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Zigmanuir [339]
3 years ago
13

Why the walls of atrium are thin? only about atrium thinner not than ventricles plz​

Biology
2 answers:
Basile [38]3 years ago
5 0

This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.

kvv77 [185]3 years ago
4 0

The walls of the atria are thinner because the atria doesn't need to pump blood to the whole body, it only needs to transport it to the ventricles.

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Please see details below

Explanation:

This question involves a single gene coding for muscle size in guinea pigs. The allele for giant muscles (G) is incompletely dominant over the allele for regular muscles (R). This means that a third intermediate phenotype (weak muscles) is produced in a heterozygous state.

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