This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What mechanism is responsible for the destruction of the majority of normal senescent erythrocytes? ... (Read 101 times)

formula1

  • Hero Member
  • *****
  • Posts: 666
on: Jun 25, 2018
What mechanism is responsible for the destruction of the majority of normal senescent erythrocytes?
 
  a. Intravascular hemolysis
  b. Rupture by complement
  c. Phagocytosis by peripheral neutrophils
  d. Phagocytosis by splenic macrophages

Question 2

Depletion of serum haptoglobin indicates:
 
  a. Decreased erythropoiesis
  b. Extravascular hemolysis
  c. Intravascular hemolysis
  d. Increased phagocytosis of macrophages


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sassygurl126

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: D
As red cells become old (senescent), changes occur in the membrane and intracellularly that lead to their phagocytosis by macrophages in the spleen.

Answer to Question 2

ANS: C
Haptoglobin is a plasma protein that binds any free hemoglobin in plasma after red cells lysis in circulation. This helps salvage the iron in the hemoglobin so that it is not lost. When significant intravascular hemolysis (lysis in the blood) exists, haptoglobin is depleted; this can be measured in plasma.


formula1

  • Member
  • Posts: 666
Reply 2 on: Jun 25, 2018
:D TYSM

amandanbreshears

  • Member
  • Posts: 320
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Cellular Defense Mechanism Cellular Defense Mechanism
Normal combustion is a smooth, controlled burning of the air–fuel mixture. Normal combustion is a smooth, controlled burning of the air–fuel mixture.
Majority-Minority Relations Majority-Minority Relations
Cancerous cells versus normal cells Cancerous cells versus normal cells
Sliding Filament Mechanism Sliding Filament Mechanism
The chromosome locations for BRCA1 and BRCA2. Together, these genes account for the majority of case The chromosome locations for BRCA1 and BRCA2. Together, these genes account for the majority of case
Video: Medullary osmotic gradient: countercurrent multiplier, urea recycling & vasa recta countercurrent exchange

For a complete list of videos, visit our video library