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Frog Circulatory System Quiz

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Questions and Answers

What is the main change in circuitry in the frog's circulation?

The conversion of the sixth aortic arch into a pulmonary artery

The separation of oxygenated and deoxygenated blood not being completed

The elimination of gills reducing obstacles to blood flow

The shift from gill to lung breathing (correct)

How does blood move through the frog's heart?

Blood from the lung enters the left atrium

Blood from the body enters through the sinus venosus and right atrium

When the ventricle contracts, blood moves to the lungs or body

Both atria contract at the same time, driving blood into the ventricle (correct)

How do adult amphibians catch prey?

They use their front limbs to grab and immobilize prey

They catch prey with a tongue that is attached at the front of the mouth (correct)

They use a sticky secretion from their skin to trap prey

They use their teeth to hold prey without biting or chewing

What is the function of teeth in adult amphibians?

<p>To hold prey; they do not bite or chew</p> Signup and view all the answers

How does the short digestive tract of adult amphibians function?

<p>The short digestive tract produces enzymes for digesting fats, carbohydrates and proteins</p> Signup and view all the answers

Study Notes

Circulatory System of Frogs

The main change in circuitry in the frog's circulation is the separation of oxygenated and deoxygenated blood, which is a key adaptation for terrestrial life.

Heart Function and Blood Flow

Blood moves through the frog's heart in a dual circulation pathway, with oxygenated blood flowing from the lungs to the body and deoxygenated blood flowing from the body to the lungs.

Feeding Mechanisms in Adult Amphibians

Adult amphibians, such as frogs and toads, catch prey using their sticky tongues, which are rapidly extended and retracted to capture insects and other invertebrates.

Teeth Function in Adult Amphibians

Teeth in adult amphibians are not used for chewing or tearing food, but instead serve to grasp and hold onto prey, ensuring that it is not lost during the capture and swallowing process.

Digestive System of Adult Amphibians

The short digestive tract of adult amphibians functions to quickly absorb nutrients from food, which is made possible by the presence of a large surface area and a high enzymatic activity.

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Description

Test your knowledge of the frog circulatory system with this quiz. Learn about the unique features of frog circulation including the main changes in circuitry and the role of the heart in the process.