Muscular System Unit Test Flashcards
Is Skeletal Muscle Striated? Voluntary?
Yes it is both Striated and voluntary
Is Smooth Muscle Striated? Voluntary?
No it is not Striated or Voluntary
Is Cardiac Muscle Striated? Voluntary?
Yes it is striated but it is not voluntary
Each time you take a step, how many muscles help move the foot?
200
About how many muscles are in the body?
600
What type of muscle makes up the bulk of the muscular system?
Skeletal Muscle
Muscles provide ___% of the body’s temperature
85
an energy-carrying molecule known as the “energy currency of life”
Adenosine Triphosphate (ATP)
ATP is made by . . .
converting the food we eat into energy
cell
muscle fiber
Muscle fibers (cells) are wrapped up in bundles called . . .
fascicles
Fascicles are wrapped up in bundles called . . .
myofibris
bundles of sarcomeres
myofibrils
A segment of the myofibril made up of several different filaments that help with the contractions of muscle fibers
sarcomeres
“twitch”
contraction
muscle shortens
contraction
muscle lengthens
relaxation
What are the three connective tissue sheets that add extra protection to all the muscle fibers?
endomysium, perimysium, epimysium
What are the 2 myofilament proteins of a sarcomere?
actin (thin)
myosin (thick)
Sliding Filament Theory
Muscles shorten when the thin (actin) and thick (myosin) filaments slide past each other, pulling on the muscle ends.
What key component is necessary for the binding and unbinding to take place?
calcium and ATP
Four components of refuting the evolutionary development
complexity and functionality
interdependence
adaptability
irreducible complexity
explain complexity and functionality
precise control suggests an design purpose
explain interdependence
dependency of the muscles on each other shows a complex design.