Question

All of the structures below are components of the cardiovascular system. In the hierarchy or organization,...

All of the structures below are components of the cardiovascular system. In the hierarchy or organization, which of these structures is the LEAST complex?

  mitochondria

  cardiac muscle tissue

  contractile proteins (myosin, actin)

  the heart

  cardiac muscle cell

Science   Anatomy-And-Physiology   
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Answer #1

Ans- Mitochondria

According to the hierarchy or organisation there are levels of organisations. These are from simple to complex- organelle, cells, tissues, organ, organ system, organism, population, community, ecosystem and biosphere. Therefore, organelle being the most simple or least complex. Here, mitochondria is the organelle being the least complex. Cardiac muscle tissue is the tissue of heart , contractile proteins are arrangement of cells, heart is the pumping organ of the body and cardiac muscle cell is the basic cell of the heart.

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