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White Blood Cells Connective Tissue
3,064 words... site Connective tissues have three main elements: ground substance, fibers, & cells. Ground substances make up the extracellular matrix. (Note: that the term matrix indicates the ground substance. ) Ground Substance - is an amorphous (unstructured) material that fills the space between the cells & contains the fibers. It is composed of interstitial fluid, cell adhesion proteins, & proteoglycans. Cell adhesion proteins, a group that includes fibronectin & lamina, sever mainly as a connective ...
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One Of The Most Common Back Pain
521 wordsBackache is one of the most common of all diseases - and probably the most disabling. Between one-half and three-quarters of British adults suffer from it. In any two week period between one-quarter and one-third of all adults get some back pain. Among 30 -, 40 - and 50 -year olds backache is so common as to be more normal than abnormal. The pain and the personal agony caused by all this backache is phenomenal but impossible to estimate in any measurable terms, and over the years doctors have ma...
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Hind Limbs Cervical Vertebrae Cetaceans
803 wordsThere Cetaceans And Evolution Cetaceans There are many forms of cetacean life living in the worlds waters. How an why they came into existence is uncertain, but there have been many theories. Some say that dolphins are aquatic forms of goats, and others believe they evolved just like everything else, from a single cell, and not from an actual multi-cellular being. Because most cetaceans have some vestigial structures such as under-developed os coxae, the former of these two theories remains prev...
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Body Size June 25
1,956 wordsAs promised, here are the derived characters with which Gauthier (in his 1986 paper) unites Archaeopteryx with modern birds, outside of all other theropods (with Gauthiers original clarifier's in parens) [and with my editorial comments in brackets]: Premaxilla e elongate, narrow, and more pointed anteriorly, with longer nasal processes [similar condition in bullatosaurs, and in the non dinosaurian Megalancosaurus, but unique to Archie and later birds in Maniraptora]. Maxillary process of premaxi...
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Spinal Cord Spinal Injuries
454 wordsSpinal injuries are a very serious, and even life-threatening, problem facing almost everyone at some point in there lives. If a broken vertebra pinches a spinal nerve, paralysis may result. The spine is a column of vertebrae stacked one on the next from the skull s base to the tail bone. Each vertebra is hollow through the center where the spinal cord runs through. There are some signs and symptoms that you should check for if you suspect spinal injury on an injured person. Head injuries may in...
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Spinal Injuries Spinal Cord
456 wordsSpinal Injuries Spinal injuries are a very serious, and even life-threatening, problem facing almost everyone at some point in there lives. If a broken vertebra pinches a spinal nerve, paralysis may result. The spine is a column of vertebrae stacked one on the next from the skull s base to the tail bone. Each vertebra is hollow through the center where the spinal cord runs through. There are some signs and symptoms that you should check for if you suspect spinal injury on an injured person. Head...
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Spina Bifida Spinal Cord
772 wordsWhat is Spina Bifida? Spina bifida is a neural tube defect (NTD) which occurs within the first four weeks of pregnancy. The NTD occurs when the vertebrae and / or spinal cord of the fetus fail to develop properly, and results in varying degrees of damage to the spinal cord and nervous system. The damage is permanent. SB is usually accompanied by hydrocephalus. Treatment is urgent to minimize further neurological damage in the opening in the spine. The three most common types of SB are: Myelomeni...
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