BONES OF THE PECTORAL GIRDLEThe two pectoral girdles, right and left, provide attachment sites for muscles of the shoulder andbrachium. Each pectoral girdle consists of a scapula, or shoulder blade, and a clavicle, or collar-bone.Clavicle: A slender, double-curved bone that attaches the upper limbs to the axial skeleton. Itincludes the following features:●Sternal end: the blunt, medial extremity, which articulates with the manubrium of thesternum.Acromial end: the slightly flattened lateral extremity, which articulates with the acro-mion of the scapula.Scapula: A triangular bone with projections for muscle attachment. It contains many features,which include:Spine: the narrow ridge on the posterior side.Acromion: a flattened, prominent process at the lateral end of the spine.=Coracoid process: a beak-like process superior and medial to the glenoid cavity (corac =crow + -oid = resemblance to).Glenoid cavity: a socketed depression inferior to the acromion, which articulates withthe head of the humerus.Supraspinous fossa: a depression superior to the spine.Infraspinous fossa: a depression inferior to the spine.Subscapular fossa: the large, slightly depressed surface on the anterior side.Lateral (axillary) border: the lateral edge, which is near the axilla.Medial (vertebral) border: the medial edge, which is near the vertebral column.Exercise 2: The Pectoral GirdleExamine the bones of the pectoral girdle and their features using figure 9.2 and 9.3 as a guide. Labelthe blanks in the photos below.Acromial end(lateral)Posterior viewConoid tubercleBody of clavicleExercise 9. The Skeletal System: The Appendicular SkeletonAnterior viewFigure 9.2a: The clavicle.Sternal end(medial)Obluedoor, LLC119 BONES OF THE PECTORAL GIRDLEThe two pectoral girdles, right and left, provide attachment sites for muscles of the shoulder andbrachium. Each pectoral girdle consists of a scapula, or shoulder blade, and a clavicle, or collar-bone.Clavicle: A slender, double-curved bone that attaches the upper limbs to the axial skeleton. Itincludes the following features:●Sternal end: the blunt, medial extremity, which articulates with the manubrium of thesternum.Acromial end: the slightly flattened lateral extremity, which articulates with the acro-mion of the scapula.Scapula: A triangular bone with projections for muscle attachment. It contains many features,which include:Spine: the narrow ridge on the posterior side.Acromion: a flattened, prominent process at the lateral end of the spine.=Coracoid process: a beak-like process superior and medial to the glenoid cavity (corac =crow + -oid = resemblance to).Glenoid cavity: a socketed depression inferior to the acromion, which articulates withthe head of the humerus.Supraspinous fossa: a depression superior to the spine.Infraspinous fossa: a depression inferior to the spine.Subscapular fossa: the large, slightly depressed surface on the anterior side.Lateral (axillary) border: the lateral edge, which is near the axilla.Medial (vertebral) border: the medial edge, which is near the vertebral column.Exercise 2: The Pectoral GirdleExamine the bones of the pectoral girdle and their features using figure 9.2 and 9.3 as a guide. Labelthe blanks in the photos below.Acromial end(lateral)Posterior viewConoid tubercleBody of clavicleExercise 9. The Skeletal System: The Appendicular SkeletonAnterior viewFigure 9.2a: The clavicle.Sternal end(medial)Obluedoor, LLC119

Pectoral Girdle along with clavicle or the collar bone make the bones of the upper limb where it…

Answered: 8.. 10. 11. posterior 12. 6. 13. Figure…

8.. 10. 11. posterior 12. 6. 13. Figure 9.3: The Scapula: b) posterior view; c) anterior view. 2. anterior 5 bluedoor, LLC

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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