35 Questions
Which component of blood is responsible for carrying oxygen to the body's tissues?
Red blood cells
What is the primary function of white blood cells in the body?
Fighting infections
What is the role of platelets in the composition of blood?
Assisting in blood clotting and wound healing
What is the main component of blood plasma?
Water
Which component of blood makes up the largest percentage in the composition of blood?
Plasma
What is the normal range of hematocrit (Hct) in males?
40-50%
Which of the following is NOT a characteristic of erythrocytes (red blood cells)?
Presence of a nucleus
What is the primary function of erythrocytes (red blood cells)?
Carrying oxygen
What is the normal range of hematocrit (Hct) in females?
Between 30% and 40%
Which type of white blood cell is responsible for phagocytosis?
Monocyte
Which white blood cell is involved in producing antibodies?
Lymphocyte
What is the size range of white blood cells?
10-20mm
Which of the following is true about platelets?
They have a lifespan of 7-14 days
What is the origin of platelets?
They are produced in the bone marrow
Which cell in the body gives rise to platelets?
Megakaryocytes
Which of the following is the primary function of albumin in plasma?
Transporting substances such as drugs and hormones
Which type of plasma protein is responsible for blood clotting?
Fibrinogen
Which of the following is a function of proteins in blood plasma?
Regulating pH by binding H+ or OH-
What is the term used to describe the pressure exerted by proteins in blood plasma?
Oncotic pressure
Which of the following is true about oncotic pressure?
It is the pressure that draws water into the capillary system
What is the primary function of hydrostatic pressure in capillaries?
To drive fluid out of the capillary system
What is the relationship between oncotic pressure and osmotic pressure?
Oncotic pressure is a proportion of the osmotic pressure due to proteins
Which of the following is the primary function of oncotic pressure in capillaries?
To reduce water potential in the capillary
What happens to oncotic pressure as blood flows towards the venule?
It increases
What is the role of hydrostatic pressure in capillaries?
To maintain diffusion equilibrium between the interstitial space and capillary
Why can't proteins cross through the capillary wall?
They are too large
What is the effect of high pressure in arteries on water movement in capillaries?
It causes water movement out of the capillary
What is the effect of high hydrostatic pressure in capillaries on fluid gain?
It leads to loss of fluid from capillaries
What is the effect of low hydrostatic pressure in capillaries on fluid gain?
It leads to gain of fluid due to oncotic pressure
What is the effect of decreased oncotic pressure (less protein in plasma) on fluid gain?
It leads to less gain of fluid
Which of the following is NOT a cause of oedema (edema)?
Increased oncotic pressure
What is the primary role of the lymphatic system in relation to oedema?
Removing waste products
Which immune cell releases chemical mediators that can cause localised swelling and oedema?
Mast cells
Which of the following conditions is characterized by localized swelling and is caused by the release of chemical mediators, such as histamine, by immune cells?
Angioedema
What is the primary cause of localized oedema following the removal of lymph nodes?
Increased capillary permeability
Test your knowledge on the composition of blood and its primary functions with this quiz. Explore the main components, such as red blood cells, white blood cells, platelets, and plasma. Gain a deeper understanding of the various constituents and their roles within the blood.
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