Nursing Fundamentals Vol. 1: Chapter 31
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The American College of Sports Medicine (ACSM) recommends what time range of exercise per week to prevent weight gain and chronic illness? how much time do they recommend you spend to achieve weight loss?
150 - 250 minutes
More than 250 minutes a week to achieve significant weight loss: that is, 50 minutes 5 days a week or 40 minutes 6 days a week.
Mobility depends on successful interaction among what 3 systems?
- The skeleton
- The muscles
- The nervous system
When two bones come close together, or _____, a joint is formed. What occurs at the joints?
_____ are immoveable joints, such as the sutures between the cranial bones.
_____ allow for limited movement, like the joints between the vertebrae and pubic bones.
______ are freely moveable because of the amount of space between the articulating bones. What allows this kind of movement?
- Diarthroses (synovial joints)
- Synovial fluid fills diarthroses and the joint surfaces of articulating bones are covered with smooth articular cartilage, which work to prevent friction as the body moves.
What are the 6 types of synovial joints (diarthroses)?
Match the type of diarthrosis to its descriptor:
Ball and Socket
A. An oval shaped bone fits into an elliptical cavity to allow movement in two planes at right angles to each other (i.e. the wrist).
B. A convex surface fits into a cavity, allowing flexion and extension (i.e knee and elbow)
C. Two flat plane surfaces move past each other (i.e intervertebral joints)
D. A rounded head fits into a cup-like structure to allow movement in all planes in addition to rotation (i.e Shoulder and hip)
E. One bone surface is concave in one direction and convex in the other. The other surface has the opposite construction so that the bones fit together. Movement is possible in two planes at right angles to each other. (i.e. carpal, metacarpal joint of the thumb)
F. The joint is formed by a ringlike object that turns on a pivot. Motion is limited to rotation (ie the atlas and axis of the first vertebrae and base of the skull).
- A. Condyloid
- B. Hinge
- C. Gliding
- D. Ball and Socket
- E. Saddle
- F. Pivot
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