Skeletal System Introduction Functions & Bone Structure
ACOS OBJ 6.1) Identifying functions of the skeletal system. http://www.youtube.com/watch?v=v KMFwAF_6Z0 Composed of 206 Bones Bones- Organs of the Skeletal
System Provide points of attachment for muscles,
Protect & Support softer tissues House blood-producing cells Store inorganic salts Contain passageways for blood vessels and nerves. What are Bones Made Of?
Bones are made of several different things: Bone Tissue Cartilage Dense connective tissue Blood Nervous Tissue
Osteocytes - Bone Cells - Transport nutrients & wastes to and from nearby cells. Extracellular Matrix of bone tissue is largely composed of collagen & inorganic salts - collagen= strength & resilience - inorganic salts= cause bone to be hard
and resistant to crushing. Processes- Bony projections that provide sites for ligaments & tendons to attach. Grooves & Openings- Form passageways for blood vessels & nerves.
Epiphysis- located at the end of bone. Forms a joint with another bone. Articular Cartilage: hyaline cartilage located on outer surface of epiphysis. (Articulating Portion) -Diaphysis- Shaft of the bone located
between the epiphyses. Periosteum- Tough, vascular covering of fibrous tissue that completely encloses the bone. Helps to form and repair bone tissue. Medullary Cavity- Semi rigid tube with a hollow chamber.
Formed by compact bone Lined with a thin layer of bone forming cells= endosteum Filled with soft connective tissue known as marrow. 1. Compact Bone= Composes wall of diaphysis. Tightly packed
NO Gaps Resists Bending 2. Spongy Bone Found in Epiphyses beneath a layer of thin compact bone. Helps to reduce the bones weight
Red Marrow= Functions in the formation of Red blood cells(erythrocytes) , white blood cells(leukocytes), and blood platelets. In an adult found in: skull, ribs, sternum, clavicles, vertebra, and hipbones.
Yellow Marrow= Replaces red Bones can form 2 ways 1. Intramembranous bones originate between sheet-like layers of connective tissues. EX: Flat bones of the skull 2. Endochondral bones begin as masses of cartilage that bone tissue
later replaces. Majority of bones in the skeletal system are endochondral. Osteoblasts- Bone forming Cells Osteoclasts- Break down calcified matrix. 1. Give shape to structures like the head, face, thorax, and limbs. 2. Provide support & protection
EX: Bones of lower limbs, pelvis, & backbone support the bodys weight. Bones of the skull protect eyes, ears, & brain. Rib cage & shoulder girdle protect the heart and lungs. 3. Body Movement
4. Blood Cell Formation (Hemopoiesis) Blood cells are made in the liver, spleen, and bone marrow. Marrow is located in the medullary cavity, irregular spaces of spongy bone, & large canals of compact bone tissue.
5. Storage of inorganic salts Intercellular matrix of bone tissue rich in calcium salts. Calcium phosphate VITAL metabolic processes require CALCIUM. Blood clot formation Nerve impulse conduction Muscle cell contraction
In this case study, considering dust direct effect alone may not be enough to represent SAL thermal property, and its subsequence impact on hurricane development. Future Works (1) Considering dust indirect effect by employing different chemistry schemes such as MOSAIC,...
was given by Shannon McDonald.. An all-day workshop also discussed parking. This paper summarizes the presentation and discussions from the 2014TRB/AUVSI Automated Vehicles Symposium and expands upon the potential new relationships of parking, automated vehicles, transit and urban design. CONCLUSIONS
Introduction Chapter 1 Wireless Comes of Age Guglielmo Marconi invented the wireless telegraph in 1896 Communication by encoding alphanumeric characters in analog signal Sent telegraphic signals across the Atlantic Ocean Communications satellites launched in 1960s Advances in wireless technology Radio,...
but only the hedge funds were able to take advantage of that. A simplified exampleso how did it all work out? The active long-only managers were 0.4% overweight ABC on average. So as a group they lost 0.2% on the...
Our goal withtheHealth Information System "is to produce relevant information that health system stakeholders can use for making transparent and evidence-based decisions for health system interventions" (HMN). But the challenges here are many: You need . access . to data....
Case Challenge Osteo vs UNI S. Hofmann Allgemeines und Orthopädisches LKH Stolzalpe Patient 57 years, male Orthopedic surgeon Sporting active Left dist Tibia # 1973 Left ACL 1999 Pain le knee Lat deg. Meniskus 2013 conservative Clinic 2014 activated arthritis...
HSC: All My Own Work Collaborative or cooperative learning is where ideas are shared and tested with each other with the intention of extending everyone's thinking on the topic. HSC: All My Own Work It is of little value if...
Ready to download the document? Go ahead and hit continue!