Podcast
Questions and Answers
Blood is a special type of ______ tissue with fluid matrix.
Blood is a special type of ______ tissue with fluid matrix.
connective
The fluid matrix of blood is known as ______ and formed of water containing many dissolved proteins, hormones, minerals, enzymes, nutrients and gases.
The fluid matrix of blood is known as ______ and formed of water containing many dissolved proteins, hormones, minerals, enzymes, nutrients and gases.
plasma
Red blood corpuscles are also known as ______ or erythrocytes.
Red blood corpuscles are also known as ______ or erythrocytes.
RBCs
The main function of blood is to ______ oxygen, nutrients, minerals and hormones to tissues.
The main function of blood is to ______ oxygen, nutrients, minerals and hormones to tissues.
Blood films are histologically-examined using ______ Stain or Giemsa Stain.
Blood films are histologically-examined using ______ Stain or Giemsa Stain.
RBCs contain ______ % haemoglobin.
RBCs contain ______ % haemoglobin.
In ______ flow circulation, RBCs may adhere to one another as piles of coins.
In ______ flow circulation, RBCs may adhere to one another as piles of coins.
The glycocalyx includes ______ sites for ABO blood groups and Rhesus factor.
The glycocalyx includes ______ sites for ABO blood groups and Rhesus factor.
Old corpuscles are trapped by ______ of liver, spleen and bone marrow.
Old corpuscles are trapped by ______ of liver, spleen and bone marrow.
The normal shape of RBCs is maintained in plasma which is equivalent to osmotic pressure of ______% (NaCl) saline solution.
The normal shape of RBCs is maintained in plasma which is equivalent to osmotic pressure of ______% (NaCl) saline solution.
Flashcards
Blood type antigens
Blood type antigens
Sites on the glycocalyx responsible for ABO and Rhesus blood groups.
Blood's fluid matrix
Blood's fluid matrix
Plasma, a water-based solution containing dissolved proteins, hormones, minerals, enzymes, nutrients, and gases.
Red blood cells
Red blood cells
RBCs; cells carrying oxygen.
Blood's main function
Blood's main function
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RBC structure (hemoglobin)
RBC structure (hemoglobin)
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Osmotic Pressure in blood
Osmotic Pressure in blood
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Blood film staining
Blood film staining
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RBC clumping
RBC clumping
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Macrophage role
Macrophage role
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Connective tissue
Connective tissue
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Study Notes
Blood and Its Components
- Blood is a special type of connective tissue with a fluid matrix that circulates within a closed system of blood vessels.
- It consists of 55% fluid matrix (plasma) and 45% formed elements (red blood cells, white blood cells, and platelets).
Plasma
- Plasma is the fluid matrix of blood, comprising 55% of its total volume.
- It is composed of water, dissolved proteins, hormones, minerals, enzymes, nutrients, and gases.
Formed Elements
- Red blood cells (RBCs or erythrocytes) make up the majority of suspended solids in blood plasma.
- White blood cells (WBCs or leucocytes) are another type of formed element.
- Platelets (thrombocytes) are the third type of formed element.
Red Blood Corpuscles (RBCs)
- RBCs are biconcave, non-nucleated, rounded discs.
- They have a diameter of 6-9 µm (average 7.5 µm) and a thickness of 2.2 µm at the periphery and 0.8 µm at the center.
- RBCs appear greenish yellow in color due to the natural color of hemoglobin, but appear red when stained.
- They contain 33% hemoglobin, 66% water, and 1% enzymes.
- RBCs are produced in bone marrow and have a lifespan of approximately 120 days.
Functions of RBCs
- RBCs transport oxygen, nutrients, and hormones to tissues.
- They remove carbon dioxide and metabolic wastes from tissues.
- They help regulate the internal environment and temperature of the body.
- They defend against microorganisms and foreign antigens.
Characteristics of RBCs
- RBCs have a Rouleaux appearance in slow circulation due to surface tension force.
- They have antigenic sites for ABO blood groups and Rhesus factor (Rh) on their glycocalyx.
- RBCs are osmotic fragile, meaning they can change shape in response to changes in osmotic pressure.
White Blood Cells (WBCs)
- WBCs will be discussed in detail later.
Platelets
- Platelets will be discussed in detail later.
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