Color blindness is not a form of blindness at all, but a deficiency in the way you see color. With this vision problem, you have difficulty distinguishing certain colors, such as blue and yellow or red and green.Color blindness (or, more accurately, color vision deficiency) is an inherited condition that affects males more frequently than females.According to Prevent Blindness America, an estimated 8 percent of males and less than 1 percent of females have color vision problems.ed-green color deficiency is the most common form of color blindness. Much more rarely, a person may inherit a trait that reduces the ability to see blue and yellow hues.
5. Ascending aorta, right aortic arch, left aortic arch, connecting to the descending aorta. 6. A vascular ring involves the aorta, its branches and sometimes remnants of vascular structures forming a ring around trachea and esophagus. A vascular sling involves the pulmonary artery.
Trachea. The trachea is a longer section of the respiratory tract, shaped like a tube and approximately 5 inches in length. It has several C-shaped hyaline cartilage rings which are lined with pseudostratified ciliated columnar epithelium.(2) Those rings keep the trachea open for air all the time.he trachea is a longer section of the respiratory tract, shaped like a tube and approximately 5 inches in length. It has several C-shaped hyaline cartilage rings which are lined with pseudostratified ciliated columnar epithelium.