The trachea bifurcates, or divides, into two branches at its most distal portion and forms the bronchi. The bifurcation is reinforced by a cartilaginous plate called the carina. Like the trachea, each bronchus is made up of cartilaginous rings to keep the lumen open as it goes into the lung. As the branches get smaller, they are called secondary bronchi and segmental (or tertiary) bronchi.
Pins and Needles - Paraesthesia. The most common cause of pins and needles is a moderately pinched nerve. Pins and needles is referred to as paraesthesia in the medical community. Did you know that feeling pins and needles can actually be a worse sign than having pain in your arm or leg.
These include: Alcoholism: Excessive alcohol intact can cause nerve damage resulting in burning pain in feet Chronic Kidney Disease: Toxins may cause burning pain in feet Hypothyroidism: Low levels of thyroid hormones can lead to swelling which places pressure on nerves resulting in burning foot pain, pins and needles and numbness HIV/AIDS: Approximately one third of people with HIV/AIDS suffer from painful nerve damage Vitamin Deficiency: A deficiency of vitamin B12 can cause burning pain ...