This topic contains a solution. Click here to go to the answer

Author Question: Considering anemia, what effect do vitamin B12 and folate deficiencies have on red blood cells? ... (Read 74 times)

sarasara

  • Hero Member
  • *****
  • Posts: 521
Considering anemia, what effect do vitamin B12 and folate deficiencies have on red blood cells?
 
  a. They are unable to differentiate into erythrocytes.
  b. They contain malformed hemoglobin molecules.
  c. O2-carrying capacity is decreased.
  d. Their life span is shorter.

Question 2

A 57-year-old male presents to his primary care provider for red face, hands, feet, ears, and headache and drowsiness. A blood smear reveals an increased number of erythrocytes, indicat-ing:
 
  a. polycythemia vera (PV).
  b. leukemia.
  c. sideroblastic anemia.
  d. hemosiderosis.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juwms

  • Sr. Member
  • ****
  • Posts: 337
Answer to Question 1

ANS: D
These deficiencies lead to defective erythrocytes that die prematurely, which decreases their numbers in the circulation, causing anemia. These deficiencies do not cause the RBCs to lack differentiation, contain malformed hemoglobin, or experience diminished O2-carrying capacity.

Answer to Question 2

ANS: A
PV is characterized by excessive proliferation of erythrocyte precursors in the bone marrow. Leukemia is not manifested by changes in erythrocytes. Sideroblastic anemia is characterized by sideroblastic rings. Hemosiderosis is iron overload.




sarasara

  • Member
  • Posts: 521
Reply 2 on: Jun 25, 2018
:D TYSM


cdmart10

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

For a complete list of videos, visit our video library