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AnitaSmith AnitaSmith
wrote...
Posts: 606
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6 years ago
Briefly describe the function of the fontanels.
 
  What will be an ideal response



(Question 2) The brain and spinal cord develop from the _____ neural tube.
 
  a) mesodermal
  b) endodermal
  c) ectodermal
  d) cranial
  e) caudal



(Question 3) Articular discs
  1. maintain the stability of a joint.
  2. direct flow of the synovial fluid to areas of greatest friction.
  3. are made of hyaline cartilage.
  4. are only found in the vertebral column.
 
  a) 1 only
  b) 2 only
  c) 3 only
  d) 4 only
  e) 1 and 2



(Question 4) Which of the following regions of the sarcomere contain thick filaments?
 
  a) zone of overlap
  b) A band
  c) H zone
  d) both A band and H zone
  e) All of these answer choices are correct.



(Question 5) Briefly describe the processes by which bone increases in length and diameter.
 
  What will be an ideal response



(Question 6) The distal end of the radius articulates with how many bones of the wrist?
 
  a) 1
  b) 2
  c) 3
  d) 4
  e) 5



(Question 7) This type of neuron has one dendrite and one axon emerging from the cell body.
 
  a) Multipolar neuron
  b) Bipolar neuron
  c) Unipolar neuron
  d) Purkinje cell
  e) Renshaw cell



(Question 8) This type of muscle works by stabilizing the origin of the agonist so that it can act more efficiently.
 
  a) synergist
  b) agonist
  c) antagonist
  d) fixator
  e) secondary mover



(Question 9) Briefly describe the location of the four most prominent sutures of the skull including the articulating bones.
 
  What will be an ideal response



(Question 10) Another term for menisci is
 
  a) articular fat pads.
  b) articular discs.
  c) articular spaces.
  d) capsular fat pads.
  e) capsular discs.
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Replies
wrote...
6 years ago
1) The fontanels are important in allowing flexibility during childbirth and allow brain growth after birth.

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2) c

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3) e

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4) e

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5) The only means by which bone can increase in length (interstitial growth) is by activity at the epiphyseal plate. Until full height is reached, the plate consists of layers of chondrocytes, which generate matrix that is then calcified and replaced by bone matrix secreted by osteoblasts on the diaphyseal side of the plate. Around ages 18-20 the cartilage is replaced completely by bone and no more lengthwise growth can occur. Bone increases in diameter via appositional growth as new bone matrix is laid down by osteoblasts in the periosteum.

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6) c

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7) b

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8) d

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9) The coronal suture unites the frontal bone and both parietal bones. The sagittal suture unites the two parietal bones on the superior midline of the skull. The lambdoid suture unites the two parietal bones to the occipital bone. The squamous sutures unite the parietal and temporal bones on the lateral aspects of the skull.

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10) b
AnitaSmith Author
wrote...
6 years ago
Thanks
wrote...
6 years ago
You're very welcome
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