Blood Formed Elements

Question 1

The process of blood formation is known as?

Answer 1

Haemopoiesis

Question 2

In the embryo, haemopoiesis occurs in the_____ and later in the _____, _____, and ______

Answer 2

Yolk sac
Liver
Spleen
Lymph nodes

Question 3

After birth, haemopoiesis occurs in the _______ of different bones

Answer 3

Red marrow

Question 4

Haemopoietic stem cells are called?

Answer 4

Pluripotential haemopoietic

Question 5

Haemopoietic stem cells are found in the _______ and give rise to all the blood cells of the body except lymphocytes

Answer 5

Red bone marrow

Question 6

Lymphocytes are formed mainly in?

Answer 6

lymphoid tissues

Question 7

The result of simultaneous, continuous proliferation and differentiation of cells derived from stem cells whose potentials are reduced as differentiation progresses is called?

Answer 7

Haemopoiesis or Haematopoiesis

Question 8

Large precursor cells of erythrocytes succeeded by early erythroblasts are called?

Answer 8

Proerythroblasts(1st stage)

Question 9

In formation of erythrocytes, slightly smaller cells that contain basophilic cytoplasm and no haemoglobin are called?

Answer 9

Early/basophilic erythroblasts(2nd stage)

Question 10

In formation of erythrocytes, cells that some haemoglobin, eosinophilic and basophilic cytoplasmic areas are called?

Answer 10

Intermediate/polychromatic erythroblasts(3rd stage)

Question 11

In formation of erythrocytes, cells that contain more haemoglobin and acidophilic cytoplasm are called?

Answer 11

Final/acidophilic erythroblasts(4th stage)

Question 12

In formation of erythrocytes, cells that have a reticular appearance in cytoplasm produced by RNA remaining in it are called?

Answer 12

Reticulocytes(5th stage)

Question 13

In formation of erythrocytes, cells that lose their reticulum and mature are called?

Answer 13

Erythrocytes(6th stage)

Question 14

Precursor cells of blood platelets are called?

Answer 14

Megakaryoblasts(1st stage)

Question 15

In formation of platelets, cells that arise from enlargement of megakaryoblasts are called?

Answer 15

Promegakaryocytes(2nd stage)

Question 16

In platelets formation, cells that arise from enlargement of Promegakaryocytes are called?

Answer 16

Megakaryocytes(50-100 micrometer with multi-lobed nucleus)[3rd stage]

Question 17

In platelets formation, cells formed by separation of small masses of cytoplasm from megakaryocytes are called?

Answer 17

Platelets(4th/final stage)

Question 18

Precursor of neutrophil, Eosinophil and basophil is?

Answer 18

Myeloblast(1st stage)

Question 19

In granulocytes formation, larger matured myeloblast marked by the presence of lysosomes(large granules) in its cytoplasm is called?

Answer 19

Promyelocyte(basophilic cytoplasm)[2nd stage]

Question 20

In granulocytes formation, cells that arise from promyelocyte with smaller and specific granules are called?

Answer 20

Myelocyte(enables recognition of neutrophil, Eosinophil & basophil)[3rd stage]

Question 21

An intermediate stage for granulocytes before maturation in which the nucleus is elongated but not yet polymorphic is called?

Answer 21

Band stage

Question 22

The early stage in the formation of Monocytes is called?

Answer 22

Monoblasts(1st stage)

Question 23

In monocytes formation, the next stage after monoblasts is called?

Answer 23

Promonocytes (2nd stage)

Question 24

The third stage in formation of Monocytes is?

Answer 24

Monocytes

Question 25

Monocytes mature into?

Answer 25

Macrophages

Question 26

Precursor cells of lymphocytes are called?

Answer 26

Lymphoblasts(large cells capable of dividing 2 or 3 times to form lymphocytes)[1st stage]

Question 27

The second stage of lymphocytes formation is called?

Answer 27

Prolymphocyte

Question 28

The third stage of lymphocytes formation is called?

Answer 28

Large lymphocyte

Question 29

The large lymphocyte divides into?

Answer 29

Pre-B cells and Prothymocyte

Question 30

Pre-B cells differentiate into?

Answer 30

B lymphoblast

Question 31

Prothymocyte differentiate into?

Answer 31

T lymphoblast

Question 32

B lymphoblast and T lymphoblast differentiate into_______ & ________ respectively?

Answer 32

B lymphocyte & T lymphocyte

Question 33

B lymphocyte differentiates into?

Answer 33

Plasma cell