Question

what is cardiac muscles and its features​

Answer 1

Answer:

Cardiac muscle tissue is only found in the heart. Highly coordinated contractions of cardiac muscle pump blood into the vessels of the circulatory system. Similar to skeletal muscle, cardiac muscle is striated and organized into sarcomeres, possessing the same banding organization as skeletal muscle

Explanation:

However, cardiac muscle fibers are shorter than skeletal muscle fibers and usually contain only one nucleus, which is located in the central region of the cell. Cardiac muscle fibers also possess many mitochondria and myoglobin, as ATP is produced primarily through aerobic metabolism. Cardiac muscle fibers cells also are extensively branched and are connected to one another at their ends by intercalated discs. An intercalated disc allows the cardiac muscle cells to contract in a wave-like pattern so that the heart can work as a pump.

Answer 2

Answer:

Cardiac muscles are specialised muscles that are present in heart. Cardiac muscles show continuous contraction and relaxation without any rest in a person's lifetime.This contraction and simultaneous relaxation is result of an electrical impulse which originates in the S.A. NODE, located in the upper right corner of the right auricle. During heart attack, a part of cardiac muscles die and cause a permanent damage to the heart. This happens when oxygenated blood fails to reach this part of cardiac muscles.