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A fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells.
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∙ 12y ago
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What are two major proteins in the sarcomere?
The two main filaments composing the sarcomere are action and myocin.
How could you detect if the muscle contracted?
ya muscles contracted due to actin and myocin protein comtracted
What are the proteins are involved in muscle contraction?
Actin and myosin
How does the muscle system work?
molecules called actin and myocin lie next to each other inside muscle cells. when triggered (usually by calcium ions) they shift electron bonds, thus shortening the length of the cell [max about 1/3 shorter] Work is done (using ATP) to restore the cell to its nornal length.
What is the tensile strength of human muscle tissue?
Skeletal muscles of the human have very high tensile strength. With act-in and myocin fibres sliding on each other, it gives very high power to the cells. Well trained athlete has got probably 1/8 to 1/4 strength, weight for weight, that of steel in there muscles.
How the change pulse rate helps maintain homeostasis in muscle cells?
When your heart rate is higher, oxygen is transferred faster to all parts of the body. Oxygen in the muscles stimulates oxidative phosphorylation, producing more energy in mitochondria from carbon molecules in glucose, etc. The energy (ATP) is used by myocin and act in binding sites to stimulate quicker and longer lasting muscle activity.
When calcium is released inside a muscle cell what does it bind to?
the molecule that binds is costraynim it is a very rare molecule and is very hard to find you can find it in volcanoes and in the sea the one that is found in the sea is much different than the one in the volcanoes but they both bind to calcium during muscle contraction the one in the sea has a circulating point which can be changed if it is riied with different nature such as land the one in the volcano is very hard to take out but it is possible it has to be cooled with nitrogen straight away for more than twenty four hours before any human being can touch it with their bare hands
How do muscle cells move?
the function of a muscle cell is, by definition, to move. this can be accomplished when the cell contracts. contracting makes it denser, which is why when you feel a relaxed muscle in your arm suddenly tense up, it hardens.A muscle cell expands and contracts in order to allow the human body to control the movement of it's limbs.
Compare and contrast in terms of structure and function the three different types of muscles found in the human body?
Well you only have 3 types of muscles in the human body. Cardiac, Skeletal and Smooth 1 Cardiac Muscle... with is only found in the heart. The specialized striated muscle tissue of the heart, the myocardium. Cardiac muscle is in some ways similar to skeletal and smooth muscle . For example, all three contract when a rise in calicum inside the muscle cell allows interaction between actin and myocin filaments. However, cardiac muscle has a unique structure, and differs in the way that contraction is initiated and regulated. 2.Skeletal Muscle... usually voluntary muscle made up of elongated, multinucleated, transversely striated muscle fibers, having principally bony attachments. Also called striated muscle. Skelekal muscles moves the skeleton and is responsible for all our voluntary movements, as well as for the automatic movements required, for example, to stand, to hold up our head, and to breathe. 2. Smooth Muscles... Muscle tissue that contracts without conscious control, having the form of thin layers or sheets made up of spindle-shaped, unstriated cells with single nuclei and found in the walls of the internal organs, such as the stomach, intestine, bladder, and blood vessels, EXCLUDING out side the heart. The cardiovascular, gastrointestinal, genitourinary, and respiratory systems are composed mostly of hollow organs (tubular or sacular), which transport and/or store fluids (either liquids or gases) within the body. The walls of these organs contain smooth muscle, a type of tissue which enables them to constrict or dilate, in this way retarding or facilitating fluid movement as required. This is accomplished by the shortening or lengthening of the individual smooth muscle cells, which occurs in a co-ordinated fashion because the cells are electrically coupled by intercellular connections, known as gap junctions. Other structures in the body that contain smooth muscle include the myometrium - the muscular wall of the uterus - which is responsible for the rhythmic contractions of Labor, the piloerector muscles, which cause skin hair to stand up; and the irises, which control the diameter of the pupils.
