chapter 11

Question 1

the muscular system makes up how much of a persons body weight?

Answer 1

44 percent

Question 2

axial muscles

Answer 2

support and position the axial skeleton

Question 3

appendicular muscles

Answer 3

support, move and brace the limbs

Question 4

origin

Answer 4

the fixed attachment

Question 5

insertion

Answer 5

attachment that moves towards the origin

Question 6

parellel muscles

Answer 6

fascicles run parallel to the long axis of the muscles

Question 7

parellel muscles have a

Answer 7

high endurance

Question 8

the biceps brachii is an example of what muscle?

Answer 8

parallel

Question 9

convergent muscles

Answer 9

fascicles extend over a broad area and converge to a common attachment

Question 10

what can change direction of pull?

Answer 10

stimulation of different fiber

Question 11

why do convergent muscles not pull as hard as parallel muscles of equivalent size?

Answer 11

some fibers may be working against each other

Question 12

the pectoralis major is

Answer 12

an example of convergent muscles

Question 13

pennate muscle

Answer 13

fascicles form a common angle to their tendon

Question 14

what is the appearance of pennate muscles?

Answer 14

feather

Question 15

is it true pennate muscles are stronger than parallel muscles?

Answer 15

yes

Question 16

unipennate

Answer 16

1 angle of pull

Question 17

bipennate

Answer 17

2 angles of pull

Question 18

multipennate

Answer 18

3 angles of pull

Question 19

sphincter muscles

Answer 19

fascicles are arranged in a circle around an opening or recess.

Question 20

when sphincter muscles contract the

Answer 20

opening decreases

Question 21

an example of sphincter muscles is

Answer 21

orbicularis oris

Question 22

agonist

Answer 22

prime mover. produces the desired movement

Question 23

antagonists

Answer 23

opposes the agonist

Question 24

in order for the desired movement to occur what must happen?

Answer 24

the antagonist must stretch

Question 25

an example of an agonist is the?

Answer 25

biceps brachii, flexes forearm

Question 26

an example of an antagonist is the?

Answer 26

triceps brachii, extends the forearm

Question 27

synergist

Answer 27

helper, aides the agonist as its contraction allows the agonist to work mote efficiently

Question 28

muscles named for location

Answer 28

name includes body region

Question 29

examples of muscles named for location

Answer 29

brachioradialis | tibialis anterior

Question 30

muscles named for shape

Answer 30

1. deltiod-triangle 2. trapezius-trapezoid 3. longus-long 4. brevis-short

Question 31

examples of muscles named for shape

Answer 31

trapezius deltoid extensor carpi radialis longus

Question 32

major

Answer 32

larger of 2

Question 33

minor

Answer 33

smaller of 2

Question 34

maximus

Answer 34

largest

Question 35

minimus

Answer 35

smallest

Question 36

medius

Answer 36

medium size

Question 37

examples of muscles named for size

Answer 37

gluteus maximus | teres major

Question 38

rectus

Answer 38

straight

Question 39

oblique

Answer 39

angled

Question 40

orbicularis

Answer 40

circle

Question 41

examples of muscles named for direction of fibers

Answer 41

rectus abdominus external oblique obicularis oris

Question 42

heads are?

Answer 42

tendons of origin

Question 43

biceps

Answer 43

2 heads

Question 44

triceps

Answer 44

3 heads

Question 45

quadriceps

Answer 45

4 heads

Question 46

name for attachment

Answer 46

name will include bone or bony features of origin/insertion. ex. sternocliemastoid

Question 47

flexor

Answer 47

flexes joint

Question 48

extensor

Answer 48

extends joint

Question 49

adductor

Answer 49

adducts joint

Question 50

pronator

Answer 50

pronates joint

Question 51

supinator

Answer 51

supinates joint

Question 52

example of muscles named for action

Answer 52

supinator pronator teres extensor digitorum adductor longus