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 100 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
Wow, this really help

amit

  • Member
  • Posts: 364
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Mechanism of action of microRNA (miRNA) Mechanism of action of microRNA (miRNA)
A normal pregnancy. A normal pregnancy.
The experience of romantic attachments is similar among sexual majority and minority youth. The experience of romantic attachments is similar among sexual majority and minority youth.
A gauge reading with the needle fluctuating 3 to 9 inches Hg below normal often indicates a vacuum ... A gauge reading with the needle fluctuating 3 to 9 inches Hg below normal often indicates a vacuum ...
Normal DNA vs Italian DNA Normal DNA vs Italian DNA
Majority-Minority Relations Majority-Minority Relations
Video: Mycobacterium tuberculosis: Drug Resistance and Natural Selection

For a complete list of videos, visit our video library