Body Fluids & Circulation PPT Biology Class 11

 Page 1


Body Fluids and 
Circulation
Page 2


Body Fluids and 
Circulation
BLOOD
Fluid Matrix
Blood contains a fluid matrix called plasma 
which serves as the medium for transporting 
various substances throughout the body.
Formed Elements
These include red blood cells (RBCs), white 
blood cells (WBCs), and platelets, each with 
specialized functions.
Blood is a vital fluid connective tissue responsible for transporting oxygen, nutrients, hormones, and waste 
materials throughout the body. It consists of:
A fluid matrix called plasma
Formed elements such as red blood cells (RBCs), white blood cells (WBCs), and platelets
These components play essential roles in sustaining life by maintaining homeostasis, immune defense, and 
gas exchange.
Page 3


Body Fluids and 
Circulation
BLOOD
Fluid Matrix
Blood contains a fluid matrix called plasma 
which serves as the medium for transporting 
various substances throughout the body.
Formed Elements
These include red blood cells (RBCs), white 
blood cells (WBCs), and platelets, each with 
specialized functions.
Blood is a vital fluid connective tissue responsible for transporting oxygen, nutrients, hormones, and waste 
materials throughout the body. It consists of:
A fluid matrix called plasma
Formed elements such as red blood cells (RBCs), white blood cells (WBCs), and platelets
These components play essential roles in sustaining life by maintaining homeostasis, immune defense, and 
gas exchange.
P l a s m a
Plasma is the liquid portion of blood, making up about 55% of its 
volume. It is a straw-coloured, slightly viscous fluid composed of:
90392% water 3 acts as a solvent and medium for transport
638% proteins, including:
Fibrinogen 3 involved in blood clotting
Globulins 3 key players in immunity
Albumins 3 maintain osmotic pressure and volume
Inorganic salts and ions: Na z, Ca² z, Mg² z, HCO £ {, Cl {
Organic nutrients: Glucose, amino acids, lipids, vitamins, and 
hormones
Waste products: Urea, creatinine, and others
Plasma also contains clotting factors. When these are removed, the 
fluid is called serum.
Page 4


Body Fluids and 
Circulation
BLOOD
Fluid Matrix
Blood contains a fluid matrix called plasma 
which serves as the medium for transporting 
various substances throughout the body.
Formed Elements
These include red blood cells (RBCs), white 
blood cells (WBCs), and platelets, each with 
specialized functions.
Blood is a vital fluid connective tissue responsible for transporting oxygen, nutrients, hormones, and waste 
materials throughout the body. It consists of:
A fluid matrix called plasma
Formed elements such as red blood cells (RBCs), white blood cells (WBCs), and platelets
These components play essential roles in sustaining life by maintaining homeostasis, immune defense, and 
gas exchange.
P l a s m a
Plasma is the liquid portion of blood, making up about 55% of its 
volume. It is a straw-coloured, slightly viscous fluid composed of:
90392% water 3 acts as a solvent and medium for transport
638% proteins, including:
Fibrinogen 3 involved in blood clotting
Globulins 3 key players in immunity
Albumins 3 maintain osmotic pressure and volume
Inorganic salts and ions: Na z, Ca² z, Mg² z, HCO £ {, Cl {
Organic nutrients: Glucose, amino acids, lipids, vitamins, and 
hormones
Waste products: Urea, creatinine, and others
Plasma also contains clotting factors. When these are removed, the 
fluid is called serum.
Formed Elements
Erythrocytes (RBCs)
Responsible for oxygen and carbon 
dioxide transport throughout the 
body.
Leucocytes (WBCs)
Provide defense and immunity 
against pathogens and foreign 
substances.
Platelets (Thrombocytes)
Essential for clotting and wound 
healing processes.
These are the cellular components of blood, making up the remaining 45% of blood volume. Each type has unique 
structures and specialized functions to support bodily functions.
Page 5


Body Fluids and 
Circulation
BLOOD
Fluid Matrix
Blood contains a fluid matrix called plasma 
which serves as the medium for transporting 
various substances throughout the body.
Formed Elements
These include red blood cells (RBCs), white 
blood cells (WBCs), and platelets, each with 
specialized functions.
Blood is a vital fluid connective tissue responsible for transporting oxygen, nutrients, hormones, and waste 
materials throughout the body. It consists of:
A fluid matrix called plasma
Formed elements such as red blood cells (RBCs), white blood cells (WBCs), and platelets
These components play essential roles in sustaining life by maintaining homeostasis, immune defense, and 
gas exchange.
P l a s m a
Plasma is the liquid portion of blood, making up about 55% of its 
volume. It is a straw-coloured, slightly viscous fluid composed of:
90392% water 3 acts as a solvent and medium for transport
638% proteins, including:
Fibrinogen 3 involved in blood clotting
Globulins 3 key players in immunity
Albumins 3 maintain osmotic pressure and volume
Inorganic salts and ions: Na z, Ca² z, Mg² z, HCO £ {, Cl {
Organic nutrients: Glucose, amino acids, lipids, vitamins, and 
hormones
Waste products: Urea, creatinine, and others
Plasma also contains clotting factors. When these are removed, the 
fluid is called serum.
Formed Elements
Erythrocytes (RBCs)
Responsible for oxygen and carbon 
dioxide transport throughout the 
body.
Leucocytes (WBCs)
Provide defense and immunity 
against pathogens and foreign 
substances.
Platelets (Thrombocytes)
Essential for clotting and wound 
healing processes.
These are the cellular components of blood, making up the remaining 45% of blood volume. Each type has unique 
structures and specialized functions to support bodily functions.
Erythrocytes (RBCs)
Production Site: Produced in red bone marrow
Structure: Biconcave, enucleated cells in mammals 
(maximizes surface area for gas exchange)
Composition: Contain hemoglobin, a red, iron-rich protein 
that binds to oxygen and carbon dioxide
Lifespan: Life span: ~120 days
Destruction: Destroyed in the spleen, often referred to as 
the "graveyard of RBCs"
RBCs are the most numerous cells in blood, with about 5 to 5.5 
million per mm³ in healthy males. Hemoglobin levels typically 
range from 12316 g/100 mL of blood. RBCs play a key role in 
respiratory gas transport and help regulate pH in the blood.