Answer the following

(a) Name the major site where RBCs are formed.
(b) Which part of the heart is responsible for initiating and maintaining its rhythmic activity?
(c) What is specific in the heart of crocodiles among reptilians?

Answers (1)

(a) In adults- bone marrow and in embryos-liver.

(b) Sino-Atrial Node

(c) Most of the reptiles have three-chambered hearts, but crocodiles have four-chambered hearts

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