Red & White Blood cells & Platelets

Question 1

Erythrocytes

Answer 1

Red blood cells

Question 2

Shape and structure of erythrocytes

Answer 2

Biconcave disc; contain haemoglobin; No nucleus, ribosomes, mitochondria or other organelles.

Question 3

Primary component of erythrocytes

Answer 3

Haemoglobin (proteins and iron)

Question 4

Function of erythrocytes

Answer 4

Transport oxygen and some Co2 between tissues and lungs

Question 5

Leukocytes

Answer 5

White blood cells

Question 6

Types of leukocytes

Answer 6

Granulocytes and agranulocytes

Question 7

Types of granulocytes

Answer 7

neutrophils (most abundant), eosinophils, and basophils

Question 8

Function of leukocytes

Answer 8

Chiefly immune functions. Picking up debris, destroying foreign substances and promoting inflammation (basophils).

Question 9

Types of Agranulocytes

Answer 9

Lymphocytes and monocytes

Question 10

Platelet functions

Answer 10

Homeostasis plus release growth factors for repair and healing of tissue

Question 11

Erythropoiesis

Answer 11

Process of RBC formation

Question 12

Hormone that signals RBC production

Answer 12

Erythropoietin

Question 13

Hemocytoblasts

Answer 13

Stem cells for RBCs

Question 14

Stages of Erythropoiesis

Answer 14

Kidney detects low blood oxygen and produces hormone erythropoietin. Signal results in hemocytoblasts in red bone marrow specialising into RBC precursors which then become RBCs.

Question 15

Platelets

Answer 15

Irregularly shaped cell fragments. Needed for normal blood clotting. Initiate clotting cascade by clinging to torn area.