The humerus bisected lengthwise. Labels: a, marrow-cavity; b, hard bone; c, spongy bone; d, articular cartilage.
Martin, H. Newell & Martin, Ernest G. The Human Body: An Account of Its Structure and Activities and the Conditions of its Healthy Working (New York: Henry Holt and Company, 1917) 48
2400×1821, 1.1 MiB
1024×776, 190.8 KiB
640×485, 100.7 KiB
320×242, 35.6 KiB