Chapter 10 Part 1

Question 1

What is a rigid bar that moves on a fulcrum, or fixed point?

Answer 1

Lever

Question 2

What is the force applied to a lever called?

Answer 2

Effort

Question 3

What is the resistance moved by the effort?

Answer 3

Load

Question 4

What is the point on which a lever rests or pivots called?

Answer 4

Fulcrum

Question 5

Do muscles pull or push?

Answer 5

Muscles only PULL, they never push

Question 6

As muscles shorten, the _______ generally mvoes toward the _______.

Answer 6

As muscles shorten, the insertion** generally moves toward the **origin.

Question 7

What are the 4 functional groups of muscles?

Answer 7

FSAP!!!

1. ) Fixators
2. ) Synergists
3. ) Antagonists
4. ) Prime Movers

Question 8

According to functional groups, what type of muscles provide the major force for producing a specific movement?

Answer 8

**Prime Movers **provide the major force for producing a specific movement

Question 9

According to functional groups, what type of muscles oppose or reverse a particular movement?

Answer 9

Antagonists oppose or reverse a particular movement

Question 10

According to functional groups, what type of muscles add force to a movement or reduce undesirable or unneccessary movement?

Answer 10

Synergists add force to a movement or reduce undesirable or unneccessary movement

Question 11

According to functional groups, what type of muscles are synergists that immobilize a bone or a muscle’s origin?

Answer 11

Fixators are synergists that immobilize a bone or a muscle’s origin

Question 12

What are the 7 factors that contribute to the naming of skeletal muscles?

Answer 12

4 Factors of Naming of Skeletal Muscles

R *LSD *LAN

1. ) Relative size
2. ) Location of muscle
3. ) Shape of muscle
4. ) Direction of fibers
5. ) Location of attachments
6. ) Action
7. ) # of origins