Chapter 10 The Muscular System

Helpfulness: 0
Set Details Share
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

What are the 4 functional group classifications of muscle?

agonist

antagonist

synergist

fixators

2

How are skeletal muscles named?

by location, shape, size, direction of muscle fibers, number of origins, location of attachments, muscle action

3

What are the 4 main arrangements of fascicles?

circular, convergent, parallel, pennate

4

What is a lever?

rigid bar that moves on a fixated point (bone)

5

What is a fulcrum?

the fixed point (joint)

6

What is the effort?

the source that is applied to a lever (muscle)

7

What is the load?

the resistance that is moved (bone, tissue, objects being moved)

8

What do lever do?

they also given effort to move a heavier load; move a load further or faster

9

What is mechanical advantage?

power lever

load is close to the fulcrum

large load over small distance

10

What is mechanical disadvantage?

speed load

load far from fulcrum

load moves rapidly over long distance and wide rang of motion

11

What are the muscle used in mastication?

Temporalis, masseter - jaw closure

medial and lateral pterygoids - grinding movement

buccinator - chewing

12

What are the muscles of the erector spine (sacrospinalis)?

iliocostalis

longissimus

spinalis