BIO 351

Health Assessment Quiz 3 Thorax and Lungs • Structures of the thoracic cavity o Thoracic cage- borders ▪ Bony structures; sternum, rubs, vertebrae, diaphragm ▪ ▪ Sternal notch: g ives you a baseline of where the trachea alignment is ▪ Costal angle: 90 or less, unless hyersema (hyper inflation of the lungs) • Anterior thoracic landmarks o Suprasternal notch: U-shaped depression just above sternum o Sternum: breastbone: manubrium, body, xiphoid process o Sternal angle ▪ Bony ridge, f...