exercise 13: gross anatomy of the muscular system

Question 1

4 types of muscles

Answer 1

prime movers
synergist
antagonist
fixator

Question 2

define prime movers (agonist)

Answer 2

responsible for producing a particular movement

Question 3

define antagonist

Answer 3

oppose or reverse a movement

Question 4

define synergist

Answer 4

aide the action of agonist by assiting with the movemetn or reducing unwanted movement

Question 5

define fixator

Answer 5

specialized synergist
immobilize the origin of prime move so the tension goes back to the insertion

Question 6

directions of muscle fibers

Answer 6

convergent (pectoralis major)
circular (obicularis oris/oculi)
fusiform (biceps brachii)
parallel (sartorious)
multipenate ( deltoid)
bipennate (rectus femoris)
unipennate (extensor digitorumvlongus)

Question 7

muscle that allow you to smile

Answer 7

zygomaticus

Question 8

muscle that allows you to pucker

Answer 8

obicularis oris

Question 9

muscle that allows you to pout

Answer 9

mentalis

Question 10

muscle that tense neck

Answer 10

platysma

Question 11

muscles that allow blinking

Answer 11

obicularis oculi

Question 12

muscles that allow angry eyebrows

Answer 12

corugator supercili

Question 13

muscles that allow raised eyebrows

Answer 13

frontal belly of occipital