Circulatory system :
Closed & single circulation is present in frog.
Function of circulatory system is to transport food, gases and hormones to various parts of the body. It consists
of following structures
Heart :
Three chambered, muscular myogenic heart is present in it which have 2 Auricles & 1 ventricle. Auricles receive the blood. Ventricle pumps the blood to the various parts of the body
Its heart rate is 64/min.
mice – 400-600/min
elephant – 25-28/min
tortoise – 8/min
Blue whale has the largest heart
Blood vessel : These are contractile tubes which distribute blood from the heart to the various parts of the body.
Blood : Three type of blood cells are present in it
(1) RBC – RBC are oval or biconvex in shape and nucleated. It contains haemoglobin which carry the oxygen.
(2) WBC – This cell provide protection or immunity.
(3) Thrombocytes : This cell prevent loss of blood by forming thrombus or clots on the bleeding site.
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1. What is the circulatory system of a frog? |
2. How many chambers does a frog's heart have? |
3. How does blood flow through the circulatory system of a frog? |
4. What is the role of blood vessels in the frog's circulatory system? |
5. How does the circulatory system of a frog support its survival? |
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