Chapter 3 Flashcards
1
Q
Biomechanics
A
study of mechanics in relation to functional and anatomical systems. Divided into static and dynamic
2
Q
Statics
A
study of systems that are in constant motion
3
Q
Dynamics
A
systems in motion with acceleration
4
Q
Kinematics
A
description of motion, displacement and velocity
5
Q
3 types of machines in human body
A
Levers
Wheel axles
Pulleys
6
Q
Components of a lever
A
Lever- rigid bar (bones)
Axis- point of rotation (joints)
Force (muscles)
7
Q
3 class of levers and which is most common?
A
- Balanced movements between force and resistance (FA=axisR)
- Small movements with resistance between axis and force (RAF)
- Speed and range of motion with force between axis and resistance (FAR)
8
Q
Example of first class lever
A
Triceps in elbow extension
9
Q
Example of second class lever
A
plantar flexion to raise body
10
Q
Example of third class
A
biceps brachii in elbow flexion. ie. shovelling
11
Q
Equation of force
A
F=M x A
12
Q
Examples of force that can cause deformation
A
Tension, Compression Shear Bending Twisting
