Skeletal Muscle:
Skeletal muscle makes up approximately 40 percent of a humans total body weight, and contains 50-75 percent of all body proteins, accounting for 30-50 percent of whole body protein turnover (Frontera and Ochala 2015). It contributes significantly to multiple bodily functions both mechanically and metabolically. In terms of our study its main function is to convert chemical energy into mechanical energy allowing individuals to generate force and power, and produce repetitive high speed intermittent movements within sports such as Gaelic Football.
The architecture of skeletal muscle is characterized by a specific and detailed arrangement of muscle fibres, also known as muscle cells or myofibers. Muscle fibres are the mechanically active component of skeletal muscle tissue, making up approximately 80-90 percent of its volume. The remaining volume is made up of intramuscular connective tissue. The intramuscular connective tissue is predominantly made up of collagen, the major structural protein in skeletal muscle (Gillies and Lieber 2011) and ensures an organisation of muscle fibres into fascicles while also contributing importantly to force production (Kjaer 2004).
There are three separated layers of connective tissue found in skeletal muscle. The outer layer that …show more content…
Myofibrils are threadlike elongated structures found in striated muscle cells that contain these contractile proteins. It is believed that each muscle fibre is made up of thousands of myofibril containing billions of myofilaments (Frontera and Ochala 2015). The building block of these myofibrils is the sarcomeres which are the basic contractile units of skeletal muscle. They are made up of actin and myosin filaments that are divided by a thin sheet of structural proteins called the Z band/ Disk. (Book
Skeletal muscle makes up approximately 40 percent of a humans total body weight, and contains 50-75 percent of all body proteins, accounting for 30-50 percent of whole body protein turnover (Frontera and Ochala 2015). It contributes significantly to multiple bodily functions both mechanically and metabolically. In terms of our study its main function is to convert chemical energy into mechanical energy allowing individuals to generate force and power, and produce repetitive high speed intermittent movements within sports such as Gaelic Football.
The architecture of skeletal muscle is characterized by a specific and detailed arrangement of muscle fibres, also known as muscle cells or myofibers. Muscle fibres are the mechanically active component of skeletal muscle tissue, making up approximately 80-90 percent of its volume. The remaining volume is made up of intramuscular connective tissue. The intramuscular connective tissue is predominantly made up of collagen, the major structural protein in skeletal muscle (Gillies and Lieber 2011) and ensures an organisation of muscle fibres into fascicles while also contributing importantly to force production (Kjaer 2004).
There are three separated layers of connective tissue found in skeletal muscle. The outer layer that …show more content…
Myofibrils are threadlike elongated structures found in striated muscle cells that contain these contractile proteins. It is believed that each muscle fibre is made up of thousands of myofibril containing billions of myofilaments (Frontera and Ochala 2015). The building block of these myofibrils is the sarcomeres which are the basic contractile units of skeletal muscle. They are made up of actin and myosin filaments that are divided by a thin sheet of structural proteins called the Z band/ Disk. (Book