Search results
Results From The WOW.Com Content Network
Scientists have studied the process of neural tube formation in vertebrate embryos since the late 1800s. [2] Across vertebrate groups including amphibians , reptiles , birds , and mammals , the neural tube (the embryonic precursor of the spinal cord ) forms through the invagination of the neural plate into a tube, known as primary neurulation.
Tube bending is any metal forming processes used to permanently form pipes or tubing. Tube bending may be form-bound or use freeform-bending procedures, and it may use heat supported or cold forming procedures. Form bound bending procedures like “press bending” or “rotary draw bending” are used to form the work piece into the shape of a ...
This process is responsible for ciliary/flagellar beating, as in the well-known example of the human sperm. The radial spoke is another protein complex of the axoneme. Thought to be important in regulating the motion of the axoneme, this "T"-shape complex projects from each set of outer doublets toward the central microtubules.
Cells take on a columnar appearance in the process as they continue to lengthen and narrow. The ends of the neural plate, known as the neural folds, push the ends of the plate up and together, folding into the neural tube, a structure critical to brain and spinal cord development. This process as a whole is termed primary neurulation. [1]
For example, a closet rod sagging under the weight of clothes on clothes hangers is an example of a beam experiencing bending. On the other hand, a shell is a structure of any geometric form where the length and the width are of the same order of magnitude but the thickness of the structure (known as the 'wall') is considerably smaller.
In biology, a tubule is a general term referring to small tube or similar type of structure. Specifically, tubule can refer to: a small tube or fistular structure; a minute tube lined with glandular epithelium [1] any hollow cylindrical body structure; a minute canal found in various structures or organs of the body [2]
Cartoon showing the isostatic vertical motions of the lithosphere (grey) in response to a vertical load (in green) In geology, lithospheric flexure (also called regional isostasy) is the process by which the lithosphere (rigid, thin outer layer of the Earth) bends under the action of forces such as the weight of a growing orogeny or changes in ice thickness related to glaciation.
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