It sounds normal to me. My posterior communicating artery is patent, and so I'm getting good blood flow to my brain. If someone were closing an aneurysm in my brain, I would like to think the arteries were patent (open) when the procedure was done.
Coiling doors and grilles are manufactured from materials that offer the ability to mechanically or manually coil. Coiling doors and grilles are commonly installed in counter, garage and storefront applications.
Coiling up - reduces the surface area of the snake - and thus reduces the heat loss.
Secondary structure. The coiling is the formation of the alpha helix. The folding is the formation of the beta sheets.
secondary
During interphase, chromosomes are almost entirely stretched out. However, as the cell cycle progresses the coiling increases, and reaches a maximum at metaphase.
Coiling= unactive Uncoiling= active because the DNA needs to be uncoiled for protein synthesis to take place
DNA
Coiling doors and grilles are manufactured from materials that offer the ability to mechanically or manually coil. Coiling doors and grilles are commonly installed in counter, garage and storefront applications.
The coiling of the protein chain backbone into an alpha helix is referred to as the secondary structure. It is composed of several polypeptide chains.
Head and tail.
helical spring
Positive gravitropism