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yadwinder yadwinder
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6 years ago
Contractions in which muscles shorten and produce movement are known as ________.
 
  A) isotonic contractions
  B) twitches
  C) isometric contractions
  D) resistance exercises



(Question 2) Hypercalcemia promotes the deposition of calcium to bones using osteoblasts.
 
  Indicate whether the statement is true or false



(Question 3) A smooth, sustained contraction, with no evidence of relaxation, is called ________.
 
  A) fused, or complete, tetanus
  B) a twitch
  C) unfused, or incomplete, tetanus
  D) summing of contractions



(Question 4) The arrangement of lamellae around central (Haversian) canals forms osteons (Haversian systems).
 
  Indicate whether the statement is true or false



(Question 5) Anaerobic glycolysis requires ________ to make ATP.
 
  A) creatine phosphate only
  B) oxygen only
  C) glucose only
  D) both oxygen and glucose



(Question 6) Two basic types of bone tissue are compact bone and smooth bone.
 
  Indicate whether the statement is true or false



(Question 7) According to the sliding filament theory, how does muscle contraction occur?
 
  A) Myosin heads form cross bridges and pull thin filaments, causing them to slide.
  B) Both thick and thin filaments shorten as the muscle contracts.
  C) A bands bunch up and shorten as myosin heads attach to thin filaments.
  D) Myosin heads attach and detach from thin filaments, causing thin filaments to shorten.



(Question 8) The skeletal system is divided into two parts: the axial skeleton, the bones that form the longitudinal axis of the body, and the appendicular skeleton, the bones of the limbs and girdles that attach them to the skeleton.
 
  Indicate whether the statement is true or false



(Question 9) What is the unstoppable electrical current that travels down the length of the entire surface of a sarcolemma?
 
  A) neuromuscular junction
  B) action potential
  C) neurotransmitter
  D) acetylcholine



(Question 10) The elbow is classified as a ________.
 
  A) plane joint
  B) hinge joint
  C) pivot joint
  D) saddle joint
  E) condylar joint
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xstealthx08xstealthx08
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6 years ago
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