BMS 250 Chapter Notes - Chapter 7: Nutrient Canal, Metaphysis, Endoplasmic Reticulum
Document Summary
7. 2b classification of bones: bones appear in various shapes and sizes, depending upon their function. The four classes of bone are determined by shape are long bones, short bones, flat bones, and irregular bones: long bones are greater in length than width. Long bones are found in the upper limbs(cid:345)arm, forearm, palm, and fingers(cid:346) and lower limbs(cid:345)thigh,leg,sole of the foot, and toes(cid:346). The small bones in the fingers and toes are long bones, as are the larger tibia and fibula of the lower limb: short bones have a length nearly equal to their width. Examples of short bones include the carpals(cid:345)wrist bones(cid:346) and tarsals(cid:345)bones in the foot(cid:346). Sesamoid bones, which are small, sesame seed-shaped bones along the tendons of some muscles, are also classified as short bones. The patella(cid:345)kneecap(cid:346) is the largest sesamoid bone: flat bones are named because they have flat, thin surfaces that may be slightly curved.
