Hematopoietic Tissues and Blood Composition

What is the primary function of blood in relation to body temperature?

Which component makes up the largest portion of blood?

In what way does blood contribute to the body's acid-base balance?

What is a function of blood that assists in the removal of metabolic waste?

Which statement about blood's role in transport is incorrect?

Which of the following accurately describes the composition of plasma?

What role do platelets play in the blood composition?

How does an increase in the number of erythrocytes affect blood flow?

What does the term hematocrit refer to?

Which statement about the buffy coat is correct?

Which type of hematopoietic tissue primarily produces lymphocytes?

Where is red bone marrow located in the human body?

What is the primary function of hematopoietic tissues?

Which of the following is NOT a location where lymphatic tissue can be found?

Which of the following statements best describes the distinction between red bone marrow and lymphatic tissue?

Hematopoietic Tissues

Produce blood cells
Two types: Red bone marrow and lymphatic tissue
- Red bone marrow located in ends of long bones and flat, irregular bones
- Lymphatic tissue located in spleen, lymph nodes, and thymus glands, supports blood cell production by producing lymphocytes

Blood Composition and Function

Consists of plasma and formed elements
- Plasma: Contains proteins, primarily albumin, plays vital roles in blood clotting, immune response, and fluid regulation, serum is plasma without clotting proteins
- Formed elements: Constitute 45% of blood, include erythrocytes (RBCs), leukocytes (WBCs), and platelets (thrombocytes), WBCs and platelets form a layer beneath plasma called the buffy coat, buffy coat comprises approximately 1% or less of total blood volume, RBCs are the heaviest and sink to the bottom, hematocrit is the percentage of RBCs in a blood sample

Viscosity

Refers to thickness or stickiness of a fluid
Decrease in RBCs makes blood thinner (less viscous), causing faster blood flow
Increase in RBCs increases viscosity, leading to slower blood flow

Blood Cell Formation

Hematopoietic processes are responsible for blood cell production

Blood

Connective tissue composed of various cells and fluid, also known as fluid matrix
Functions:
- Transports oxygen, nutrients, hormones, enzymes, etc. throughout the body
- Removes waste products from body's cells
- Protects the body against infection
- Stabilizes body's acid-base balance
- Regulates body temperature

Plasma

Clear extracellular matrix of liquid connective tissue, accounts for 55% of blood
Main component is water

This quiz focuses on the hematopoietic tissues responsible for blood cell production and the components and functions of blood. You will explore the role of red bone marrow, lymphatic tissue, and the various elements of blood including plasma and formed elements. Test your knowledge on viscosity and hematocrit as well.