day19 skeletal system - waibiology.weebly.com
TRANSCRIPT
SKELETAL SYSTEM5/7/18
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DO NOW‣ List 3 of the most important organs in your
body and briefly explain their importance
AGENDA‣ Notes
‣ Formative summary
‣ Practice
ANNOUNCEMENTS‣ Finishing unit this week
‣ Unit Test next Monday
‣ Project
‣ Review
‣ Finals
SKELETAL SYSTEMCORNELL NOTES (PAGE 129)
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INQUIRY‣ Write 2 questions
AFTER WATCHING THE VIDEO, WRITE TWO QUESTIONS
• https://www.youtube.com/watch?v=w17NgL7TL6U
FIBRODYSPLASIA OSSIFICANS PROGRESSIVA (FOP)
• Read, annotate, and answer the text on FOP
• You have 7 minutes
FIBRODYSPLASIA OSSIFICANS PROGRESSIVA (FOP)
QUESTION• Based on the reading why do we need
bones?
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SKELETAL SYSTEM‣ Role: Support, movement, and protection
‣ Organ: Bone
‣ Tissues: cartilage, ligament
‣ Cells: Osteoblast, osteocytes, osteoclasts
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BONES‣ Provide structural support and protection
‣ Contains bone marrow (makes red and white blood cells)
‣ Stores minerals (i.e. calcium)
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TWO TYPES OF TISSUE IN BONE‣ Cortical (compact) bone: outer layer, strong
and tough
‣ Trabecular (cancellous) bone: inner layer, spongy and light
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BONE CELLS‣ Osteoblast & osteocytes: bone forming
cells
‣ Osteoclast: bone resorbing cells
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CARTILAGE‣ Connective tissue
‣ Tough, semi-transparent, elastic, flexible
‣ Absorb shock, reduce friction
CARTILAGE• Temporary cartilage: eventually replaced by bone
(ossification)
• Permanent cartilage: cartilage will not be ossified (tip of nose, external ear, walls of windpipe, voice box)
WARNING
3D PRINTERS
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JOINT‣ Where two or more bones come together
‣ Allow movement (for the most part)
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LIGAMENT‣ Tough tissue that connects two bones
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LIGAMENT
MAJOR TYPES OF BONES
SKELETAL SYSTEM WORKSHEET
• You have 10 minutes to complete this worksheet
FORMATIVE SUMMARYCOPY QUESTIONS AND THEN ANSWER COMPLETELY OR WRITE ANSWERS IN FULL AND COMPLETE SENTENCES
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FORMATIVE SUMMARY1. Why is having a skeletal system advantageous?
2. Predict how organisms without a vertebrae can move and/or protect their bodies?
3. How can you maintain healthy bones?
4. What would happen if joints were not present? Why?
5. Should the skeletal system be solely composed of hard structures like bone? Why?