13 Rules of Skeletal Muscle Activity

Question 1

1

Answer 1

Muscles have at least 2 points of attachment- an origin that stays stationary and an insertions that moves

Question 2

2

Answer 2

Muscles that attach either by tendons or fleshy connections

Question 3

3

Answer 3

Muscles must cross at least one joint to create movement (face is an exception)

Question 4

4

Answer 4

Muscles shorten as they contract

Question 5

5

Answer 5

Muscles only pull

Question 6

6

Answer 6

Muscles work in antagonistic pairs

Question 7

7

Answer 7

Muscle fibers or tendons ultimately go in the direction of the pull

Question 8

8

Answer 8

Flexors are on the ventral surface and extensors are on the dorsal surface

Question 9

9

Answer 9

Muscles shape the bones

Question 10

10

Answer 10

Muscles that cross one joint are deep and are for power, muscles that cross many joints are superficial and are for speed and agility

Question 11

11

Answer 11

muscles for speed have parallel fibers (down hill) and muscles for power have fibers that run diagonally at an angle to the length (snow-plow)

Question 12

12

Answer 12

Small muscles create subtle movement; big muscles create gross movements

Question 13

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Answer 13

Muscles are named for a variety of reasons: Size, shaped, direction of fibers, function/action, origin/insertion, combination