Anatomy of a joint Assignment | Top Essay Writing

Articulations

“How does the anatomy of a joint relate to the way that joint moves?”

 

Model 1: Primary Joint Classifications

 

Functional Name	Structural Name	Degree of Movement Permitted
Synarthroses	Fibrous	Immovable
Amphiarthorises	Cartilaginous	Only slightly movable
Diarthrosis	Synovial	Freely movable

 

Critical Thinking Questions

 

1. What are the two ways that an immovable joint can beclassified?

2. What tissue does your group think forms the juncture between bones in anamphiarthrosis?

3. What is the range of movement permitted by a synovialjoint?

4. What connective tissue is joining the radius and ulna to theleft?

5. How would you classify this jointstructurally?

6. Is this a synarthrosis, amphiarthrosis, ordiarthrosis?

7. What connective tissue is joining the ribs tothe sternum in the picture to theright?

8. How would you classify this jointstructurally?

9. Is this a synarthrosis, amphiarthrosis, ordiarthrosis?

Synarthrosis.

10. Stand up and move around a little. Then as agroup,

come up with at least 5 joints that are freely moveable (they allow the bones they connect to move across a wide range of motion in one or more planes), and list them in the space below.

Model 2: Classification of Synovial Joints

 

Types	Examples	Structure	Movement
Uniaxial			Along one axis
Hinge	Cubital (elbow) Knee Interphalangeal Talocrural (ankle)	Barrel-shaped process fits inside a trough- like cup.	One axes One axes One axes Multiple axes
Pivot	Atlantoaxial Proximal radioulnar Distal radioulnar	Peg in a hole.	Rotation Rotation Rotation
Biaxial			Along two axes
Saddle		Two saddle-shaped turned 90° to each other.
Conyloid		Oval shaped extension (condyle) fits into elliptical socket.
Mulitaxial			Around many axes
Ball and Socket	Coxal (hip) Glenohumeral (shoulder)	Self-explanatory.	Multiple axes Multiple axes
Gliding		Two flat surfaces rubbing together.

11. Flex your arm at the elbow (bring your wrist toward yourshoulder).

1. How many axes is your elbow able to movethrough?

2. Write ‘elbow’ into the appropriate box in the example column of model2.

12. Look to your left. Now look to your right. Now to the left again. What kind of joint isyour head sitting on? Write it in the appropriate box in the example column of model2.

13. Condyloid joints can move quite far in one plane, but only a small way in the opposite plane. Flex and extend your wrist (out your arm in from of you and point your fingers to the ceiling and then to the floor). Then point your arm straight out and move your hand right to left at thewrist.

1. Does your wrist move as far side-to-side as it did up anddown?

1. Does this suggest that the wrist joint is condyloid or ball andsocket?

2. Write the word ‘wrist’ in the appropriate box in the example column of model2.

14. Look at this picture of the joint between the 1st metacarpal of the thumb and thetrapezius

bone, then move your thumb around. Write the word ‘thumb’ in the appropriate box in the example column of model 2.

15. Move your shoulder around. Based on its mobility, place ‘shoulder’ in the appropriate box in the example column of model2.

16. The bones of your ankle are small and flat. Move your ankle through its entire range of motion. Based on the nature of the bones, the mobility of your ankle, and the fact that there is only one box left, write the word ‘ankle’ in the appropriate box in the example column of model 2.

Model 3: Range of motion

 

 

 

 

 

 

 

 

 

 

 

 

 

17. Using model 3, fill in the column labeled ‘Movement’ in model 2 with one or more of the followingterms:

• Flexion
• Extension
• Adduction
• Abduction
• Rotation
• Circumduction

Memorization fact:

Circumduction means to move a part so that its distal end moves in a circle. For example if you hold your arm completely extended and draw a circle with your fingers, that is circumduction.

Application

18. For each of the joints listed below, classify it as a synarthrosis, amphiarthrosis, or diarthrosis. If it is a diarthrosis, further classify it as a hinge, pivot, saddle, condyloid, ball and socket, or gliding joint and describe is range of motion. Use the back of thispage.

Hip	Knee	Cranial sutures	Pubic symphysis	Phalangeal (toes)
Vertebral (between the bodies)	Vertebral (between the articular processes)	Jaw	Tibulo-fibular	Tooth-jawbone