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.
Burning, prickly, itchy skin. tuckerace. My husband age 59 has been experiencing burning, prickly itchy skin at random times but mostly during the evening. He has the sensation of pins and needles pricking his skin from the inside out. This mostly occurs on his arms or legs or back, but not concurrently. First it was his legs then it moved to his back and currently the problem is on his arms. The sensation will be symetrical, i.e. both arms.