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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 - FAR (isometric)
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A lever in the which the force acting on the lever is in between the fulcrum and the resistance is called a _______
third class lever - AFR (concentric)
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A lever in the which the resistance acting on the lever is in between the fulcrum and the force is called a ______
second class lever - ARF (eccentric)
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When you perform the concentric contraction phase of a biceps curl, the forearm functions as a _______
third class lever - (AFR) concentric
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When you perform the eccentric contraction phase of a biceps curl, the forearm functions as a ______
second class lever - ARF (eccentric)
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The joint that allows sliding planar movements between articulating bone surfaces is called ______
gliding joints
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A joint which has the following characteristics "uniaxial, sagittal plane, medial-lateral axis" would be called a(n) ________ joint.
hinge
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A joint which has the following characteristics (uniaxial, transverse plane, longitudinal axis) would be called a(n) _______ joint.
pivot
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A joint which has the following characteristics "biaxial, one convex bone surface, one concave bone surface" would be called a(n) ______ joint.
ellipsoidal
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A joint which has the following characteristics "biaxial, two concave bone surfaces" would be called a(n) ________ joint.
saddle
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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
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Functionally, the elbow joint is a(n) _______ joint.
hinge
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Functionally, the shoulder joints and the hip joints are ______ joints.
ball and socket
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Functionally, the radioulnar joints are ______ joints.
pivot
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Which of the following are characteristics of synovial joints?
- articular capsule
- -sleeve of ligamentous tissue
- -forms a joint cavity
- synovial membrane
- -inner surface lining of the articular capsule
- -secretes synovial fluid, which fills the joint cavity
- articular cartilage
- -hyaline
- -fibrocartilage
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Which of the following are functions of synovial fluid?
lubricant
reduces friction
nutrient
cleanser
hydrostatic shock absorber
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Which of the following are functions of articular cartilage?
improve bone-to-bone fit at joint
increase joint stability
reduce pressure when joint is loaded
reduce friction and prevents wear
some shock absorption
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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
Increasing tension stability
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Which of the following is not a factor that affects joint flexibility (i.e., range of motion)?
articulating bones
ligaments
bulkiness of soft tissues
friction within the joint
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