Answer:

2.muscle that make up the heart.

A.cardiac

B.ribs

C.skull

D.spinal columm

3.this organ protects the spinal cord.What is it?

A.bone marrow

B.ribs

C.skull

D.spinal columm

4. they are the muscles which have complete control and responsible for all kinds of body movement.

A.contracting

B.involuntary

C.relaxing

D.voluntary

5.what system that is made up of many bones joined to form a structure.

A.digestive

B.integumentary

C.muacular

D.skeletal

Explanation:

hope it helps

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