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Muscle in Biological Definition

Actin

... contraction of the cell during cytokinesis . In muscle cells they play an essential role, along with myosin , in muscle contraction . In the cytosol , actin is ... Muscular Contraction Main article: muscle contraction Together with myosin filaments ...

Biomechanics

... of the bones 5 Biomechanics of the muscle 6 Viscoelasticity 7 Nonlinear Theories ... ε k l Biomechanics of the muscle There are three main types of muscles: Skeletal muscle (striated) Unlike cardiac muscle, ...

Brain

... , the brain has several parallel systems of muscle control. The motor system controls voluntary muscle movement, aided by feedback loops in the ... Nuclei in the brainstem control many involuntary muscle functions such as heartrate and breathing. ...

Diabetes mellitus

... uptake of glucose into cells (primarily muscle and fat cells) from the blood, deficiency of ... unit) to glycogen for storage in liver and muscle cells. Lowered insulin levels result in the ... levels fall -- though only in the liver not muscle tissue. Higher insulin level increase many ...

Insulin

... lack of insulin inhibits absorption arterial muscle tone – forces arterial wall muscle to relax, increasing blood flow, especially in ... the stimulation of glucose uptake is concerned: muscle cells ( myocytes ) and fat cells ( adipocytes ). ...

Actin

... contraction of the cell during cytokinesis . In muscle cells they play an essential role, along with myosin , in muscle contraction . In the cytosol , actin is ... Muscular Contraction Main article: muscle contraction Together with myosin filaments ...

Muscle

... muscle is a contractile form of tissue . It is one ... , connective tissue and nervous tissue . muscle contraction is used to move parts of the body , ... 5.2 Disease 6 The strongest human muscle 7 External links 8 See also ...

Myosin

... Myosin is a motor protein filament found in muscle tissue . Together with actin filaments, myosin provides the mechanism for muscle contraction , utilizing energy from ATP . The ... transduction process are still not known. The muscle is composed of ...

Protein

... having molecular masses of up to 3,000,000 (the muscle protein titin has a single amino acid chain ... that should be black becomes reddish), loss of muscle mass (proteins repair muscle tissue), low body temperature, and hormonal ...

Signal transduction

... reticulum ( sarcoplasmic reticulum in muscle cells), where it is bound to molecules like ... . It is especially important in neurons and muscle cells . In heart and pancreas cells, another ... is used in a multitude of processes, among them muscle contraction, release of neurotransmitter from ...

Stem cell

... injection restores ability to walk 3.2.3 muscle damage 3.2.4 Human hearts repaired using ... to be able to transform into liver , nerve , muscle , hair follicle and kidney cells. Adult stem ... many types of tissue, including neurons , smooth muscle cells and fat-cells. These were found in the ...

Anabolism

... processes include growth and mineralization of bone and increase of muscle mass. Catabolic processes involve "breaking down" organs and tissues. ... stress and illness. Examples of catabolic processes include breakdown of muscle protein in order to use amino acids as substrates for gluconeogenesis ...

Biological tissue

... holds everything together. Blood is considered a connective tissue. muscle tissue - muscle cells contain contractile filaments that move past each other and change ...

Anabolism

... processes include growth and mineralization of bone and increase of muscle mass. Catabolic processes involve "breaking down" organs and tissues. ... stress and illness. Examples of catabolic processes include breakdown of muscle protein in order to use amino acids as substrates for gluconeogenesis ...

Cell growth

... to form syncytia . For example, very long (several inches) skeletal muscle cells are formed by fusion of thousands of myocytes . Genetic studies of ... several genes that are required for the formation of multinucleated muscle cells by fusion of myocyes. Some of the key proteins are important for ...

Eye

... substance called the vitreous humour , with a focusing lens and often a muscle called the iris that controls how much light enters. Although they are ... Anterior chamber Blind spot Canal of Schlemm Ciliary muscle (or body) Cornea Conjunctiva Choroid Fovea Iris ...

Skin

... of structures including blood vessels, nerves, hair follicles, smooth muscle , glands and lymphatic tissue . It is made up of dense connective ... the dermis. Its purpose is to attach the skin to underlying bone and muscle as well as supplying it with blood vessels and nerves. It is made up of ...

Thermoregulation

... metabolism ( catabolism ) is going on, heat is being set free. When a muscle does work it also gives rise to heat, and if this is estimated it can be ... survive a temperature of 45 C (113 F) or above for very long. Mammalian muscle becomes rigid with heat rigor at about 50 C., and obviously should this ...

Albinism

... vision often improves towards middle age , when most "normally" sighted individuals begin to suffer long- or short-sightedness, due to changes in muscle tension. Individuals with these conditions may be helped by the use of glasses and low-visual aids such as magnifiers, as well as bright but angled ...

Anton van Leeuwenhoek

... and his contributions towards the establishment of cell biology . Using his handcrafted microscope he was the first to observe and describe muscle fibres, bacteria , spermatozoa and blood flow in capillaries (small blood vessels ). His name at birth was Thonis Philipszoon . His ...

Avian influenza

... Symptoms In humans, it has been found that avian flu causes similar symptoms to other types of flu: fever cough sore throat muscle aches conjunctivitis in severe cases of avian flu, it can cause severe breathing problems and pneumonia , and can be fatal. Taken from: ...

Barbiturate

... Other non-therapeutical use Barbiturates in high doses are used for physician-assisted suicide (PAS), and, in combination with a muscle relaxant , for euthanasia and for capital punishment by lethal injection . References Text partially derived from public domain text ...

Bone

... under stress. Bones can be connected to muscles via tendons and other bones by ligaments . The science of the interaction of bone and muscle is called biomechanics . The science of bones is called osteology . Some illnesses afflict human bones, for example osteoporosis and cancer . ...

Biophysics

... animal locomotion cellular biophysics channels , receptors and transporters electrophysiology membranes bioenergetics muscle and contractility nucleic acids photobiophysics and biophotonics proteins supramolecular assemblies spectroscopy , imaging ...

Cancer

... is a cancer originating in lymphatic tissue . Melanoma arises in melanocytes . Sarcoma begins in the connective tissue of bone or muscle . Teratoma begins within germ cells . Adult cancers Adult cancers is usually formed in epithelial tissues and are believed often to be the ...

Chromosome

... retardation and mental defect. Down syndrome (extra chromosome 21). This is also known as mongolism or trisomy 21 . Symptoms are decreased muscle tone, asymmetrical skull, slanting eyes and mental retardation. Edward's syndrome is the second most common trisomy after Down's Syndrome. It is ...

Depolarization

... channels are closed. Compare to hyperpolarization . Depolarization of membrane potentials is important for other cell types, particularly muscle cells. Related topics membrane potential action potential ...

Endoplasmic reticulum

... Disulfide bonds stabilize the tertiary and quaternary structure of many proteins. Sarcoplasmic reticulum. The endoplasmic reticulum found in muscle fibers is called sarcoplasmic reticulum . ...

Warm-blooded

... , lick, or seek shelter or water. Diverse mechanisms can come into play to regulate body temperature, such as shivering (to generate heat from muscle contractions), blanching (circulatory changes to direct less heat to the skin), flushing (circulatory changes to radiate more heat from the skin), ...

Enzyme

... literally starve for oxygen even with an abundance of oxygen without the action of the enzyme, cytochrome oxidase. Enzymes are also necessary for muscle contraction and relaxation. The fact is, without both of these classes of enzymes, (digestive and metabolic) life could not exist. Enzyme ...

Gene therapy

... the virus and the cells that have been successfully treated with it. Several trials with AAV are on-going or in preparation, mainly trying to treat muscle and eye diseases, the two tissues where the virus seems particularly useful. Problems and ethics For the safety of gene therapy, the ...

Glucose

... as D -glyceraldehyde. Synthesis The product of photosynthesis in plants and some prokaryotes . Formed in the liver and skeletal muscle by the breakdown of glycogen stores (glucose polymers ). Synthesized in liver and kidneys from intermediates by a process known as ...

Glycolysis

... more closely connected to aerobic metabolism occur). Glucose gets into the cell through facilitated diffusion . In some tissues, skeletal muscle for instance, insulin stimulates this process. Follow up The ultimate fate of the pyruvate and NADH produced in glycolysis depends upon ...

Intermediate filament

... these heterodimers can then associate to make a keratin filament. Type III IFs Desmin IFs are structural components of the sarcomeres in muscle cells. Vimentin IFs can be found in fibroblasts and endothelial cells , they support the cell membrane and keep some organelles in a fixed ...

Lung

... surface area of the lung itself. The lungs of humans are typical of this type of lung. Breathing is largely driven by the diaphragm below, a muscle that by contracting expands the cavity in which the lung is enclosed. The rib cage itself is also able to expand and contract to some degree. As a ...

Memory

... Long-term potentiation Hebbian learning The Memory-Prediction Framework- An Acclaimed Unifying Theory of Memory Mnemonic muscle memory or proprioception : the sense and memory of where parts of our body are in space External links Memory Exercises , a memory wiki ...

Nutrition

... for the organism’s normal functioning. These are: Adequate energy levels Maintaining proper body structures and processes, e.g. muscle function, immune protection, bone density and strength Repair and development of all of the organism’s systems. In the case of humans, ...

Patau syndrome

... associated with severe mental retardation , small eyes that may exhibit a split in the iris ( coloboma ), a cleft lip and/or palate , weak muscle tone (hypotonia), an increased risk of heart defects, skeletal abnormalities, and other medical problems. Affected individuals rarely live past ...

Prion

... been speculatively linked to memory [2] and cellular differentiation , the process by which stem cells take on specialized functions (such as muscle or blood cells). Yeast Prions In 1965 , Brian Cox, a geneticist working with the yeast Saccharomyces cerevisiae , described a genetic ...

Endoplasmic reticulum

... Disulfide bonds stabilize the tertiary and quaternary structure of many proteins. Sarcoplasmic reticulum. The endoplasmic reticulum found in muscle fibers is called sarcoplasmic reticulum . ...
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