Question

1 a synarthrosis is defined as a a. joint that allows no motion. b. joint that is freely movable. c. joint with multiple axes of motion. d. joint that allows some motion. 2 the main function of a cartilaginous joint is to a. allow motion to occur between two bones. b. provide stability between two bones. c. unite two bones with dense irregular connective tissue. d. allow some motion while still providing stability between two bones. e. unite two bones with a synovial cavity. 3 how does a synovial joint differ from cartilaginous and fibrous joints? a. in a synovial joint, the ends of the articulating bones are covered in dense irregular connective tissue. b. in a synovial joint, the articulating bones are united by a fibrocartilage pad. c. in a synovial joint, the articulating bones are united by collagen fibers. d. in a synovial joint, the articulating bones are separated by a fluid - filled joint cavity. 4 which of the following describes a plane joint correctly? a. one bone fits into a concave articular surface of another bone. b. one bone rotates around another bone. c. the flat articular surfaces of two bones glide past one another. d. the rounded, ball - like end of one bone fits into a concave depression of another bone. 5 true/false: mark the following statements as true (t) or false (f). if the statement is false, correct it to make it a true statement. a. articular discs improve the fit of two bones. b. bursae are collagenous cords that generally connect a muscle to a bone. c. the joint capsule of a synovial joint is lined with a serous membrane. d. articular cartilage provides a smooth, nearly frictionless surface for articulation. e. tendon sheaths are specialized, elongated bursae that surround tendons subject to a great deal of friction. 6 an example of a biaxial joint is the a. vertebrocostal joint. b. hip joint. c. wrist joint. d. intercarpal joint.

Explanation:

1. A synarthrosis is an immovable joint by definition.
2. Cartilaginous joints mainly offer stability between bones.
3. Synovial joints have a fluid - filled joint cavity separating articulating bones, which is different from cartilaginous and fibrous joints.
4. In a plane joint, the flat articular surfaces of two bones glide past one another.

5.

• a. Articular discs do improve the fit of two bones.
• b. Bursae are fluid - filled sacs, not collagenous cords connecting muscle to bone (tendons do that).
• c. The joint capsule of a synovial joint is lined with a synovial membrane (not serous membrane).
• d. Articular cartilage provides a smooth, nearly frictionless surface for articulation.
• e. Tendon sheaths are specialized, elongated bursae around tendons with high friction.

1. The wrist joint is a biaxial joint allowing movement in two planes.

Answer:

1. A. joint that allows no motion.
2. B. provide stability between two bones.
3. D. In a synovial joint, the articulating bones are separated by a fluid - filled joint cavity.
4. C. The flat articular surfaces of two bones glide past one another.

5.

• a. T
• b. F. Bursae are fluid - filled sacs that reduce friction between adjacent structures. Tendons are collagenous cords that generally connect a muscle to a bone.
• c. F. The joint capsule of a synovial joint is lined with a synovial membrane.
• d. T
• e. T

1. C. wrist joint.