Question

QUESTION 1

1. Less than 1% of your blood contains white blood cells also known as _________________.

7.5 points   

QUESTION 2

1. What type of white blood cells are primarily involved in innate immunity and are capable of engulfing foreign pathogens?

7.5 points   

QUESTION 3

1. The portion of our blood that is mainly liquid and does not contain cells is called ______________.

7.5 points   

QUESTION 4

1. Where in the human body do all blood cells originate from? (Where are they being produced?)

7.5 points   

QUESTION 5

1. Which type of cell is responsible for generating all of the formed elements such as red blood cells and white blood cells? (These cells can differentiate into different cell types depending on the signal stimulus)

7.5 points   

QUESTION 6

1. The two primary precursor cell types for all white blood cells are myeloid cells and ______________ cells.

Answer 1

Answer :

1)

Leukocytes.

WBC are also called leucocytes. They are granulocytes or agranulocytes. RBC are major cells in blood.

2)

Macrophages. They are modified monocytes.

They are antigen presenting cells also. They are large enough for phagocytosis.

3)

Plasma. or Serum

Plasma is fraction of blood after anticoagulants are added. Serum is obtained after clotting. Plasma have no cells but fibrinogen but serum contains not even fibrinogen.

4)

Bone Marrow.

Blood cells are produced from bone marrow. In fetal life liver has got some role.

5)

Hematopoietic Stem Cells.

Hematopoietic stem cells can develop into erythroid or myeloid or lymphoid or megakaryocytic series in bone marrow.

6)

Lymphoid cells.

Myeloid can develop into erythrocytes, megakaryocytes, neutrophils, eosinophils, basophills or monocytes.

Lymphoid develop into T cells or B cells.