From Wikipedia, the free encyclopedia. The soft palate (also known as velum or muscular palate) is, in mammals, the soft tissue constituting the back of the roof of the mouth. The soft palate is distinguished from the hard palate at the front of the mouth in that it does not contain bone.rom Wikipedia, the free encyclopedia. The soft palate (also known as velum or muscular palate) is, in mammals, the soft tissue constituting the back of the roof of the mouth. The soft palate is distinguished from the hard palate at the front of the mouth in that it does not contain bone.
Proximal: Toward the beginning, the nearer of two (or more) items. For example, the proximal end of the femur is part of the hip joint, and the shoulder is proximal to the elbow.The opposite of proximal is distal.For a more complete listing of terms used in medicine for spatial orientation, please see the entry to  Anatomic Orientation Terms .or example, the proximal end of the femur is part of the hip joint, and the shoulder is proximal to the elbow. The opposite of proximal is distal. For a more complete listing of terms used in medicine for spatial orientation, please see the entry to  Anatomic Orientation Terms .
This is the most important transport mechanism in the PCT. The proximal tubule is the portion of the duct system of the nephron leading from Bowman's capsule to the loop of Henle. Structure and appearance The most distinctive characteristic of the proximal tubule is its brush border (or striated border).The luminal surface of the epithelial cells of this segment of the nephron is covered with densely packed microvilli forming a border readily visible under the light microscope.tructure and appearance The most distinctive characteristic of the proximal tubule is its brush border (or striated border). The luminal surface of the epithelial cells of this segment of the nephron is covered with densely packed microvilli forming a border readily visible under the light microscope.