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jj35 jj35
wrote...
Posts: 546
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6 years ago
Which of the following types of cells display the property of electrical excitability?
 
  a) Muscle cells
  b) Neurons
  c) All of these choices
  d) None of these choices



(Question 2) Which of the following is NOT a common arrangement of muscle fascicles?
 
  a) pennate
  b) triangular
  c) oval
  d) parallel
  e) fusiform



(Question 3) Which facial bone articulates with teeth?
 
  a) Lacrimal
  b) Palatine
  c) Vomer
  d) Maxillae
  e) Nasal



(Question 4) Briefly describe the functions of synovial fluid.
 
  What will be an ideal response



(Question 5) The contractile organelles of a skeletal muscle fiber are thread-like structures called
 
  a) myofibrils.
  b) myoglobin.
  c) mitochondria.
  d) Z discs.
  e) M lines.



(Question 6) About 25 of all stress fractures involve which bone?
 
  a) rib
  b) clavicle
  c) humerus
  d) ulna
  e) tibia



(Question 7) The motor portion of the autonomic nervous system can be divided into
 
  a) somatic and sympathetic divisions.
  b) somatic and parasympathetic divisions.
  c) enteric and somatic divisions.
  d) sympathetic and parasympathetic divisions.
  e) voluntary and involuntary divisions.



(Question 8) Briefly describe the three categories of levers based on the position of their fulcrum. Give an example of each type of lever and state whether the lever works at a mechanical advantage, disadvantage or both.
 
  What will be an ideal response



(Question 9) This is a spool-shaped process on distal end of the humerus that is found medial to the capitulum and articulates with the ulna.
 
  a) Coronoid fossa
  b) Trochlea
  c) Medial epicondyle
  d) Lateral epicondyle
  e) Lesser tubercle



(Question 10) What unique characteristics would a person who is double-jointed  possess?
 
  What will be an ideal response
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Replies
wrote...
6 years ago
1) c

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2) c

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3) d

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4) Synovial fluid reduces friction, absorbs shock and supplying oxygen and nutrients to and removing carbon dioxide and metabolic wastes from the chondrocytes within articular cartilage.

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5) a

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6) e

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7) d

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8) If the fulcrum is between the effort and the load it is a first class lever. Scissors are an example of a first class lever. A first class lever can produce either a mechanical advantage or disadvantage depending on whether the effort or load is closer to the fulcrum. If the load is between the fulcrum and the effort, it is a second class lever. A wheel barrow is an example of a second class lever. They operate at a mechanical advantage because the load is always closer to the fulcrum than the effort. If the effort is between the fulcrum and the load, it is a third class lever. Forceps are an example of a third class lever. They operate at a mechanical disadvantage because the effort is always closer to the fulcrum than the load.

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9) b

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10) Double-jointed people do not have extra joints. They have greater flexibility in their articular capsules and ligaments. The resulting increase in the range of motion allows them to do such moves as touching their thumbs to their wrists and putting their ankles or elbows behind their necks. Unfortunately, such flexible joints are structurally less stable and are more easily dislocated.
jj35 Author
wrote...
6 years ago
So very smart
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