Cardiac Muscle Vs Skeletal Muscle

The cardiac muscles are the muscle of the heart itself. The cardiac muscle is the tissue that makes

The Myocardium is made up of specialised cardiac muscle, only found in the heart and is not under voluntary control.

There are three main types of muscle tissue in the body: Skeletal muscle, smooth muscle and cardiac muscle. Firstly, skeletal muscle has a stripped appearance when it is examined under a microscope so it is sometimes known as striated/stripped muscle. Skeletal muscle is voluntary and this means that it is under conscious control. Secondly, there is smooth muscle which is an involuntary muscle that operates without any conscious control. This muscle is controlled by the nervous system. Smooth muscle can be found in the blood vessels and the walls of the digestive system and it helps to control digestion and blood pressure. Lastly, there is cardiac muscle which is located in in the wall of the heart. Cardiac muscle is involuntary and this means that it is not under conscious control. This is made up of a specialised type of tissue which is striated and it has its own blood supply. The contractions aid the pumping of blood through the blood vessels

These muscle tissue cells specialised to contract and move parts of the body. It is also capable of responding to stimuli. There are three types of muscle in the body such as: skeletal, cardiac and smooth. Each muscle is created of muscle fibers that are capable of contracting and returning back to original state-relaxation. Contraction causes movement of the skeleton, soft tissue, blood or specific material. Skeletal muscle is attached to the bones of the skeleton. Some facial muscles are attached to the skin. They have direct control over them through nervous impulses from our brain sending messages to the muscle. Contractions can vary to produce fast, powerful movements. These muscles also have the ability to stretch and contract to return to original shape. Cardiac muscles are found in the chambers of the heart such as the atria and ventricles. It is under the control of the automatic nervous system; however, even without nervous input contractions can occur. It is completely different to all the other muscles. Smooth muscles are also known as involuntary due to our inability to control its movement. This muscle is usually found in the walls of hollow organs

There are three types of muscle; skeletal (also known as striated), smooth, and cardiac. Skeletal muscles move the bones, cardiac muscle is found in the heart, and smooth muscles line the organs and blood vessels . Although different in function, the basic structure of each type is similar . The experiment for this investigation was conducted using skeletal muscle, as it is common and easy to access when fresh. Meats that were bought from the butcher were used as they are skeletal muscle.

Cardiac muscle-The cardiac muscle is the heart, it is responsible for pumping blood around the body. It is made up of cardiac muscle and is the only location in the body where such muscle is found, Unlike other muscles, cardiac muscle is almost completely reliant on oxygen to function, Cardiac muscle is an involuntary muscle that is present in the heart and helps to synchronize the beating of the organ.the cardaic muscle is very strong and it resiatnt fatigue, The cardiac muscle is found in the walls of the heart and is responsible for keeping the heart pumping.

The cardiac muscle consists of long branched fibres. Whereas, the brain tissue has spider web like structure. The cardiac muscle cell are made up of fibres. The function of cardiac muscle is to help the heart to pump blood. The function of brain tissue is to send messages to and from the brain. The cardiac muscle is present inside the heart. However, the brain tissue is located inside brain.

The heart is a very strong muscle that has one major job. The heart’s job is to pump blood throughout the entire body. The heart is made up of 4 chambers, and 4 valves. There is the right and left atrium, and a right and left ventricle. The atriums are the superior chambers, and the ventricles are inferior chambers. The left ventricle is the most important, because that is where the blood travels through to go to the aorta, and eventually the rest of the body (Taylor 2015).

Smooth muscles are found in the skin, internal organs, reproductive system, major blood vessels, and excretory system. Skeletal muscles are composed of long fibers surrounded by a membranous sheath, the sarcolemma. Since the Skeletal muscles are under control by whom ever they belong to are called voluntary muscles. This muscle is attached to two or more bones which are then attached to the skeleton by tendons. For example, head and neck muscles; contraction of these muscles produces facial expressions and head movements. They are also responsible for speech and swallowing. Skeletal muscles are the main muscles which move your body. Muscles nearly always work in coordinated groups; contraction of one muscle is accompanied by relaxation of another, while other muscles stabilize nearby joints. Then the last of the muscle types is the Cardiac Muscle or the involuntary muscles. Cardiac muscles are not under conscious control they do not react by a persons decision or movement. and are connected to the nervous system which are stimulated by autonomic impulses. Cardiac muscles are found in your internal organs like the heart or the intestine. For example; they include muscles that propel food through the intestine and those that control sweating and blood pressure.

The Body can’t sustain life if it didn’t have any heart tissue cells. A heart tissue cell helps the body and the cardiovascular system greatly. The heart tissue cell is part of the cardiovascular system and without them, the whole body system wouldn't work. The heart tissue cell is built like any other cell in the body but it connects to 3 or 4 other cells at the same time. The main purpose of the heart muscle is to pump blood to the entire body throughout an entire lifetime. Although, these cells can die and cause the others to work even harder.

Cardiac muscle is involuntary because the heart works all the time and never gets fatigued unlike skeletal muscle which is voluntary because it is used for body movement such as sitting, walking and lifting. Skeletal muscle differs from cardiac muscle as it is multinucleated compared with cardiac muscle that is uninucleated. This means skeletal muscle have more than one nucleus and cardiac muscle has one nucleus in the muscle cells. Also, cardiac muscle has semi-spindle shape-like cells compared to skeletal muscle which has cylindrical shaped-like cells. Cardiac muscle has a good blood supply in contrast to skeletal muscle that has well- supplied nerve and blood vessels. Furthermore, cardiac muscle has 3

8. What is the difference between the effective refractory period and the relative refractory period?

As well as the skeletal and cardiac muscle having many similarities, they also have differences. The main difference is the location of these two muscles. The cardiac muscle is found in the walls of the heart however the skeletal muscle is attached to the bone by tendons. This is because they have different functions. The skeletal muscle needs to be attached to the bones as its function is to produce movement of the body and the cardiac muscle is to pump blood around the body.

6. Automaticity – ability of heart to beat spontaneously and repetitively without external neurohormonal control. The heart is capable of beating outside the body, given proper laboratory conditions. Automaticity is evidently linked to fluid and electrolyte balance rather than to nervous system control.

The hearts role is to pump oxygenated blood to every cell in the body by having a continuous beat. Throughout time the heart has created mystery, however current technology has solved most of the mystery, there still remains an enchantment and eagerness to learn more.