CWInLab5Assignment(1)

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George Washington University *

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Biology

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Dec 6, 2023

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L ABORATORY 5 S KELETAL T ISSUE AND A XIAL S KELETON (P ART 1) I N -L AB A SSIGNMENT # 5 Name: Casey Waggett Anytime you see a grayed-out box that is where you need to type your answers. Once you complete submit this file on our Lab Blackboard site. Use the voiceover ppt videos, procedure videos, your Morton Manual and BSU lab manual to assist in answering the following questions. Before you start answering these questions you must first watch the Skeletal lab narration videos AND review all the Axial bone marking files. Label the following structures on this bone slide. a. lacunae with osteocyte b. central canal c. osteon d. canaliculi Compare the three types of cartilage (seen below in two views each): A. Type of cartilage: Fibrocartilage Where would you find is in the skeletal system? intervertebral discs, pubic symphysis, discs of knee joint One characteristic of cartilage A: thick collagen fibers predominate, matrix similar to but less firm than that in hyaline
B. Type of cartilage: Hyaline Where would you find is in the skeletal system? forms most of the embryonic skelteton; covers the ends of long bones in joint cavities, forms costal cartilage of the ribs, cartilage of nose, trachea, and larynx C. One characteristic of cartilage B: amorphous but firm matrix; collagen fibers form an imperceptible network, chondroblasts produce the matrix and when mature (chondrocytes) lie in lacunae D. Type of cartilage: elastic Where would you find is in the skeletal system? supports external ear (pinna); epiglottis One characteristic of cartilage C: similar to hyaline cartilage, but more elastic fibers in matrix Categorize the following bones (based on shape) a. cuneiforms b. humerus c. thoracic vertebrate d. sternum
Identify the foramina of the inferior view of the skull base. a. olfactory foramen of cribriform plate b. foramen ovale c. foramen lacerum d. foramen magnum Name the type of bone (for a. and c.) and structure of this long bone: a. spongy bone (ends of long bone and cavity) b. compact bone c. long bone
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