Question

question 13 1 pts the structure of the knee joint permits movements of flexion and extension. flexion and circumduction. extension and circumduction. none of the above. question 14 1 pts exercise may cause an increase in muscle size called atrophy. hypertrophy. isometric. isotonic. question 15 1 pts some synovial joints contain a closed pillow - like structure called a(n) meniscus. ligament. bursa. articular cartilage.

Explanation:

• Question 13: The knee joint is a hinge - type joint. Hinge joints allow flexion (bending) and extension (straightening). Circumduction is a movement that involves a circular motion and is not a primary movement of the knee joint.
• Question 14: Atrophy is the decrease in muscle size. Hypertrophy is the increase in muscle size due to exercise. Isometric and isotonic are types of muscle contractions, not terms for muscle size changes.
• Question 15: A bursa is a closed, pillow - like structure in some synovial joints that reduces friction. A meniscus is a C - shaped fibrocartilage in the knee. A ligament is a fibrous connective tissue that connects bone to bone. Articular cartilage covers the ends of bones in joints.

Answer:

Question 13: flexion and extension.
Question 14: hypertrophy.
Question 15: bursa.