Ch. 11 Vocab

Question 1

a muscle responsible for a specific movement

Answer 1

agonist

Question 2

a process where aging skeletal muscles develop increasing amounts of fibrous connective tissue

Answer 2

fibrosis

Question 3

the fascicles are parallel to the long axis of the muscle

Answer 3

parallel muscle

Question 4

muscle fascicles extending over a broad area converge on a common attachment site

Answer 4

convergent muscle

Question 5

the fascicles form a common angle with the tendon

Answer 5

pennate muscle

Question 6

a muscular ring that contracts to close the entrance or exit of an internal passageway

Answer 6

circular muscle/sphincter

Question 7

a point of attachment of a muscle

Answer 7

insertion

Question 8

In a skeletal muscle, the point of attachment which does not change position when the muscle contracts

Answer 8

origin

Question 9

a rigid structure that moves on a fixed point when an applied force is sufficient to overcome any load or resistance that would otherwise oppose or prevent such movement

Answer 9

lever

Question 10

fixed point that the lever moves around

Answer 10

fulcrum

Question 11

a muscle that assists a prime mover in performing its primary action

Answer 11

synergist

Question 12

synergist that assists an agonist by preventing movement at another joint and thereby stabilizing the origin of the agonist

Answer 12

fixator

Question 13

a muscle that opposes the movement of an agonist

Answer 13

antagonist