Biomechanics Quiz Questions Skeletal Functions.txt
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A lever in which the fulcrum is located in between the force acting on the lever and the resistance is called a ________
A lever in the which the force acting on the lever is in between the fulcrum and the resistance is called a _______
A lever in the which the resistance acting on the lever is in between the fulcrum and the force is called a ______
When you perform the concentric contraction phase of a biceps curl, the forearm functions as a _______
When you perform the eccentric contraction phase of a biceps curl, the forearm functions as a ______
The joint that allows sliding planar movements between articulating bone surfaces is called ______
A joint which has the following characteristics "uniaxial, sagittal plane, medial-lateral axis" would be called a(n) ________ joint.
A joint which has the following characteristics (uniaxial, transverse plane, longitudinal axis) would be called a(n) _______ joint.
A joint which has the following characteristics "biaxial, one convex bone surface, one concave bone surface" would be called a(n) ______ joint.
A joint which has the following characteristics "biaxial, two convex bone surfaces" would be called a(n) ________ joint.
A joint which has the following characteristics "triaxial, one convex bone surface, one concave bone surface" would be called a(n) ______ joint.
ball and socket
Functionally, the elbow joint is a(n) _______ joint.
Functionally, the shoulder joints and the hip joints are ______ joints.
Functionally, the radioulnar joints are ______ joints.
Which of the following are characteristics of synovial joints?
Structure of Synovial Joints
- articular capsule
- -sleeve of liamentous tissue
- -forms a joint cavity
- synovial membrane
- -inner surface lining of the articular capsule
- -secretes synovial fluid, which fills the joint cavity
- Has two types of articular cartilage
- improves the bone-to-bone fit at the joint
- -increasing the joint's stability
- -reducing pressure when the joint is loaded
- reduce friction and prevents wear
- provide some shock absorption
Which of the following are functions of synovial fluid?
lubricant - reduces friction
nutrient - nourishes the articular cartilage which has no blood supply
hydrostatic shock absorber
Which of the following are functions of articular cartilage?
hyaline cartilage - thin layer of cartilage that covers the articulating ends of the bones
fibrocartilage - disc or partial disc of fibrocartilage that separates the articulating surfaces of the bones (the bearing surfaces between the moving bones)
Which of the following increase joint stability?
Increasing Shear Stability
bone-on-bone compression - increases friction
reciprocal convex and concave shapes of the articulating ends of bones - tighter the bone-to-bone fit
articular cartilage - improves bone-to-bone fit
fibrocartilage - produce convex regions
Which of the following is not a factor that affects joint flexibility (i.e., range of motion)?
articulating bones - the shapes of the articulating bones may limit range of motion
ligaments - shortening and/or twisting of ligaments can limit range of motion
bulkiness of soft tissues - a person with larger muscles or large amounts of fatty tissue
friction within the joint - any wearing or damage to the articular cartilage increases joint friction
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