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.
The trachea is an important structure within your respiratory system, which is the organ system that delivers oxygen to your bloodstream. The trachea is a rigid tube that conducts air from your larynx to your bronchi.The trachea's rigidity is maintained by a series of cartilaginous rings arranged along its length called C-shaped cartilage rings.hese cartilage rings are C-shaped to provide room for your esophagus, which lies along the backside of your trachea. The gaps between the cartilage rings are bridged by a tough elastic membrane. The trachea is very resistant to compression, but it is capable of stretching lengthwise.