Biomechanics- Forces and Physics

Description

Information from Lecture 13 of Biomechanics
Robin Sommerfeld
Quiz by Robin Sommerfeld, updated more than 1 year ago
Robin Sommerfeld
Created by Robin Sommerfeld over 6 years ago
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Resource summary

Question 1

Question
Label the forces that act in a biological system:
Answer
  • Tensile
  • Compression
  • Bending
  • Shear
  • Torsion
  • Combination

Question 2

Question
Kinematics is:
Answer
  • Analysis of motion in terms of acting forces
  • Description of movement without reference to force/mass
  • Description of bodies at equilibrium
  • A kind of static force system

Question 3

Question
Which of the following is a description of a concurrent force system?
Answer
  • Forces acting along the same line
  • 2 or more equal but opposite forces that cause rotation
  • Forces acting in the same plane, but along different lines
  • Forces acting at a common point, but in divergent directions

Question 4

Question
Flexion of the elbow is a biological example of what lever class?
Answer
  • First class lever
  • Second class lever
  • Third class lever
  • This is not a physics class lever

Question 5

Question
Label the lever class:
Answer
  • First class lever
  • Third class lever
  • Second class lever

Question 6

Question
Your client LOVES diet coke but since her injury does not have the strength required to open pop bottles. She has identified "being able to independently open a bottle cap on a coke bottle" as her most important goal. You decide to design an adaptive device that will help her with that task. What design would be the most helpful to her?
Answer
  • A socket type device that fits over the cap with a long handle
  • A socket type device that fits over the cap with a short handle
  • A socket type device that fits over the cap with a thick handle
  • A socket type device that fits over the cap with a handle that bends 90 towards the table

Question 7

Question
To decrease pressure, you can either [blank_start]increase[blank_end] surface area, [blank_start]decrease[blank_end] force or both.
Answer
  • increase
  • decrease
  • decrease
  • increase

Question 8

Question
You are at an increased risk of falling when you shift your center of gravity outside your base of support.
Answer
  • True
  • False

Question 9

Question
Which of the following is the most stable base of support?
Answer
  • One foot
  • Two feet
  • C cane
  • Quad cane

Question 10

Question
What biomechanical changes occur during pregnancy?
Answer
  • The added weight on the abdomen shifts the center of gravity
  • Counterbalancing the added weight puts more force on the low back
  • Feet swell in an effort to increase the base of support
  • Gait stance widens to increase the base of support
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