Muscular System

Question 1

Describe skeletal muscle tissue

Answer 1

Single very long cylindrical cells, multinucleate, striated

Question 2

What is a sarcomere?

Answer 2

The contractile bait of muscle between two z discs

Question 3

What powerful sucking muscle is developed in nursing infants?

Answer 3

Buccinator

Question 4

What muscle is the antagonist of the biceps brachii?

Answer 4

Triceps brachii

Question 5

What are the structures that make up a skeletal muscle?

Answer 5

Fascicle, muscle fiber, myofibril, sarcomere, myofilament

Question 6

What is the “thick filament” composed of?

Answer 6

Myosin protein

Question 7

What muscle tissue has involuntary control?

Answer 7

Cardiac muscle and smooth muscle

Question 8

Describe cardiac muscle

Answer 8

Uninucleate cells, striations, involuntary, rhythmic contractions

Question 9

During skeletal muscle contraction, what do the myosin cross bridges attach to?

Answer 9

Active sites of the actin filament

Question 10

What function do calcium ions perform during skeletal muscle contraction?

Answer 10

Expose myosin binding sites on actin

Question 11

What is the neurotransmitter that stimulates skeletal muscle?

Answer 11

Acetylcholine

Question 12

What does anaerobic mean?

Answer 12

Without oxygen