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Related Concept Videos

Structure and Function of Erythrocytes01:29

Structure and Function of Erythrocytes

There are between 4.2 and 6 million erythrocytes, also known as red blood cells, in every microliter of blood. These cells are small, flattened biconcave discs with centers that are depressed.
The erythrocyte plasma membrane is associated with proteins such as spectrin, which forms a flexible cytoplasmic meshwork. This meshwork allows erythrocytes to twist, turn, become cup-shaped, and regain their biconcave shape as they pass through narrow capillaries. Additionally, erythrocytes can form...
Lifecycle of Erythrocytes01:22

Lifecycle of Erythrocytes

Erythrocytes, also known as red blood cells, constantly move through blood capillaries. As a result, they damage their plasma membrane due to the continuous friction. Typically, after 100 to 120 days, erythrocytes become rigid and fragile as they wear out. As they pass through small vessels in the spleen and liver, they can get trapped and break apart into fragments.
The resident phagocytic macrophages deal with these damaged cells by engulfing them and separating their globin and heme groups.
Erythropoiesis01:14

Erythropoiesis

Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia, and...
Factors Affecting Erythropoiesis01:24

Factors Affecting Erythropoiesis

The cardiovascular system regulates the number of erythrocytes in the bloodstream to ensure optimal oxygen transport. It also prevents over-proliferation of these cells, which helps to maintain blood viscosity and flow rate.
Several factors influence the erythrocyte production rate, with tissue oxygen level being among the most critical. Intense exercise or high altitudes can cause tissue hypoxia, which triggers the kidneys to release more erythropoietin (EPO) into the bloodstream.
EPO then...
Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Characteristics and Functions of Blood01:26

Characteristics and Functions of Blood

Blood is specialized connective tissue comprising about 8% of the body mass. It has a thick, liquid extracellular matrix that contains cells, dissolved proteins, and electrolytes, making it five times more viscous than water. Blood is warm, around 38°C, and has an alkaline pH ranging from 7.35 to 7.45.
The primary function of blood is to transport oxygen and carbon dioxide between tissues and the lungs. Oxygenated blood is bright red, while oxygen-depleted blood is darker. It also carries...

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Related Experiment Video

Updated: May 23, 2026

Immunostaining-Based Detection of Dynamic Alterations in Red Blood Cell Proteins
10:07

Immunostaining-Based Detection of Dynamic Alterations in Red Blood Cell Proteins

Published on: March 17, 2023

Red blood cell mechanics.

Amalkumar Bhattacharya1

  • 1MP Shah Medical College and GG Hospital, Jamnagar 361001.

Journal of the Indian Medical Association
|April 7, 2012
PubMed
Summary
This summary is machine-generated.

Red blood cells (erythrocytes) deform significantly during their lifespan. This review covers cell shape, viscosity, and membrane properties crucial for red blood cell deformability.

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Area of Science:

  • Hematology
  • Biophysics
  • Cell Biology

Background:

  • Erythrocytes experience substantial passive deformation throughout their 120-day lifespan.
  • Red blood cell deformability is critical for microcirculation and oxygen transport.

Purpose of the Study:

  • To review the key cellular factors influencing erythrocyte deformability.
  • To provide a concise overview of cell shape, cytoplasmic viscosity, and membrane properties.

Main Methods:

  • Literature review of erythrocyte biomechanics.
  • Synthesis of existing research on red blood cell components.

Main Results:

  • Cell shape, cytoplasmic viscosity, and membrane deformability/stability are identified as primary determinants of red blood cell deformability.
  • These factors collectively govern the erythrocyte's ability to navigate narrow capillaries.

Conclusions:

  • Understanding these three cellular components is essential for comprehending red blood cell function.
  • This review consolidates knowledge on the biophysical properties of erythrocytes.