Answer:
The right answer is intercalated discs.
Explanation:
If you observe cardiac muscles under a microscope, the first feature that appears is Intercalated discs. Cardiac muscles contains heart muscle cells which are called as cardiomyocytes which are linked by these discs to perform a single functional organ.
Intercalated discs helps in harmonizing the contraction of cardiac tissues.
Answer:
C) Most of the light from Polaris is absorbed by different objects in space
Exercise performance begins to decline once water loss exceeds 2% of an individual's body mass.
The answer would be the muscle fiber because it's the small part of the contracting unit.
