Biomechanics

Question 1

Biomechanics

Answer 1

Study of the mechanics as it relates to the functional and anatomical analysis of biological systems and especially humans

Question 2

Machines

Answer 2

used to increase mechanical advantage

Question 3

What are the 3 functions of machines?

Answer 3

1. They balance multiple forces
2. Enhance force in attempt to reduce total force needed
3. They enhance range of motion and speed

Question 4

The musculoskeletal system provide…?

Answer 4

proved 3 types of machines in order to produce movement

Question 5

What are the 3 types of machines the Musculoskeletal system provide?

Answer 5

-levers (most common)
-wheel-axles
-Pulleys

Question 6

What are the 3 types of levers?

Answer 6

A = axis = joint
F = force = muscle AND insertion point
R = resistance

Question 7

What letter is always in the middle on a 1st class lever?

Answer 7

A = axis (joint)

Question 8

What letter is always in the middle of a 2nd class lever?

Answer 8

R = resistance

Question 9

What letter is always in the middle of a 3rd class lever?

Answer 9

F = force (muscle and insertion point)

Question 10

Which lever is the most common in the human body?

Answer 10

3rd class lever

Question 11

Whats an example of a 3rd class lever?

Answer 11

Bicep curls and Knee extension
(Write down the A.F.R. for muscle memory)

Question 12

Whats an example of a 1st class lever?

Answer 12

Overhead extension
(Write down the A.F.R. for muscle memory)

Question 13

Whats an example of a 2nd class lever?

Answer 13

Heel raises
(Write down the A.F.R. for muscle memory)

Question 14

Force Arm

Answer 14

distance between the force and the axis

Question 15

Resistance Arm

Answer 15

distance between resistance and axis

Question 16

Law of inertia

Answer 16

a body in motion tends to remain in motion at the same speed in a straight line unless acted on by a force; a body at rest tends to stay at rest unless acted in by a force

Question 17

Inertia

Answer 17

resistance to action or change

Question 18

T/F: Poor form and technique make it difficult to overcome inertia

Answer 18

true

Question 19

What is required to change inertia?

Answer 19

force

Question 20

Law of reaction

Answer 20

for every action there is an opposite and equal reaction

Question 21

Friction

Answer 21

force that results from the resistance between surfaces of two objects from moving upon one another

Question 22

Center of gravity

Answer 22

point at which all of body’s mass and weight are equally balanced. or equally distributed in all directions

Question 23

Balance

Answer 23

important in resting and moving bodies

Question 24

Mechanical loading

Answer 24

significant mechanical load are generated and absorbed by the tissues of the body

Question 25

Excessive tissue deformation due to mechanical loading may result from…

Answer 25

tension, shear, compression, bending, and torsion