Circulatory system

Cardiac muscles _______ (c/o/n/t/c/r/t/a) and relax continuously in the heart?

Circulatory system is made up of the heart, ______ ______ and blood. 

Cardiac muscles contract and _______ (r/e/x/l/a) continuously in the heart?

Circulatory system is made up of the heart, blood vessels and ________. 

_____ vessels are tube-like structures which blood flow.

The heart pumps ________ to all parts of the body.

Blood carries (1) oxygen, (2) carbon dioxide, (3) water , (4) _______   _______ d/i/e/d/s/e/d    f/o/d/o, (5) waste materials.

The heart is a _________ organ. (v/t/i/l/a)

Blood carries (1) oxygen, (2) carbon dioxide, (3) water , (4) digested food, (5) ______ ______w/s/a//t/e m/a/t/e/r/a/i/l/s

Cardiac muscle contracts and relaxes continuously. The word "continuously" means _________

Blood carries (1) oxygen, (2) carbon dioxide, (3) ________ w/t/e/a/r , (4) digested food, (5) waste materials.

Circulatory system is made up of the _______, blood vessels and blood. 

Blood carries (1) _______ (o/e/x/y/g/n), (2) carbon dioxide, (3) water, (4) digested food, (5) waste materials.

Cardiac muscles contract and relax ______________( c/n/o/i/t/n/u/o/u/s/y/l) in the heart?

What type of muscle can find only in the heart?