Amphibian heart is...

Amphibian heart is

A

One-chambered

B

Three-chambered

C

Two-chambered

D

Four-chambered

Text Solution

Verified by Experts

The correct Answer is:

B

Amphibian heart is a three-chambered structure formed by two upper auricles and a single lower ventricle.

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Indicate whether the following statements are true of false : (a) Both auricles of amphibian heart open into the same ventricle. (b) Prawn's heart carries only oxygenated blood. (c ) Purkinje fibres are nerve fibres supplying the ventricular muscles. (d) The first heart sound results from a closure of semilunar valves. (e ) The vagus nerve reduces the heart rate. (f) The A-V node normally initiates the cardiac impulse. (g) Semilunar valves open during the ventricular diastole.

Which is not true about an amphibian heart ?

Knowledge Check

[A] : in amphibians heart is two chambered. [R]: The oxygenated blood is returned to the heart through sinus venosus.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Amphibians are

A

amninotes

B

anomniotes

C

homoeothermic

D

none tetrapod vertebrates.

Amphibian heart consists of -

A

Two auricles and one ventricle

B

One auricle and two ventricles

C

Two auricles and two ventricles

D

One sinus venosus, one auricle and 2 ventricles

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