Anatomy Lab
16
©Hands-Onc om
Experim
Joints and Body e xe
R
ci s e 3: Q ue s t i o ns
A. Which type of synovial joint has the least amountof movement?SynarthrosisB. Why are diarthroses important for synovial joints?Diarthroses are synovial joints where two bones are bound together bya joint capsule, forming a joint cavity. Synovial fluid is found in synovial joints.C. Which synovial joint is most movable?
Diarthrosis
D. What are the four structural characteristics that all synovial joints share?
1. Two-layered articular capsule2. Synovial membrane3. Hyaline cartilage4. Bursae e xe R ci s e 4: Q ue s t i o ns A. Which of the body movements was the most difficult to perform? Why? The hip rotation was the most difficult because of the limited range of motion.
B. Hinge joints like the elbow and knee have limited movement. Why arethese types of joints more prone to injury?
Because they can only move in two directions – if force is applied from another direction, it willresult in injury.
C. When performing flexion on the arm, the biceps muscle (on the anteriorof the arm) contracts. What happens to the triceps muscle (on the posteriorof the arm) as this action is performed? They retract as this happens.
16
©Hands-Onc om
Experim
Joints and Body
D. Both the shoulder and the hip are ball and socket joints. Why does theshoulder have a greater range of motion than the hip? The hip joint is much deeper than the shoulder joint. The hip joint was meant to be stable for itsweightbearing function, while the shoulder joint was meant for motility. e xe R ci s e 5: o b s e R v a t i o ns Sketch your chicken wing: Label the bones, muscles, tendons and joints. e xe R ci s e 5: Q ue s t i o ns A. What effect will the tearing of a tendon have on its corresponding muscle? The corresponding muscle will shrink because of the decreased tendon
©Hands-Onc om
Experim
Joints and Body e xe
R
ci s e 3: Q ue s t i o ns
A. Which type of synovial joint has the least amountof movement?SynarthrosisB. Why are diarthroses important for synovial joints?Diarthroses are synovial joints where two bones are bound together bya joint capsule, forming a joint cavity. Synovial fluid is found in synovial joints.C. Which synovial joint is most movable?
Diarthrosis
D. What are the four structural characteristics that all synovial joints share?
1. Two-layered articular capsule2. Synovial membrane3. Hyaline cartilage4. Bursae e xe R ci s e 4: Q ue s t i o ns A. Which of the body movements was the most difficult to perform? Why? The hip rotation was the most difficult because of the limited range of motion.
B. Hinge joints like the elbow and knee have limited movement. Why arethese types of joints more prone to injury?
Because they can only move in two directions – if force is applied from another direction, it willresult in injury.
C. When performing flexion on the arm, the biceps muscle (on the anteriorof the arm) contracts. What happens to the triceps muscle (on the posteriorof the arm) as this action is performed? They retract as this happens.
16
©Hands-Onc om
Experim
Joints and Body
D. Both the shoulder and the hip are ball and socket joints. Why does theshoulder have a greater range of motion than the hip? The hip joint is much deeper than the shoulder joint. The hip joint was meant to be stable for itsweightbearing function, while the shoulder joint was meant for motility. e xe R ci s e 5: o b s e R v a t i o ns Sketch your chicken wing: Label the bones, muscles, tendons and joints. e xe R ci s e 5: Q ue s t i o ns A. What effect will the tearing of a tendon have on its corresponding muscle? The corresponding muscle will shrink because of the decreased tendon