What are the 2 types of muscle functions?
Muscle Types
- Skeletal muscle, attached to bones, is responsible for skeletal movements.
- Smooth muscle, found in the walls of the hollow internal organs such as blood vessels, the gastrointestinal tract, bladder, and uterus, is under control of the autonomic nervous system.
What are the 2 things that muscles do to create movement?
Muscles provide the tug on the bones needed to bend, straighten, and support joints. Muscles can pull on bones, but they can’t push them back to their original position, so the muscles work in pairs of flexors and extensors. The extensor muscle relaxes and stretches as the flexor muscle contracts to bend the joint.
What is the development of muscle?
Myogenesis is the formation of muscular tissue, particularly during embryonic development. Muscle fibers form from the fusion of myoblasts into multi-nucleated fibers called myotubes. In early embryonic development, these myoblasts proliferate if enough fibroblast growth factor (FGF) is present.
What are the two muscle components?
Skeletal muscles are voluntary muscles under the control of the somatic nervous system. The other types of muscle are cardiac muscle which is also striated and smooth muscle which is non-striated; both of these types of muscle tissue are classified as involuntary, or, under the control of the autonomic nervous system.
How are myoblasts used in the development of muscle?
In the presence of fibroblast growth factor, myoblasts fuse into multi-nucleated mytotubes, which form the basis of muscle tissue. Unused myoblasts dedifferentiate into myosatellite cells, which remain in the muscle fiber until needed to differentiate into new muscle cells when a muscle is damaged or stressed.
When does muscle growth occur for client education?
However, for client education some important applications need to be summarized. Muscle growth occurs whenever the rate of muscle protein synthesis is greater than the rate of muscle protein breakdown. Both, the synthesis and breakdown of proteins are controlled by complimentary cellular mechanisms.
What happens in the third stage of muscle development?
The third stage is the actual cell fusion itself. In this stage, calcium ions are critical for development. Myocyte enhance factors (MEFs) promote myogenesis. Serum response factor (SRF) plays a central role during myogenesis, required for the expression of striated alpha-actin genes.
Where does muscle tissue develop in the human body?
Mesoderm: The embryonic layer from which muscle tissues develop, including cardiac muscle, skeletal muscles cells, tubule cell of the kidney, red blood cells, and smooth muscle in gut. Myoblasts that do not form muscle fibers dedifferentiate back into satellite (myosatellite) cells.