The blood enters the heart from the ___________ through the vena cava. It enters the _____________ _____________, travels through the _____________ ____________ and flows into the right ____________. • The muscle surrounding the right ventricle _____________, pushing blood through the ______________ _____________. • Blood then travels to the lungs through the ___________ ________. • Here it exchanges carbon dioxide for _____________. The blood then flows back to the heart through the ______________ ______ into the _______ _______. • Once the left atrium fills with blood, the ___________ ________ opens to allow blood into the ________ __________. • The left ventricle then contracts, pushing blood through the _____________ ___________ into the _____________. • From here, oxygen rich blood is circulated around the body, giving ________ and nutrients to cells.
The blood enters the heart from the ___________ through the vena cava. It enters the
_____________ _____________, travels through the _____________ ____________ and
flows into the right ____________.
• The muscle surrounding the right ventricle _____________, pushing blood through the
______________ _____________.
• Blood then travels to the lungs through the ___________ ________.
• Here it exchanges carbon dioxide for _____________. The blood then flows back to the
heart through the ______________ ______ into the _______ _______.
• Once the left atrium fills with blood, the ___________ ________ opens to allow blood into
the ________ __________.
• The left ventricle then contracts, pushing blood through the _____________ ___________
into the _____________.
• From here, oxygen rich blood is circulated around the body, giving ________ and nutrients
to cells.
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