SC.912.L.14.15

 What are bone markings and why are they important?

 Bone markings are features visible on the surface of bones.  Each marking has a specific function.  These markings allow medical professionals to perform highly sensitive tasks. ◦ The mental foramen in the chin is used by dentists to administer anesthesia. ◦ Assists in location of injection site for epidural and thoracocentesis.

 Foramen ( hole) a passage through which blood vessels, nerves or ligaments pass.  Meatus ( passage) a tubelike channel extending within a bone  Fossa ( ditch) a shallow depresssion

 Condyle ( knuckle-like) large rounded prominence  Head – rounded projection that is support by a narrow portion (neck) of a bone  Facet – smooth flat surface

 Tuberosity – large, rounded projection with a rough surface  Spine – sharp, slender projection  Trochanter – Large blunt projection only on femur  Crest – Prominent ridge or border

 Complete surface features of bones (ab) and (c)  hill.com/sites/ /student_view0/c hapter7/labeling_exercises.html# hill.com/sites/ /student_view0/c hapter7/labeling_exercises.html#

 Humerus--- skeletal/bone_humerous_1_s.html skeletal/bone_humerous_1_s.html  Femur skeletal/bone_femur_1_s.html skeletal/bone_femur_1_s.html  Bone Terms skeletal/bone_terms_1.html skeletal/bone_terms_1.html

 Give each student bones or images of bones and have them label the markings.

 Images from faculty.rcc.edu/olin/docs/AMY2A/BONE%20M ARKINGS.ppt