ACTIVITY 2 Upper Limb: Examining the Bones of the Arm and Forearm The humerus is

Question

ACTIVITY 2 Upper Limb: Examining the Bones of the Arm and Forearm The humerus is the only bone found in the arm. It is the longest and largest bone of the upper limb. 1 On the skeleton, locate the humerus in each arm. Notice that it is involved in the formmation of two major joints: the shoulder joint and the elbow joint. Posterior On a skeleton or disarticulated humerus, identify the bone markings labeled in the figures on this page -Head Greater Greater Intertubercular groove Anatomical neck Lesser tubercle Surgical neck Radial Shaft Deltoid tuberosity Radial foss3 Coronoid fossa Medial ateral epicondyle fossa For each of the bone markings of the humerus listed in the table, speculate on its function by placing a check mark in the appropriate function column. Bone Marking Function Passageway for nerves, blood vessels, rticulating surface at a joint Atachoment site for tendons and ligaments tendons, or ligaments Head Greater tubercle Medial epicondyle Olecranon fossa Radial groove

Explanation / Answer

head - articulation
greater tubercle- attachment sites for tendon and ligaments

intertubercular groove- attachment for tendon and ligaments and passaging for nerves, blood vessels, tendons or ligaments
medial Epicondyle- attachment site

olecranon Fossa- Attachment for muscles or articulations

radial groove- attachment for tendon and ligaments and passaging for nerves, blood vessels, tendons or ligaments

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