Unit 5: Muscle Review

Question 1

What are the 4 functions of the muscular system?

Answer 1

Produces Movement- Locomotion of whole body and facial expressions
Maintains Posture- Working to keep us upright
Stabilizes Joints- Reinforcing the connections of bones
Generates Heat- Cellular respiration maintains body temperature

Question 2

Excitability

Answer 2

Respond to a stimulus from neuron or hormone

Question 3

Contractability

Answer 3

Can shorten when stimulated

Question 4

Extensibility

Answer 4

Can lengthen or stretch past original shape

Question 5

Elasticity

Answer 5

Ability to recoil or bounce back to original shape

Question 6

Skeletal

Answer 6

Striated, Voluntary, found in skeleton

Question 7

Cardiac

Answer 7

Striated, Involuntary, found in the heart

Question 8

Smooth

Answer 8

NonStraited, involuntary, found in GI tract

Question 9

What is the order of the microscopic structure of a muscle? Largest to smallest

Answer 9

Muscle, fascicle, muscle fiber, myofibril, myofilaments

Question 10

What is the belly of the muscle?

Answer 10

The middle of the muscle (main)

Question 11

What is the tendon?

Answer 11

Muscles are attached to bones by tendons

Question 12

What is the prime mover?

Answer 12

Muscle doing the action (contracting)

Question 13

Synergist?

Answer 13

Muscles helping the prime mover in the same direction

Question 14

What is the antagonist?

Answer 14

Opposing muscle relaxing during motion of prime mover