Chapter 7 Questions

A - bones of the face The bones of the skull including facial bones are part of the axial skeleton.

C - hyoid bone The hyoid bone does not articulate directly with any other bone. Instead, it is anchored by the stylohyoid ligaments to the styloid process of the temporal bones.

B - the maxilla The maxilla is the only listed bone that is not part of the cranium. Instead, it is a facial bone.

A - the temporal bone The temporal bone is lateral and too far posterior to contribute to the orbit.

C - the sphenoid bone The sphenoid bone is a cranial bone.

B - nasal septum The vomer and ethmoid bones form the bony parts of the nasal septum. The vomer forms the inferior portion of the septum. The perpendicular plate of the ethmoid bone forms the superior portion of the septum.

B - lumbar The lumbar vertebrae have the largest bodies.

B - rib facets Rib facets are only found on thoracic vertebrae.

5 A typical adult skeleton has 5 lumbar vertebrae, 12 thoracic vertebrae, and 7 cervical vertebrae.

C - scoliosis; abnormal lateral curvature Scoliosis is an abnormal lateral curvature that occurs most often in the thoracic region of the vertebral column.

C - the clavicle The clavicle is part of the APPENDICULAR skeleton.

False Each rib articulates with two separate vertebrae. The tubercle of the rib articulates with the rib facet of a thoracic vertebra on the transverse process. The head of the rib articulates with the bodies of two separate vertebrae.

C - the humerus The humerus is part of the upper limb.

C - the acromion Yes, the acromion forms a joint with the clavicle.

C - the ulna The olecranon articulates with the humerus to form the elbow joint.

D - humerus The ulnar nerve, which runs behind the medial epicondyle of the humerus at its distal end (at the elbow), is responsible for the painful, tingling sensation you experience when you hit your "funny bone" (associate humerus with humorous).

A - The radius is the lateral bone in the forearm. In the anatomical position, the radius would be supinated into the lateral position.

D - The pelvic inlet is heart-shaped in the male. The female pelvis is modified for childbearing; it is wider, shallower, and lighter than the male pelvis. The male pelvis has thicker/heavier bones with more prominent bone markings, acetabula that are larger and closer together, and a narrower, heart-shaped pelvic inlet.

C - the femur The femur is the largest, longest, and strongest bone in the body. Its durable structure reflects the stress exerted on the femur as it bears the weight of the body when standing, walking, or running.

B - the neck of the femur The neck of the femur is at risk because of the large percentage of spongy bone in the neck.

A - medial longitudinal arch The medial longitudinal arch runs longitudinally along one side, the medial side, of the foot.

D - tibial condyle The tibial condyles (medial and lateral) are two flat, oval-shaped articular surfaces found at the proximal end of the bone.