Skeletal muscles
Skeletal muscles are organs of the vertebrate muscular A structure that is often attached to the bones of the skeleton by tendons. The muscle cells of skeletal muscle are much longer than other types of muscle tissue and are often referred to as muscle fibers. Skeletal muscles help people move and perform daily physical activities. They play an important role in respiratory dynamics and help maintain balance and posture. They also protect important organs in the body. Skeletal muscles stabilize bones and joints, maintain posture, generate heat, and control internal movement.
Heart muscle
Cardiac muscle also called myocardium or heart muscle is one of three types of vertebrate muscle tissue. It forms the main tissue of the heart wall. It is an involuntary and striated muscle. The heart muscle helps to pump blood through the body. It makes coordinated contractions, which allow your heart to pump blood through your circulatory system.
What is the difference between heart muscle and scalatel muscle?
The main difference between cardiac muscle (cardiac muscle) and skeletal muscle lies in their respective locations, structures, functions and control mechanisms. Cardiac muscle is located individually in the heart, has a nucleus in each of the branched, interconnected cells, and acts spontaneously, contracting rhythmically to pump blood throughout the circulatory system when controlled by the cardiac conduction system. In contrast, skeletal muscles are distributed throughout the body, composed of long, multinucleated fibers organized in parallel bundles, and are under voluntary control, enabling sensory movements such as walking, running, and lifting objects. Nervous System.
| Characteristic | Skeletal Muscle | Cardiac Muscle |
|---|---|---|
| Location | Present in all parts of the body anchored to the bones by tendons | Present in the heart wall of vertebrates |
| Cells | Multinucleated, long tube-shaped, align with nearby cells | Single nuclei, long, branching cells aligned with nearby cells |
| Fibers | Cylindrical long fibers and not branched | Branched fibers |
| Striated Muscles | Yes | Yes |
| Nuclei Location | Periphery of cell | Center of the cell |
| Transverse Tubules (T-Tubules) | Part of triads at A-1 junction | Part of dyads at z disk |
| Sarcoplasmic Reticulum | Abundant with two terminal cisterns in the triads | Less abundant with one terminal cistern per sarcomere in dyads |
| Distinctive Structural Features | Highly organized sarcomeres and triads | Intercalated discs with adhesion and gap junctions |
| Connective Tissue | Endomysium, perimysium, and epimysium | Endomysium, subendocardial, and subpericardial |
| Major Function | Maintain posture, stabilize bones and joints, control internal movement, and generate heat | Help pump blood through the body and maintain blood pressure |
| Innervation | Motor or voluntary movement | Autonomic for involuntary pumping of blood |
| Movement Control | Under conscious control | Not under conscious control |
| ATPase | A moderate amount of ATPase | Abundant ATPase |
| Self-Regulation | Yes | No |
| Relaxation | Occurs when nerve stimulation is stopped | The process by which the heart muscle returns to its initial state of load and length after contraction |
