Chapter 11: The Muscular System

Question 1

How are muscles named?

Answer 1

Muscle names are descriptive.
Location
Action
Shape
Relative size
Direction of fibers
Number of Origins
Location of Attachment

Question 2

How many muscles foes the muscular system consist of?

Answer 2

Nearly 700 muscles

Question 3

Levers

Answer 3

Each bone is a lever, and each joint is a fulcrum (F) which is a fixed point.
Muscles provide applied force (AF) that is required to overcome load (L)

Question 4

First Class Lever

Answer 4

Fulcrum (F) lies between force (AF) and load (L)

Example: joint at the top of the neck

Question 5

Second Class Lever

Answer 5

Load (L) lies between applied force (AF) and Fulcrum (F)

Example: ball of foot

Question 6

Third Class Lever

Answer 6

Applied force (AF) between load (L) and fulcrum (F)

Example: elbow

Question 7

Agonist

Answer 7

Produces a particular movement

Question 8

Antagonist

Answer 8

Opposes the movement of a particular agonist

Question 9

Synergist

Answer 9

A smaller muscle that assists a larger agonist

Question 10

Agonist and Antagonist work in _______.

Answer 10

Pairs