which are lymphatic tissues that prevent infections by releasing white blood cells. The larynx creates the entrance to the lower respiratory system. The epiglottis is a leaf-shaped flap. This help prevents food or liquid from crossing the line when swallowing and there are two pairs of strong connective tissues which are wrapped around the vocal cords which vibrates making noise when talking or singing.The lower respiratory tract consists of the windpipe and within the lungs
