Activity 4: Microscopic Anatomy of Cardiac Muscle and Examining Cardiac Muscle Tissue Anatomy
When the heart contracts, what happens to the size of the internal chambers?
They get smaller.
When the heart contracts, and the internal chambers become smaller, what happens to the blood?
It is forced into the large arteries leaving the heart.
In cardiac muscle cells, the cells interdigitate at which sites?
At the intercalated discs