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19 Cards in this Set

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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

First class lever

A lever in which the force acting on the lever is in between the fulcrum and the resistance is called a

Third class lever

A lever in which the resistance acting on the lever is in between the fulcrum and the force is called a


Second class lever


When you perform the concentric contraction phase of a biceps curl, the forearm functions as a

Third class lever

When you perform the eccentric contraction phase of a biceps curl, the forearm functions as a

First class lever

The joint that allows sliding planar movements between articulating bone surfaces is called

Gliding joint

A joint which has the following characteristics "uniaxial, sagittal plane, medial-lateral axis" would be called a(n) _____ joint.

Hinge joint

A joint which has the following characteristics "uniaxial, transverse plane, longitudinal axis" would be called a(n) ______ joint

Pivot joint

A joint which has the following characteristics "biaxial, one convex bone surface, one concave bone surface" would be called a(n) _____ joint.

Saddle joint

A joint which has the following characteristics "biaxial, two convex bone surfaces" would be called a(n) _____ joint.

Elipsoidal joint

A joint which has the following characteristics "triaxial, one convex bone surface, one concave bone surface" would be called a(n) ______ joint.

Ball in socket joint

Functionally, the elbow joint is a(n) _____ joint.

Hinge joint

Functionally, the shoulder joints and the hip joints are ______ joints.

Ball and socket joints

Functionally, the radioulnar joints are ______ joints.

Pivot joints

Which of the following are characteristics of synovial joints?

-Bones connected by ligaments


-Separated by a joint cavity that encloses the space between the bones


-Highly mobile joints


-Articular capsule


-Secretes synovial fluid, which fills the joint cavity

Which of the following are functions of synovial fluid?

-Lubricant (reduces friction)


-Nutrient
(nourishes the articular cartilage which has no blood supply)


-cleanser


-Hydrostatic shock absorber

Which of the following are functions of articular cartilage?

-Improve Bone-to-Bone fit


-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 increase joint stability?

-Increasing Shear Stability


-Bone-on-Bone Compression


-Reciprocal convex and concave shapes of the articulating ends of bones


-Articular Cartilage


-Fibrocartilage

Which of the following is not a factor that effects joint flexibility? (i.e. range of motion)

Factors that Limit Flexibility:


-Articulating Bones, The shapes of the articulating bones may limit range of motion


-Shortening and/or twisting of ligaments


-Friction within the Joint, Any wearing or damage to the articular cartilage increases joint friction