The kidney is not one large filter. Each kidney is made up of about a million filtering units called nephrons. Each nephron filters a small amount of blood. The nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process.
Generally speaking, first babies tend to engage from about 34 weeks to 36 weeks. However, some babies only engage once labour starts. Try not to worry, though. Even if your baby hasn't engaged by the time labour starts, in most cases, it's not a problem.
We began by asking our survey respondees how long theyâd dated before getting engaged. Overall, Americans tend to move pretty quickly: nearly half of all engagements occur two years or less into a relationship. On the other end of this spectrum, only 6% of couples date for 8 years or more before getting engaged.