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First image:cardiac muscle cell.
Second image: elastic cartilage.
Third image: Pseudo-stratified Columnar Epithelium.
Fourth image: cilia.
Cardiac muscle, a kind of striated, involuntary muscle found solely in the heart, is what allows the heart to pump blood.
Cardiac muscle cells are found in the heart's walls, where they may be seen as being striped (or striated) and controlled by an involuntary process.
Cells in cardiac muscle tissue, or the myocardium, respond to electrical signals from the nervous system by contracting and expanding. Together, these cardiac cells create the wavelike, rhythmic contractions that make up the heartbeat.
Part A:
In the first image, the highlighted structure is cardiac muscle cell.
The cartilage type in the second image is elastic cartilage.
In the third image, the epithelium indicated by the arrows are pseudo-stratified Columnar Epithelium .
In the fourth image the highlighted structures are cilia.
To know more about cardiac muscle cells refer to:
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