Chapter 11 Flashcards Preview

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Flashcards in Chapter 11 Deck (12):
1

Parallel Muscles

fascicles are parallel to the long axis of the muscle (bicep)

2

Convergent Muscles

fascicles extend over a broad area with one common attachment site, spread out like fam pulling in different direction (pectoral)

3

Pennate Muscles

fascicles form a common angle with the tendon, feather like

4

circular muscles

sphincters; fascicles are arranged around an opening, control the diameter of the opening

5

antagonistic muscles

muscles that have opposing functions (bicep, triceps) example: biceps contract the forearm. muscles can't push when relaxed, they exert no force. So, to extend the arm we need the "antagonist" to the biceps to extend it=triceps brachii

6

synergistic muscles

muscles that work together to accomplish the same movement, work together to stabilize a joint for a precise movement

7

prime mover

the muscle that does most of the work

8

naming based on location

name indicates bone or body region where muscle is located: temporal is on temporal bone

9

naming based on shape

name indicates the shape; deltoid

10

naming based on size

name reflects relative size, like: major, minor, etc... adductor

11

naming based on direction

name reflects direction of muscle fibers, like: rectus, oblique, transverse, etc... rectus abdomonis, eternal oblique

12

naming based on origins

name reflects number of origin or "heads" of the muscle: bi, tri, quad, like the flexor cari radials