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PNB 2274 EXAM 1 PRACTICE QUESTIONS AND ANSWER

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PNB 2274 EXAM 1 PRACTICE QUESTIONS AND ANSWERS In the skull of a newborn baby, the space between the developing skull bones is known as a. Lacuna b. Aversion canals c. Fontanel d. Intramembranous canal e. Central canal - Ans:-c. Fontanel You recently identified a disorder in which the activ...

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  • October 24, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • PNB 2274
  • PNB 2274
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GraceAmelia
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PNB 2274 EXAM 1 PRACTICE
QUESTIONS AND ANSWERS

In the skull of a newborn baby, the space between the developing skull bones is known as


a. Lacuna


b. Aversion canals


c. Fontanel


d. Intramembranous canal


e. Central canal - Ans:✔✔-c. Fontanel


You recently identified a disorder in which the activity of osteoblasts exceeds the activity of osteoclasts.

How will the properties of the long bone be affected?


a. The bone would have a reduced inorganic content; as a result it would be weaker and more elastic.


b. The bone would have an increased inorganic content; as a result it would be weaker and more elastic


c. The bone would have a reduced inorganic content; as a result it would be tougher and less ductile.



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, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




d. The bone would have an increased inorganic content; as a result it would be tougher and less ductile


e. The bone would have a reduced inorganic content; as a result it would sustain greater compressive

forces - Ans:✔✔-d. The bone would have an increased inorganic content; as a result it would be tougher

and less ductile


The method of mammary gland secretion is:


a. Apocrine


b. Mesocrine


c. Merocrine


d. Fullcrine


e. Holocrine - Ans:✔✔-a. Apocrine


Mutation in connexin26 (Cx26) underlie a range of serious human pathologies. More recently, it was also

reported that Cx26 hemichannels linked to keratitis-ichthyosis-deafness syndrome, are associated with

disordered breathing in humans. Mutation in connexin26 most likely will disturb:


a. Tight junctions


b. Adhering junctions


c. Gap junctions

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, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




d. Desmosomes - Ans:✔✔-c. Gap junctions


Which of the following is TRUE?


a. Homeostatic mechanisms work through positive feedback


b. Homeostasis functions to ensure internal conditions fluctuate around a set-point


c. Circadian thythms affect set points


d. Both A and B is true


e. Both B and C is true - Ans:✔✔-e. Both B and C is true


How does PTH help increase the calcium ion concentration of the blood?


a. PTH decreases urine calcium output


b. PTH increases blood calcium levels by decreasing osteoclast activity


c. PTH increases blood calcium levels by increasing osteoblast activity


PTH increases calcium blood levels by increasing the rate of calcium uptake to osteocytes - Ans:✔✔-a.

PTH decreases urine calcium output


When doing a handstand, the stomach is ____ to the lungs.


a. Inferior

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