BIO201 Lab 6

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Glendale Community College *

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201

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Biology

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Jan 9, 2024

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Lab 6 The Skeletal System BIO201L Student Name: Narek Hakobyan Access Code (located on the lid of your lab kit): AC-NFDQUK Lab Report Format Expectations Utilize college level grammar and professional formatting when completing this worksheet. Submissions without proper formatting, all required photos or sufficient responses will be rejected. Pre- lab Questions 1. List the functions of the skeletal system. Movement, protection, support, and making blood cells are all jobs of the skeletal system. 2. What material contributes the greatest to the compressive strength of bone? Calcium prosphate and calcium carbonate are the kinds of minerals that make bone strong when it is compressed. 3. Briefly describe the process of bone remodeling. Parts of the bone rebuilding process are The bone needs to change to meet the body's needs.

Lab 6 The Skeletal System BIO201L EXPERIMENT 1: CLASSIFICATION OF BONES Introduction Questions 1. Why is it important to classify bones? Provide a few sentences in response to this question, below. It helps doctors by giving them a better idea of how the human spine works. This information is very important for figuring out what's wrong with bones, planning treatments, and learning about the human body.In biology, putting bones into groups helps us figure out how different species have evolved and how they have changed and adapted to stay alive. It is an important part of learning in fields like medicine, biology, and science because it helps people understand how complicated skeletal systems work. Data and Observations Insert your observations for this experiment in the table below. Table 6: Classification of Bones Bone Name Classification by Shape Classification by Location tibia long appendicular femur long appendicular vertebrate irregular axial radius long appendicular tarpals short appendicular temporal flat axial sternum flat axial frontal flat axial carpal short appendicular ulna long appendicular Results and Discussion 1. Aside from length, what are some other common characteristics of a long bone? Are long bones typically associated with the axial or appendicular skeleton? Some things that all long bones have in common: they are hard and thick, and they help you move and be strong. At the end of long bones is cartilage. The appendicular skeleton is usually linked to long bones.

Lab 6 The Skeletal System BIO201L 2. Compare flat bones and long bones. How are they different? How are they the same? The inside of both flat and long bones is red. Long bones are not thin, but flat bones are. Flat bones don't have sponges on the ends, but long bones do.

Lab 6 The Skeletal System BIO201L EXPERIMENT 2: DIGITAL SLIDE EXAMINATION - BONES Introduction Questions 1. What is the purpose of cortical bone? What is the purpose of trabecular bone? It is the job of the cortical bone to support and protect the organs. It is the job of the trabecular bone to help the bone absorb and grow. 2. What are trabeculae? What is their function? Trabeculae bone is made up of thin bone tissue that is arranged in trabeculae. They help move weight from one place to another and are the source of bone absorption and development. 3. What are haversian systems? What is their function? What the Haversian system calls a "solid mass" of bones that are packed together and look like a solid mass. The job of these cells is to protect the blood vessels and talk to bone cells.

Lab 6 The Skeletal System BIO201L Data and Observations 1. Label the arrows in the following digital slide for a cortical bone: A. concentric B. haversian system C. interstitial system D. - harversian canal

Lab 6 The Skeletal System BIO201L 2. Label the arrows in the following digital slide for a trabecular bone: A. - trabeculae B. - marrow cavity Results and Discussion 1. Compare and contrast cortical and trabecular bone. The structure of both cortical and trabecular bone changes over time. This type of bone is stronger than trabecular bone. There are more holes in trabecular bone than in cortical bone.

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