Joint Structure And Function Exam Questions And Answers

Joint Structure And Function Exam
Questions And Answers

/. What are the competing needs of joints? - Answer-✅1) Stability - for strength/support
2) Mobility - to increase ROM

/.Can we have both stability and mobility? - Answer-✅Nah - it's usually a tradeoff
between the two

/.Structure determines... - Answer-✅function!

/.How do we classify joints by freedom of movement? (3)
Give an example of each. - Answer-✅1) synarthrosis - little to no movement (ex: skull)
2) amphiarthosis - slight movement (ex: joints between individual vertebral bones)
3) diarthrosis - free movement (ex: shoulder)

/.How do we classify joints by structure? (3) - Answer-✅1) Fibrous
2) Cartilaginous
3) Synovial

/.What are the characteristics of fibrous joints? - Answer-✅-bone-to-bone connection
with dense CT
-no joint cavity
-usually very little movement (synarthrosis)

/.What are the 3 types of fibrous joints? Give an example of each. - Answer-✅1) Suture:
skull bones
2) Gomphosis: periodontal membrane holds teeth down to mandible
3) Interossesus membrane: between radius and ulna

/.What is the exception to the "little movement" rule of fibrous joints? - Answer-✅The
interosseus membrane between the radius and ulna because it moves a lot through
pronation and supination of the forearm

/.What are the characteristics of cartilaginous joints? - Answer-✅-bones are united by
cartilage: either hyaline or fibrocartilage
-no joint cavity
-slight movement - amphiarthrosis

/.Give 2 examples of hyaline cartilaginous joints. - Answer-✅1) epiphyseal growth plate
2 costal cartlage