Exm 3 (ch 11)

Question 1

Dominant muscle (prime mover)

Answer 1

Agonist ex: brachius

Question 2

Relax to allow for movement 

Answer 2

Antagonist ex: trachius

Question 3

Assist with movement in the same direction as the prime mover and help guide movement 

Answer 3

Synergist ex:brachialis

Question 4

Attaches muscle to bone

Answer 4

Tendon

Question 5

Attaches bones to bones

Answer 5

Ligaments

Question 6

Ligaments and tendons are made out of the same material

Answer 6

Dense regular connective tissue 

Question 7

the attachment to the stationary
bone, muscle arises from here

Answer 7

Origin

Question 8

the attachment to the moveable
bone

Answer 8

Insertion

Question 9

fleshy portion between the tendons

Answer 9

Belly

Question 10

of muscle are the main movements that occur when the muscle contracts

Answer 10

Actions

Question 11

The pivot system (the joints)

Answer 11

Fulcrums

Question 12

What serves as levers

Answer 12

Bones

Question 13

Opposes movement. Weight of object/resistance.

Answer 13

Load

Question 14

force of muscle contraction at
insertion.

Answer 14

Effort

Question 15

fulcrum(joint) is between the effort(muscle) and the resistance(load)
• Ex: teeter totter or see-saw
ex: raising head or face
• effort(muscle)->fulcrum(joint)->load

Answer 15

First class lever

Question 16

resistance(load) is between the fulcrum(joint) and the effort(muscle)
• Ex: wheelbarrow
• effort(handles)->load(bucket)-> fulcrum(wheel)
• Raising the balls of the feet

Answer 16

Second class lever

Question 17

effort(muscle) between the fulcrum(joint) and the resistance(load)
• Ex: Bicep curl
fulcrum->effort->load

Answer 17

Third class lever (most common)

Question 18

fibers run parallel to each other
• Ex: frontalis muscle

Answer 18

Fasciculi(parallel)

Question 19

fibers run parallel to each other but taper off at the ends
• Ex: biceps brachii

Answer 19

Fushiform

Question 20

muscle fascicles in concentric circular arrangements form a
sphincter muscle that encloses and orifice (opening)
• Ex: orbicularis oculi muscle

Answer 20

Circular

Question 21

broad origin and narrow insertion (convergent or triangular)
ex: subscapularis or pectoralis major

Answer 21

Triangular

Question 22

arrangements are feather-like and has fascicles that are short compared to length of the tendon(tendon extends nearly the
entire length)

Answer 22

Pennate

Question 23

muscle has fascicles on only one side (extensor digitorum)

Answer 23

Unipennate

Question 24

muscle fascicles are on both sides of the centrally positioned tendons (rectus femoris and deltoid)

Answer 24

Bipennate and multipennate