Tissues

The human body as well as that of other animals (Species) is highly structured into organs and tissues which serve specific functions. Tissue is the organizational level intermediate between cells and organs system which compose the whole organism. All the tissues and cell types defined in an animal organism are hierarchical structured and shall be fully described. o

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  • name description synonyms
    dorsomedial column
    duodenum The first part of the small intestine extending from the pylorus to the jejunum [Brenda].
    epididymis A system of ductules emerging posteriorly from the testis that holds sperm during maturation and that forms a tangled mass before uniting into a single coiled duct which is continuous with the vas deferens [Brenda].
    external ear The outer ear is the external portion of the ear, which consists of the pinna, concha, and external auditory meatus. It gathers sound energy and focuses it on the eardrum (tympanic membrane). One consequence of the configuration of the external ear is to selectively boost the sound pressure 30- to 100-fold for frequencies around 3 kHz. This amplification makes humans most sensitive to frequencies in this range - and also explains why they are particularly prone to acoustical injury and hearing loss near this frequency. Most human speech sounds are also distributed in the bandwidth around 3 kHz [Wikipedia: http://en.wikipedia.org/wiki/Outer_ear].
    eyelid Either of the movable folds of skin and muscle that can be closed over the eyeball [Brenda].
    glia The delicate network of branched cells and fibers that supports the tissue of the central nervous system [Brenda].
    globe The globe of the eye, or bulbus oculi, is the eyeball apart from its appendages. A hollow structure, the bulbus oculi is composed of a wall enclosing a cavity filled with fluid with three coats: the Sclera, Choroid, and the Retina. Normally, the bulbus oculi is bulb-like structure. However, the bulbus oculi is not completely spherical. Its anterior surface, transparent and more curved, is known as the cornea of the bulbus oculi [Wikipedia: http://en.wikipedia.org/wiki/Globe_(human_eye)]. bulbus oculi
    glomerulus In the kidney, a tubular structure called the nephron filters blood to form urine. At the beginning of the nephron, the glomerulus is a network (tuft) of capillaries that performs the first step of filtering blood [Wikipedia: http://en.wikipedia.org/wiki/Glomerulus].
    grey matter Grey matter (or gray matter) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and unmyelinated axons), glial cells (astroglia and oligodendrocytes) and capillaries. Grey matter contains neural cell bodies, in contrast to white matter, which does not and mostly contains myelinated axon tracts. The color difference arises mainly from the whiteness of myelin. In living tissue, grey matter actually has a grey-brown color, which comes from capillary blood vessels and neuronal cell bodies [Wikipedia: http://en.wikipedia.org/wiki/Grey_matter].
    ileum The last division of the small intestine extending between the jejunum and large intestine [Brenda].
    intermediolateral column The intermediolateral nucleus (IML) is a region of gray matter found in Rexed lamina VII of the spinal column [Wikipedia: http://en.wikipedia.org/wiki/Intermediolateral_nucleus].
    intermediomedial column The term intermediomedial cell column refers to a cell column that occupies the medial portion of lamina VII along the central canal of the spinal cord (Anthoney-1994; Carpenter-1983) [BrainInfo: http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=1668]. intermediomedial cell column; intermediomedial nucleus; nucleus intermediomedialis
    internal ear The inner ear is the innermost part of the vertebrate ear. In mammals, it consists of the bony labyrinth, a hollow cavity in the temporal bone of the skull with a system of passages comprising two main functional parts: (1) The cochlea, dedicating to hearing; converting sound pressure impulses from the outer ear into electrical impulses which are passed on to the brain via the auditory nerve. (2) The vestibular system, dedicated to balance [Wikipedia: http://en.wikipedia.org/wiki/Inner_ear]. inner ear
    iris The circular pigmented membrane behind the cornea, perforated by the pupil; the most anterior portion of the vascular tunic of the eye, it is made up of a flat bar of circular muscular fibers surrounding the pupil, a thin layer of smooth muscle fibers by which the pupil is dilated, thus regulating the amount of light entering the eye, and posteriorly two layers of pigmented epithelial cells [Brenda].
    jejunum The section of the small intestine that comprises the first two fifths beyond the duodenum and that is larger, thicker-walled, and more vascular and has more circular folds than the ileum [Brenda].
    lacrimal gland The lacrimal glands are paired almond-shaped glands, one for each eye, that secrete the aqueous layer of the tear film. They are situated in the upper, outer portion of each orbit, in the lacrimal fossa of the orbit formed by the frontal bone. Inflammation of the lacrimal glands is called dacryoadenitis. The lacriminal gland produces tears which then flow into canals that lead to the lacriminal sac. From this sac, the tears drain through a passage into the nose [Wikipedia: http://en.wikipedia.org/wiki/Lacrimal_gland].
    lateral column In the thoracic region, the postero-lateral part of the anterior column projects lateralward as a triangular field, which is named the lateral column (lateral cornu, lateral horn) [Wikipedia: http://en.wikipedia.org/wiki/Lateral_horn_of_spinal_cord].
    left ventricle The ventricles are the two lower chambers of the heart. The left ventricle is the chamber that receives blood from the left atrium and pumps it out under high pressure to the body via the aorta [Brenda].
    lens A highly transparent biconvex lens-shaped or nearly spherical body in the eye that focuses light rays (as upon the retina) [Brenda].
    lumbosacral nucleus
    meninges The meninges (singular meninx from the Greek μῆνιγξ, "membrane") is the system of membranes which envelopes the central nervous system. In mammals, the meninges consist of three layers: the dura mater, the arachnoid mater, and the pia mater. The primary function of the meninges and of the cerebrospinal fluid is to protect the central nervous system [Wikipedia: http://en.wikipedia.org/wiki/Meninges].
    middle ear The cavity in the temporal bone comprising the cavitas tympani, adnexa mastoidea, and tuba auditiva [Brenda].
    milk A fluid secreted by the mammary glands of females for the nourishment of their young; especially: cow's milk used as a food by humans [Brenda].
    nephron A single excretory unit of the vertebrate kidney [Brenda].
    neuron A grayish or reddish granular cell with specialized processes that is the fundamental functional unit of nervous tissue [Brenda].

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