PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing.

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PowerPoint ® Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings PART F 5 The Skeletal System

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Joints  Articulations of bones  Functions of joints  Hold bones together  Allow for mobility  Ways joints are classified  Functionally  Structurally

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Functional Classification of Joints  Synarthroses  Immovable joints  Amphiarthroses  Slightly moveable joints  Diarthroses  Freely moveable joints

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Structural Classification of Joints  Fibrous joints  Generally immovable  Cartilaginous joints  Immovable or slightly moveable  Synovial joints  Freely moveable

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Summary of Joint Classes [Insert Table 5.3 here] Table 5.3

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Fibrous Joints  Bones united by fibrous tissue  Example :  Sutures  Syndesmoses  Allows more movement than sutures  Example : Distal end of tibia and fibula

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Fibrous Joints Figure 5.28a–b

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Cartilaginous Joints  Bones connected by cartilage  Example :  Pubic symphysis  Intervertebral joints

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Cartilaginous Joints Figure 5.28c–e

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Bellwork- 11/3/15  At work, a box fell from a shelf onto Bertha’s acromial region. In the emergency room, the physician felt that the head of her humerus had moved into the axilla. What had happened to Bertha?  Groups who didn’t go yesterday, have your x-rays out.

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Announcements  Wednesday Power Hour- A lunch  Knee Replacement Surgery Video Screening  Video will start approximately 12:10 and will last about 10 mins.

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Synovial Joints  Articulating bones are separated by a joint cavity containing synovial fluid

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Fill out the table below pgs JointDescription of Movement Examples Plane Hinge Ball-and-Socket Pivot

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Synovial joint— Plane joint

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Synovial joint— hinge joint

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Synovial joint— Ball and socket joint

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Synovial joint— Pivot (rotary) joint

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Types of Synovial Joints Figure 5.30a–c

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Types of Synovial Joints Figure 5.30d–f

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings  Class activity One student at a time will volunteer to select a Moveable Joints Charades index card and act out the activity listed on the card. Students watching will guess what activity is being performed and write it on their Moveable Joints Charades Activity Sheet. Students will list at least three bones used to perform the activity and at least two types of bone joints used. Repeat the activity with another student volunteer and another activity on the Moveable Joints Charades index cards.

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Complete the Chart  Give at least 3 bones involved in each activity  Give at least 2 types of synovial joints involved in each activity  Explain what type of movement is occurring in each activity.  If not completed in class, this will be homework.

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Synovial Joints Figure 5.28f–h

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Features of Synovial Joints  Articular cartilage (hyaline cartilage) covers the ends of bones  A fibrous articular capsule encloses joint surfaces  A joint cavity is filled with synovial fluid  Ligaments reinforce the joint

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Structures Associated with the Synovial Joint  Bursae—flattened fibrous sacs  Lined with synovial membranes  Filled with synovial fluid  Not actually part of the joint  Tendon sheath  Elongated bursa that wraps around a tendon

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings The Synovial Joint Figure 5.29

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Inflammatory Conditions Associated with Joints  Bursitis—inflammation of a bursa usually caused by a blow or friction  Tendonitis—inflammation of tendon sheaths  Arthritis—inflammatory or degenerative diseases of joints  Over 100 different types  The most widespread crippling disease in the United States

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Clinical Forms of Arthritis  Osteoarthritis  Most common chronic arthritis  Probably related to normal aging processes  Rheumatoid arthritis  An autoimmune disease—the immune system attacks the joints  Symptoms begin with bilateral inflammation of certain joints  Often leads to deformities

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Clinical Forms of Arthritis  Gouty arthritis  Inflammation of joints is caused by a deposition of uric acid crystals from the blood  Can usually be controlled with diet

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Developmental Aspects of the Skeletal System  At birth, the skull bones are incomplete  Bones are joined by fibrous membranes called fontanels  Fontanels are completely replaced with bone within two years after birth

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Ossification Centers in a 12-week-old Fetus Figure 5.32

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life  Fetus  Long bones are formed of hyaline cartilage  Flat bones begin as fibrous membranes  Flat and long bone models are converted to bone  Birth  Fontanels remain until around age 2

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life  Adolescence  Epiphyseal plates become ossified and long bone growth ends  Size of cranium in relationship to body  2 years old—skull is larger in proportion to the body compared to that of an adult  8 or 9 years old—skull is near adult size and proportion  Between ages 6 and 11, the face grows out from the skull

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life Figure 5.33a

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life Figure 5.33b

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life  Curvatures of the spine  Primary curvatures are present at birth and are convex posteriorly  Secondary curvatures are associated with a child’s later development and are convex anteriorly  Abnormal spinal curvatures (scoliosis and lordosis) are often congenital

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life Figure 5.16

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life  Osteoporosis  Bone-thinning disease afflicting  50% of women over age 65  20% of men over age 70  Disease makes bones fragile and bones can easily fracture  Vertebral collapse results in kyphosis (also known as dowager’s hump)  Estrogen aids in health and normal density of a female skeleton

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life Figure 5.34

Copyright © 2009 Pearson Education, Inc., publishing as Benjamin Cummings Skeletal Changes Throughout Life Figure 5.35