study of the tissues of various structures, known as histology, and also in the study of cells. Their bodies tend to be dorso-ventrally flattened, they usually have five pairs of gill slits and a large mouth set on the underside of the head. Magnetic resonance imaging, computed tomography, and ultrasound imaging have all enabled examination of internal structures in unprecedented detail to a degree far beyond the imagination of earlier generations. It is found in such organs as sea anemone tentacles and the body wall of sea cucumbers. 37 Mammal anatomy edit Main article: Mammal anatomy Mammals are a diverse class of animals, mostly terrestrial but some are aquatic and others have evolved flapping or gliding flight.
Angiography using X-rays or magnetic resonance angiography are methods to visualize blood vessels. The practice was halted in Britain by the Anatomy Act of 1832, 81 82 while in the United States, similar legislation was enacted after the physician William. 48 Insects possess segmented bodies supported by a hard-jointed outer covering, the exoskeleton, made mostly of chitin. A b c Von Staden, Heinrich (October 2007). The extracellular matrix contains proteins, the chief and most abundant of which is collagen. They are clothed in hair and their skin contains glands which secrete sweat.
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7 Gross anatomy is the study of structures large enough to be seen with the naked eye, and also includes superficial anatomy or surface anatomy, the study by sight of the external body features. The mouth is found at the anterior end of the animal, and the anus at the base of the tail. The brain and heart are more primitive than those of other reptiles, and the lungs have a single chamber and lack bronchi. 41 42 A thorough working knowledge of anatomy is required by physicians, especially surgeons and doctors working in some diagnostic specialties, such as histopathology and radiology. "Warwick honorary professor explores new material from founder of modern human anatomy". 24 The defining characteristic of a vertebrate is the vertebral column, formed in the development of the segmented series of vertebrae. Over time, this medical practice expanded by a continually developing understanding of the functions of organs and structures in the body.