Cardiac Muscle And Skeletal Muscle

Muscles

Does the word “muscle” conjure up images of a weightlifter’s biceps, such as the one shown above? The muscles that move the body, such as the biceps, are simple to feel and see, but they aren’t the only ones in the human body. Many of the body’s muscles are located deep within the body. Internal organs such as the heart and stomach have walls made of them. You can flex your biceps like a bodybuilder, but you have no control over your inside muscles. Because movement of these muscles is important for survival, it’s a good thing they work on their own without any conscious effort on your part.

Muscles and Their Working Principle

The muscular system is made up of all of the body’s muscles. Muscles are organs made up primarily of muscle cells, also known as muscle fibers. Each muscle fiber is a long, thin cell that is capable of performing tasks that no other cell can. It has the ability to shorten or contract. Muscle contractions are responsible for almost all of the body’s movements, both within and outside. In the human body, there are three types of muscle tissues: cardiac, smooth, and skeletal muscle tissues. 

Muscle Tissue Types

Muscle Tissue Types. Because their cells are arranged in bundles, both skeletal and cardiac muscles seem striated, or striped. Smooth muscles do not have striated cells because they are arranged in sheets rather than bundles.

Smooth Muscle 

Smooth muscle makes up the walls of internal organs including the stomach and intestines. Smooth muscular contractions assist the organs in performing their duties. When smooth muscle in the stomach contracts, for example, it squeezes the food inside the stomach, breaking it down into smaller bits. Smooth muscle contractions are uncontrollable. This suggests they aren’t in charge of themselves.

Skeletal Muscles 

Skeletal muscle is muscle tissue that is linked to a bone. Skeletal muscle is used whether you are blinking your eyes or running a marathon. Skeletal muscle contractions are voluntary, or under conscious control. Bones move as skeletal muscle contracts. The most frequent form of muscle in the human body is skeletal muscle.

Cardiac Muscle

Cardiac muscle is solely located in the heart’s walls. The heart beats and pumps blood when cardiac muscle contracts. Mitochondria, which produce ATP for energy, are abundant in cardiac muscle. This aids in the heart’s resistance to exhaustion. The contractions of cardiac muscle, like those of smooth muscle, are involuntary. Cardiac muscle is striated, or striped, like skeletal muscle, because it is organised in bundles.

Difference Between Cardiac Muscle And Skeletal Muscle

 One of the most noticeable differences is that cardiac muscles are automatically controlled muscles are automatically controlled, whereas skeletal muscle movements are controlled by the somatic nervous system.

The shapes of cardiac and skeletal muscles are also distinct. The cardiac muscles are semi-spindle in shape, whereas the skeletal muscles are cylindrical. Another distinction is that cardiac muscles are smaller than skeletal muscles.

The tendons connect the skeletal muscles to the bone. Myoblasts, which generate muscle fibers, are also seen in skeletal muscles. The cardiac muscles can be observed in the heart’s myocardium. Intercalated discs and T-tubules connect the myocyte to the syncytium in the cardiac muscles.

When opposed to cardiac muscles, skeletal muscles are more closely joined together. Gap junctions are found in cardiac muscles, unlike skeletal muscles. In skeletal muscles, there are no gap junctions and simply a shared contraction known as syncytium.

The cardiac muscles have one or two nuclei when the skeletal muscles are multinucleated. When it comes to endomysium and mitochondria, cardiac muscles are more dense than skeletal muscles. Furthermore, cardiac muscle mitochondria contain larger blood vessels. Mitochondria occupy around 25% of the space in cardiac muscles, but they only occupy 2% of the space in skeletal muscles. The skeletal muscles have more T-tubules than the cardiac muscles when it comes to T-tubules. In addition, the T-tubules in cardiac muscles are larger.

Conclusion 

We conclude following points which are as follows-:

• Cardiac muscles are governed involuntarily, whereas skeletal muscle action is controlled by the somatic nervous system.
• Skeletal muscles are cylindrical in shape, whereas cardiac muscles are semi-spindle.
• Skeletal muscles are more closely bound together than cardiac muscles.
• Cardiac muscles are much smaller than skeletal muscles.
• The cardiac muscles have one or two nuclei when the skeletal muscles are multinucleated. When it comes to endomysium and mitochondria, cardiac muscles are more dense than skeletal muscles.
• The skeletal muscles have more T-tubules than the cardiac muscles when it comes to T-tubules. In addition, the T-tubules in cardiac muscles are larger.
• Gap junctions are found in cardiac muscles, unlike skeletal muscles. In skeletal muscles, there is only one type of contraction termed as syncytium.