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by: amira boyd

02/19 NOTES MURDOCK (T/TH) 63954

Marketplace > San Francisco State University > 63954 > 02 19 NOTES MURDOCK T TH
amira boyd
GPA 3.0
BIO 100
Heather Murdock

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About this Document

I was only able to get thursday notes but I will have both days next week sorry!! Also, I will have the study guide by sunday night
BIO 100
Heather Murdock
Class Notes
25 ?




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This 2 page Class Notes was uploaded by amira boyd on Friday February 20, 2015. The Class Notes belongs to 63954 at San Francisco State University taught by Heather Murdock in Spring2015. Since its upload, it has received 91 views.


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Date Created: 02/20/15
Thursday 0219 BIO 100 NOTES FuncUons Movement Bones muscles tendons cartilage ligaments 2 Shape and Structure 3 Protection of inner organs 4 Mineral storage especially calcium which hardens ossi es the bones 5 Detoxify blood by accepting hard mineral toxins into the bones 6 Balance pH of blood 7 Bone marrow has stem cells creating new cells 8 Sound Transduction 3 little bones in our ears to help us hear Functions of Calcium 1 2 3 4 5 6 Hardens bones Muscle contractions Nerve impulses Blood clotting Fetal development Milk production Structure of Bones 1 Compact bone makes up 80 smooth hard outer covering Proteins coagen quotelastin in bonesquot Cmdum 2 important cells osteocytes quotbone cellsquot Osteoblasts cells help to build bone by taking CA in to bone tissue Osteoclasts cells that help release CA from bones by crumbling and breaking down bone tissue This process is called bone remodeling Two hormones help Calcitonin release from thyroid gland and stimulates osteoblasts to build bones by soring calcium Parathyroid PTH released from the para thyroid gland behind thyroid in back of neck This happens when blood calcium levels are low and it stimulate the osteoclast to crumble bone release calcium into blood Osteoporosis bone disease when osteoclasts break down bones faster than osteoblast build bones and the bones become easily breakable weak and brittle Exercise more calcium help to prevent this 2nCI part of bone 20 spongy bone lots of pores lled with bones marrow Two types of marrow Red bone marrow has stem cells Yellow bone marrow fatty can convert to red marrow Growth hormone release throughout life most release during puberty from pituitary gland and stimulates growth in all cells Stops the epiphysis end of the bones from hardening while you39re still growing


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