A&P II Blood Composition and Functions
36 flashcards covering A&P II Blood Composition and Functions for the ANATOMY-PHYSIOLOGY-2 A&P II Systems section.
Blood composition and its functions are critical components of Anatomy and Physiology II, as outlined by the American Association of Colleges of Nursing (AACN). This topic encompasses the various elements of blood, including red blood cells, white blood cells, platelets, and plasma, as well as their roles in transport, immunity, and hemostasis. Understanding these components is essential for grasping how the circulatory system supports overall body function and homeostasis.
In practice exams and competency assessments, questions on blood composition often require identification of cell types, their functions, and the physiological implications of blood disorders. Common traps include confusing similar cell types or overlooking the significance of blood plasma components. Additionally, questions may test the ability to interpret lab results related to blood composition, where misreading values can lead to incorrect conclusions about a patient’s health.
A practical tip to keep in mind is the importance of understanding the clinical relevance of blood components, as this knowledge can directly impact patient care and treatment decisions.
Terms (36)
- 01
What is the primary function of red blood cells?
The primary function of red blood cells (erythrocytes) is to transport oxygen from the lungs to the tissues and carry carbon dioxide from the tissues back to the lungs for exhalation (Marieb, Anatomy and Physiology).
- 02
What is the normal range for hemoglobin in adult males?
The normal range for hemoglobin in adult males is approximately 13.8 to 17.2 grams per deciliter (g/dL) (Tortora, Anatomy and Physiology).
- 03
What component of blood is responsible for clotting?
Platelets (thrombocytes) are the component of blood responsible for initiating the clotting process to prevent bleeding (Saladin, Anatomy and Physiology).
- 04
How often should blood pressure be checked in a healthy adult?
Blood pressure should be checked at least once every two years in healthy adults, according to guidelines from the American Heart Association (Marieb, Anatomy and Physiology).
- 05
What is the main function of plasma in the blood?
Plasma serves as the liquid medium for transporting nutrients, hormones, proteins, and waste products throughout the body (Tortora, Anatomy and Physiology).
- 06
What is the average lifespan of a red blood cell?
The average lifespan of a red blood cell is about 120 days before it is removed by the spleen and liver (Saladin, Anatomy and Physiology).
- 07
What type of white blood cell is primarily involved in allergic reactions?
Basophils are the type of white blood cell primarily involved in allergic reactions by releasing histamine (Marieb, Anatomy and Physiology).
- 08
What is the role of hemoglobin in red blood cells?
Hemoglobin binds to oxygen in the lungs and releases it in the tissues, also facilitating the transport of carbon dioxide back to the lungs (Tortora, Anatomy and Physiology).
- 09
How is blood classified based on its components?
Blood is classified into two main components: formed elements (cells and cell fragments) and plasma (the liquid component) (Saladin, Anatomy and Physiology).
- 10
What is the function of leukocytes?
Leukocytes (white blood cells) function primarily in the immune response, protecting the body against infections and foreign invaders (Marieb, Anatomy and Physiology).
- 11
What is the normal range for platelet count in adults?
The normal range for platelet count in adults is approximately 150,000 to 450,000 platelets per microliter of blood (Tortora, Anatomy and Physiology).
- 12
What is the primary function of lymphocytes?
Lymphocytes are primarily responsible for the adaptive immune response, including the production of antibodies and the destruction of infected cells (Saladin, Anatomy and Physiology).
- 13
What is the significance of blood type compatibility in transfusions?
Blood type compatibility is crucial in transfusions to prevent hemolytic reactions, which occur when the recipient's immune system attacks transfused blood cells (Marieb, Anatomy and Physiology).
- 14
What is the role of fibrinogen in blood?
Fibrinogen is a plasma protein that is converted into fibrin during the clotting process, forming a mesh that helps to stop bleeding (Tortora, Anatomy and Physiology).
- 15
How often should a person donate blood?
A person can donate whole blood every 56 days, according to guidelines from the American Red Cross (Saladin, Anatomy and Physiology).
- 16
What is the primary component of plasma?
Water is the primary component of plasma, constituting about 90-92% of its volume, with the remainder being proteins, electrolytes, and other substances (Marieb, Anatomy and Physiology).
- 17
What is the function of erythropoietin?
Erythropoietin is a hormone produced by the kidneys that stimulates the production of red blood cells in response to low oxygen levels (Tortora, Anatomy and Physiology).
- 18
What is the normal range for white blood cell count in adults?
The normal range for white blood cell count in adults is approximately 4,500 to 11,000 cells per microliter of blood (Saladin, Anatomy and Physiology).
- 19
What is the role of neutrophils in the immune system?
Neutrophils are the most abundant type of white blood cells and play a key role in the innate immune response by engulfing and destroying pathogens (Marieb, Anatomy and Physiology).
- 20
What is the function of the spleen in blood composition?
The spleen filters blood, removes old or damaged red blood cells, and plays a role in the immune response (Tortora, Anatomy and Physiology).
- 21
What is the primary function of monocytes?
Monocytes differentiate into macrophages and dendritic cells, which are important for phagocytosis and antigen presentation in the immune response (Saladin, Anatomy and Physiology).
- 22
What is the role of albumin in blood plasma?
Albumin helps maintain osmotic pressure and transports various substances, including hormones and drugs, in the blood (Marieb, Anatomy and Physiology).
- 23
What is the difference between plasma and serum?
Plasma is the liquid component of blood that contains clotting factors, while serum is the liquid that remains after blood has clotted and lacks these factors (Tortora, Anatomy and Physiology).
- 24
What triggers the process of hemostasis?
Hemostasis is triggered by vascular injury, which initiates a series of events leading to blood clot formation (Saladin, Anatomy and Physiology).
- 25
What is the function of the bone marrow in blood composition?
Bone marrow is the primary site of hematopoiesis, where blood cells are produced, including red blood cells, white blood cells, and platelets (Marieb, Anatomy and Physiology).
- 26
What is the role of vitamin K in blood coagulation?
Vitamin K is essential for the synthesis of certain clotting factors, which are necessary for proper blood coagulation (Tortora, Anatomy and Physiology).
- 27
What is the average volume of blood in an adult human?
The average volume of blood in an adult human is approximately 5 to 6 liters, accounting for about 7-8% of body weight (Saladin, Anatomy and Physiology).
- 28
What is the significance of Rh factor in blood transfusions?
The Rh factor is significant in blood transfusions because Rh-negative individuals can develop antibodies against Rh-positive blood, leading to serious reactions (Marieb, Anatomy and Physiology).
- 29
What is the primary role of the kidneys in blood composition?
The kidneys regulate blood composition by filtering waste products, balancing electrolytes, and controlling blood volume and pressure (Tortora, Anatomy and Physiology).
- 30
What is the role of cytokines in blood cell production?
Cytokines are signaling proteins that regulate the production and differentiation of blood cells in the bone marrow (Saladin, Anatomy and Physiology).
- 31
What is the function of the thymus gland in relation to blood?
The thymus gland is involved in the maturation of T lymphocytes, which are crucial for the adaptive immune response (Marieb, Anatomy and Physiology).
- 32
What is the process of hematopoiesis?
Hematopoiesis is the process of blood cell formation, occurring primarily in the bone marrow, where stem cells differentiate into various blood cell types (Tortora, Anatomy and Physiology).
- 33
What is the function of the liver in blood composition?
The liver produces many plasma proteins, including clotting factors and albumin, and plays a key role in metabolizing nutrients and detoxifying blood (Saladin, Anatomy and Physiology).
- 34
What is the role of macrophages in the blood?
Macrophages are derived from monocytes and play a crucial role in phagocytosis, removing pathogens and dead cells from the bloodstream (Marieb, Anatomy and Physiology).
- 35
What is the typical lifespan of platelets?
The typical lifespan of platelets is about 7 to 10 days before they are removed from circulation by the spleen (Tortora, Anatomy and Physiology).
- 36
What is the role of the coagulation cascade in hemostasis?
The coagulation cascade is a series of enzymatic reactions that lead to the formation of a fibrin clot to stop bleeding (Saladin, Anatomy and Physiology)}]} ``` ``` {