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 99 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
Great answer, keep it coming :)

mohan

  • Member
  • Posts: 362
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
Homeostatic Mechanism Homeostatic Mechanism
Normal male karyotype Normal male karyotype
The normal food link between sea urchins and algae/ Corals The normal food link between sea urchins and algae/ Corals
Mechanism of antiulcer drugs Mechanism of antiulcer drugs
Find the equation of the normal line to f(x)=sinx+cosx at x = π. Find the equation of the normal line to f(x)=sinx+cosx at x = π.
Video: Magnetic resonance imaging (MRI)

For a complete list of videos, visit our video library