fibers in Biological Definition

Cartilage

... 1 Composition 1.1 Cells 1.2 fibers 1.3 Matrix 2 Types of Cartilage ... tissue, cartilage is composed of cells , fibers and a matrix. Cells Chondrocytes are ... live tissue, they occupy the entire area. fibers Cartilage is composed of collagen and elastic ...

Muscle

... muscles and the striated muscles include: the fibers of the smooth muscles are not arranged regularly ... (at the cost of quicker fatiguability). Type II fibers are used when a task requires more than 25% of your strength. Type II fibers are further divided into two sub-categories : ...

Axon

... the human body, for example, are those of the sciatic nerve , which run from the base of the spine to the big toe of each foot. These single-cell fibers may extend a metre or even longer. In vertebrates generally, the axons of many neurons are sheathed in myelin , which is formed by either of ...

Biodiversity

... is estimated that of the 250,000 known plant species, only 5,000 have been researched for possible medical applications. Industry : for example fibers for clothing , wood for shelter and warmth. Biodiversity may be a source of energy (such as biomass ). Other industrial products are oils , ...

Biomechanics

... attributed to the various proteins , such as elastin and collagen , living cells, ground substances such as proteoglycans, and the orientations of fibers within the tissue. For example, if human skin were largely composed of a protein other than collagen , many of its mechanical properties, such ...

Brain

... matter refers to axons and their surrounding myelin insulation, which gives this tissue its white color. White matter is found in bundles of fibers known as tracts which connect the different parts of the brain. In modern species most closely related to the first vertebrates, brains are covered ...

Cancer

... exposure to radiation , particularly ultraviolet radiation from the sun , leads to melanoma and other skin malignancies. Breathing asbestos fibers is associated with mesothelioma . In more general terms, chemicals called carcinogens and free radicals are known to cause mutations. Chronic ...

Centromere

... The centromere is a region of a eukaryotic chromosome where the kinetochore is assembled. Thus, it is the site where spindle fibers of the mitotic spindle attach to the chromosome during mitosis . It is also the site of the primary constriction visible in microscopy images of ...

Endoplasmic reticulum

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

Eye

... Pupil Rectus medialis Retina Sclera Suspensory ligament Tapetum lucidum (not in humans) Vitreous humour Zonular fibers Eye Related Problems Achromatopsia Age-related macular degeneration Aniridia Amblyopia Anisometropia Arc eye ...

Magnetic resonance imaging

... we can make the assumption that this corresponds to a set of fibers. Diffusion MRI for this application is still at the research stage. Identifying fibers on diffusion MRI is called tractography. Magnetic resonance angiography Magnetic resonance angiography (MRA) is used to generate pictures of ...

Nervous system

... in nourishment and structural support. Rapid signalling within the nervous system occurs by two primary mechanisms: Within neuronal nerve fibers by way of action potentials Between neurons by way of neurotransmitter diffusion across synapses . Vertebrate nervous systems The ...

Prion

... proteins do not resemble the prion proteins of yeast in their amino acid sequence. Nonetheless, the basic structural features (formation of amyloid fibers and a highly specific barrier to transmission between species) are shared between mammalian and yeast prions. The prion variant responsible for mad ...

Endoplasmic reticulum

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

Endoplasmic reticulum

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

Endoplasmic reticulum

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

Starch

... it gave to clothing, it served a practical purpose as well. Dirt and sweat from a person's neck and wrists would stick to the starch rather than fibers of the clothing, and would easily wash away along with the starch. Then, after each laundering, the starch would be reapplied. Livestock ...