Chapter 9 Check Your Recall
Multiaxial
Allow motion in multiple planes
Uniaxial
Allow motion in one plane
Biaxial
Allow motion in two planes
d. joint that allows some motion.
An amphiarthroses is defined as a a. joint that allows no motion. b. joint that is freely moveable. c. joint with multiple axes of motion. d. joint that allows some motion.
Flexion
Decreasing the angle between two bones
Nonaxial
Does not move around an axis
Extension
Increasing the angle between two bones
Rotation
Movement around a central axis
Circumduction
Movement in a circle
Abduction
Movement of a body part away from the midline
Adduction
Movement of a body part toward the midline
Dorsiflexion
Movement of the ankle that decreases the angle between the foot and leg
b. joint capsule; synovial fluid
Synovial joints are surrounded by a/an ________________ and filled with _______________. a. articular disc; serous fluid b. joint capsule; synovial fluid c. articular cartilage; serous fluid d. articular disc; synovial fluid
b. provide stability between two bones.
The main function of a fibrous joint is to a. allow motion to occur between two bones. b. provide stability between two bones. c. unite two bones with cartilage. d. allow some motion while still providing stability between two bones. e. unite two bones with a synovial cavity
False; Articular cartilage
True or False: Articular discs provide a smooth, nearly frictionless surface for articulation.
False; Articular discs
True or False: Bursae improve the fit between two bones in a synovial joint.
False; bursae
True or False: Fluid-filled sacs called ligaments often lie between tendons and the joint capsule of a synovial joint.
True
True or False: The articulating ends of the bones in a synovial joint are covered by articular cartilage.
False; joint capsule
True or False: The tendon sheath of a synovial joint is lined with a synovial membrane.
Pronation
Turning the palm over to face down
b. One bone rotates around another bone.
Which of the following correctly describes a pivot joint? a. The convex articular surface of 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.
a. The convex articular surface of one bone fits into a concave articular surface of another bone.
Which of the following describes a hinge joint correctly? a. The convex articular surface of 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.
