympanic membrane?

A small round arc of thickened membrane behind each eye Signup and view all the answers

Where is the brow spot located on a frog?

At the median dorsal part of the head in front of the eyes Signup and view all the answers

What does the term 'hump' refer to in frog anatomy?

Marked elevation on the mid-dorsal part of the trunk near the posterior end Signup and view all the answers

What is the anus in frogs?

Small opening at the dorsal end of the trunk Signup and view all the answers

What is the function of the anus in frogs?

Serves for the exit of reproductive cells, excretory products, and undigested food matter Signup and view all the answers

What do the two forelimbs on the anterior end of the trunk consist of?

Upper arm, forearm, wrist, manus Signup and view all the answers

What is the manus?

Hand with four digits or fingers Signup and view all the answers

What do the two hindlimbs on the posterior end of the trunk consist of?

Thigh, shank or middle portion, ankles, with webbed toes Signup and view all the answers

What is a prehallux?

A sixth toe Signup and view all the answers

Where is the prehallux located?

On the inner side of the foot near the most proximal toe Signup and view all the answers

What is the hallux?

The most proximal toe Signup and view all the answers

What is the skeleton?

Essential part of the body machine of every vertebrate animal Signup and view all the answers

What are the three important functions of the skeleton?

Serves as a framework, provides a surface for muscle attachment, and supplies calcium to the blood cells Signup and view all the answers

How is the endoskeleton of vertebrates divided?

Into axial and appendicular skeleton Signup and view all the answers

What does the axial skeleton consist of?

Skull, visceral skeleton, vertebral column, ribs (absent in frogs), and sternum Signup and view all the answers

What does the appendicular skeleton include?

Bones of the limbs and limb girdles that are attached to the axial skeleton Signup and view all the answers

What are forelimbs?

Front legs Signup and view all the answers

What are hindlimbs?

Back legs Signup and view all the answers

What is the phylum of a frog?

Chordata Signup and view all the answers

What is the subphylum of a frog?

Vertebrata Signup and view all the answers

What class do frogs belong to?

Amphibia Signup and view all the answers

What is the order of frogs?

Anura Signup and view all the answers

What family do frogs belong to?

Ranidae Signup and view all the answers

What is the genus of a frog?

Rana Signup and view all the answers

Study Notes

Frog Species and Anatomy

Ranna vittegera refers to the Field Frog.
Ranna catesbeina is known as the Bullfrog.
Frogs have an anatomy divided into two major parts: the axial region, which includes the head and trunk, and the appendicular region, consisting of the limbs.

External Structures

The snout is a triangular protruding region on the frog's head.
Eyes are located on the sides of the head and consist of upper and lower eyelids, along with a nictitating membrane, which functions as a third eyelid.
Nostrils, also called external nares, are small openings near the tip of the snout.
The tympanic membrane, a thickened membrane behind each eye, plays a crucial role in hearing.
A brow spot is a lightly colored area in front of the eyes at the median dorsal part of the head.
The hump is an elevation located on the mid-dorsal trunk near the posterior end.
The anus is found at the dorsal end of the trunk, serving for the exit of reproductive cells, waste, and undigested matter.

Limb Anatomy

The frog's forelimbs, located at the anterior end of the trunk, consist of the upper arm, forearm, wrist, and manus (hand) which has four digits.
The hindlimbs at the posterior end consist of the thigh, shank, ankles, and feature webbed toes.
The prehallux is a sixth toe located on the inner side of the foot, near the most proximal toe, while the hallux is the most proximal toe.

Skeletal System

The skeleton is a vital component of all vertebrates, providing structural support and protection for softer body parts.
Three primary functions of the skeleton:
- Acts as a framework or support.
- Provides a surface for muscle attachment, aiding in movement and locomotion.
- Supplies calcium to blood cells.
The vertebrate endoskeleton is divided into two main categories: axial skeleton (includes skull, vertebral column, and ribs—absent in frogs) and appendicular skeleton (comprising the limbs and limb girdles).

Classification of Frogs

Frogs belong to the phylum Chordata and the subphylum Vertebrata.
They are classified under the class Amphibia.
The order of frogs is known as Anura, and they belong to the family Ranidae, with Rana as their genus.

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Description

Test your knowledge of the external anatomy of frogs with these informative flashcards. Learn about different species of frogs and the major regions that comprise their bodies, including the axial and appendicular regions. Perfect for biology students and amphibian enthusiasts!