Muscular System Warm Up

Question 1

Describe skeletal muscle tissue.

Answer 1

-Single very long cylindrical cells
-Multi-nucleate
-Striated

Question 2

What is a sarcomere?

Answer 2

The contractile unit of muscle between to Z Discs

Question 3

What powerful sucking muscle is developed in nursing infants?

Answer 3

Buccinator

Question 4

What is the “thick filament” composed of?

Answer 4

Myosin protein

Question 5

What are the structures that make up a skeletal muscle?

Answer 5

-Fascicle
-Muscle Fiber (cell)
-Myofibril
-Sarcomere
-Myofilament

Question 6

What muscle is the antagonist of the biceps brachii?

Answer 6

Triceps brachii

Question 7

What muscle tissue has involuntary control?

Answer 7

-Cardiac muscle
-Smooth muscle

Question 8

Describe cardiac muscles.

Answer 8

-Uninucleate cells
-Striations
-Involuntary
-Rhythmic contractions

Question 9

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

Answer 9

Active sites of the acting filament

Question 10

What does anaerobic mean?

Answer 10

Without oxygen

Question 11

What is the neurotransmitter that stimulates skeletal muscle?

Answer 11

Acetylcholine

Question 12

What function do calcium ions perform during skeletal muscle contraction?

Answer 12

Expose myosin binding sites on actin