SC121 Unit 7 Lab The Appendicular Skeleton and Joints Unit 7 Assignment Directions: Go to Real Anatomy and select Skeletal. Find the appropriate images to use as references and use your mouse to roll over the images and click on the highlighted structures. The skeletal images that are used in this worksheet include the skull, mandible, bones of the hand, bones of the pelvis, and selected joints. The joints are found in the Arthrology section of Real Anatomy. You can use the Related Images section to find additional images.
2. Which type of bone provides a large, flat surface area for muscle attachment? The flat bones are: the occipital, parietal, frontal, nasal, lacrimal, vomer, os coxæ (hip bone), sternum, and ribs. 3. Describe the location, composition, and function of the epiphyseal plate?
Why would Stefan think that an enlarged right deltoid tuberosity might indicate right-handedness? More attachment points for tendons and ligaments to form, indicating more muscle on that side, which could be an indication of the dominant side. 5. What is the location of the pubic symphysis of the female skeleton in the story? Medial in the center of the pelvis, where the two pubis bones meet.
* Stefan is referring to the two s-shaped bones. C. Which surface markings could Stefan use to distinguish the right humerus from the left? * By locating the anterior and posterior ends of the bone or locating the superior end of the bone. The proximal end has of the humerus has a rounded head that articulates with the glenoid cavity of the scapula. By locating it the he can tell if it is right or left when placed close to the midline of the body.
174 – a) shaft of the bone, b) end of the bone, c) between the shaft and end of the bone 7. Describe the location, composition, and function of the epiphyseal plate, articular cartilage, and periosteum. Ans: pg. 174 – epiphyseal plate: located in the metaphysis, composed of hyaline cartilage, is the growth plate; articular cartilage: covers the part of the epiphysis where the bone forms an articulation with another bone, composed of hyaline cartilage, reduces fiction and absorbs shock at freely movable joints; periosteum: surrounds the bone surface wherever it is not covered by articular cartilage, is a sheath of dense irregular connective tissue containing osteoblasts, functions to protect the bone, assists in fracture repair, nourishes bone tissue, and serve as an attachment point for ligaments and tendons 8. Why is osseous tissue considered a connective tissue?
B. The bone that Stefan is referring to as the “collarbone” is the clavicle (the S-shaped long, slender bone that lies horizontally across the anterior part of the thorax superior to the first rib). C. The surface marking that Stefan could use to distinguish the right humerus from the left humerus is if he holds the bone so that the capitulum and the trochlea face him (anterior) and then look at the head of the humerus (rounded head is superior (up) and pointing medially(towards the body’s midline)). If the head is facing left it is the left humerus, and if the head is facing right, it is the right humerus. He can also look at the deep olecranon fossa on the posterior side (where the olecranon process of the ulna fits in when the elbow is straightened).