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Sudden onset cauda equina syndrome is regarded as a medical/surgical emergency. [4] Surgical decompression by means of laminectomy or other approaches may be undertaken within 6, [18] 24 [19] or 48 hours of symptoms developing if a compressive lesion (e.g., ruptured disc, epidural abscess, tumor or hematoma) is demonstrated. Early treatment may ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Cell biology – also called cytology, is a branch of biology that studies the structure and function of the cell, which is the basic unit of life. [110] Cell biology is concerned with the physiological properties, metabolic processes, signaling pathways , life cycle , chemical composition and interactions of the cell with their environment.
Involution is the shrinking or return of an organ to a former size. At a cellular level, involution is characterized by the process of proteolysis of the basement membrane (basal lamina), leading to epithelial regression and apoptosis, with accompanying stromal fibrosis.
The definition of life has long been a challenge for scientists and philosophers. [ 2 ] [ 3 ] [ 4 ] This is partially because life is a process, not a substance. [ 5 ] [ 6 ] [ 7 ] This is complicated by a lack of knowledge of the characteristics of living entities, if any, that may have developed outside Earth.
Biological processes are regulated by many means; examples include the control of gene expression, protein modification or interaction with a protein or substrate molecule. Homeostasis: regulation of the internal environment to maintain a constant state; for example, sweating to reduce temperature
Human biology tries to understand and promotes research on humans as living beings as a scientific discipline. It makes use of various scientific methods, such as experiments and observations, to detail the biochemical and biophysical foundations of human life describe and formulate the underlying processes using models. As a basic science, it ...
Medical biology is a field of biology that has practical applications in medicine, health care, and laboratory diagnostics. It includes many biomedical disciplines and areas of specialty that typically contains the "bio-" prefix such as: molecular biology, biochemistry, biophysics, biotechnology, cell biology, embryology,