Ch. 10 and 11-Muscular System

Actin and myosin filaments are both present in the dense region called the 

• A Band

• I Band

• M line

• Z disc

In contraction, the _____

• Actin becomes shorter

• Myosin becomes shorter

• I band becomes shorter

• None of these

Which of these are not in a long bone?

• sarcomere

• compact bone

• spongy bone

• medullary cavity

The neuromuscular transmitter released at the axon bulb is 

• Ca

• Na

• ATP

• Acetylcholine

Energy for muscle contraction is provided by _____.

• ATP=ADP + P

• Glucose+Water+ lactic acid

• Glucose+ O = lactic acid

• AMP=ADP

Calcium ions bind to 

• tropomyosin

• actin

• troponin

• myosin

A/An _______ is connective tissue that attaches muscle to the periosteal membrane of bone.

• aponeurosis

• tendon

• superficial fascia

• deep fascia

Which of the following can be a function of muscle tissue in general?

• storage of trigylycerides

• controlling flow of nerve impulses

• storing calcium

• heat generation

Embryonic cells that fuse to form muscle cells:

• myoblasts

• fibrils

• chondrocytes

• sarcolemma

Which molecule will be used to supply energy to regenerate ATP?

• glucose

• lactate

• creatine phosphate

• tropomyosin