Name:________________________ Date:_________________________ Organization of the Skeleton Prelab: the skeleton can be divided into two major portions: (1) axial skeleton, which consists of the bones and cartilages of the head, neck, and trunk, and (2) the appendicular skeleton, which consists of the bones of the limbs and those that anchor the limbs to the axial skeleton. Purpose: To review the organization of the skeleton, the major bones of the skeleton, and the terms used to describe the skeletal structures. Materials: textbook, articulated human skeleton, colored pencils Procedure: 1. Review the section entitled “Skeletal Organization” in chapter 7 of “Hole’s” [p. 121-139 in Marieb] 1 2. As a review activity, label the major bones of the anterior view of the skeleton. A. __________________________ B. __________________________ C. _________________________ D. __________________________ E. __________________________ F. __________________________ G. __________________________ H. __________________________ I. __________________________ J. __________________________ K. __________________________ L. __________________________ M. _________________________ N. __________________________ O.__________________________ 2 3. As a review activity, label the major bones of the posterior view of the skeleton. A. __________________________ B. __________________________ C. __________________________ D. __________________________ E. __________________________ F. __________________________ G. __________________________ H. __________________________ I. __________________________ J. __________________________ 3 4. Examine the human skeleton and locate the following parts. As you locate the following bones, note the number of each in the skeleton. Palpate as many of the corresponding bones in your own skeleton as possible. Axial Skeleton Skull Cranium Face Middle ear bone Hyoid Bone Vertebral column Vertebra Sacrum Coccyx Thoracic cage Rib Sternum # in body 8 14 6 1 24 1 1 24 1 Appendicular Skeleton Pectoral girdle scapula Clavicle Upper limb bones Humerus Radius Ulna Carpal Metacarpal Phalanx Pelvic girdle Coax (hipbone) Lower limb bones Femur Tibia Fibula Patella Tarsals Metatarsals Phalanx # in body 2 2 2 2 2 16 10 28 2 2 2 2 2 14 10 28 5. Study table 5.1 in Marieb or Table 7.2 in “Hole’s”. Locate an example of each of the following features (bone markings) on the bone listed. Noting the size, shape, and location in the human skeleton. Condyle – occipital Crest – tibia, hipbones Epicondyle- Femur Facet – vertebra Foramen- skull Fossa – humerus Head – humerus Meatus – temporal Sinus – skull Spine – scapula Suture – skull Trochanter – femur Tubercle – humerus Tuberosity - tibia Ramus (armlike bar of bone) mandible)- mandible 6. Complete the conclusion questions. 4 Conclusion: Part A 1. The cranium and facial bones compose the _________________________________. 2. The ____________________________ bone supports the tongue. 3. The ____________________________ at the inferior end of the sacrum is composed of several fused vertebrae. 4. Most ribs are attached anteriorly to the __________________________________. 5. The thoracic cage is composed of _______________________pairs of ribs. 6. The scapulae and the clavicles together form the _______________________________________. 7. The humerus, radius, and ____________________________________ articulate to form the elbow joint. 8. The wrist is composed of eight bones called _________________________________. 9. The coxae (hipbones) are attached posteriorly to the ________________________. 10. The pelvic girdle (coxae), sacrum, and coccyx together form the ___________________________________________. 11. The _____________________________________ covers the anterior surface of the knee. 12. The bones that articulate with the distal ends of the tibia and fibula are called_____________________________________________. 13. All finger and toe bones are called ____________________________________. Part B Match the terms in column A with the definitions in column B. Place the letter of your choice in the space provided. ______1. condyle a. Opening or passageway ______2. Crest b. relatively large process ______3. head c. Rounded process that usually articulate with another bone ______4. trochanter d. Deep depression ______5. spine e. Narrow ridge like projection ______6. Meatus f. Armlike bar of bone ______7. foramen g. Thornlike projection ______ 8. Fossa h. air-filled cavity in bone ______9. Ramus i. interlocking line of union ______10, sinus j. Rounded enlargement at the end of bone ______11. suture k. tubelike passageway 5