Colony-stimulating factors are hormones involved in the regulation of_______. A)
ID: 98362 • Letter: C
Question
Colony-stimulating factors are hormones involved in the regulation of_______. A) leukocytes B) erythrocytes C) platelets D) RBCs E) megakaryocytes The matrix of the blood, which has a density only slightly greater than water is called serum. Blood cells and cell fragments suspended in the liquid matrix are collectively called the formed elements. Membrane-enclosed enzyme packets are called platelets. Erythrocytes are the most abundant formed elements in the blood. Fibrinogens are the smallest of the plasma proteins. Lymphocytes are the most numerous leukocytes. Basophils assist mast cells of tissues in producing inflammation. Monocytes clump together to assist with hemostasis. Individuals with type B blood have plasma that contains anti-B antibodies. Basophils are granulocytes formed from myeloid stem cells.Explanation / Answer
33-A) leukocytes (white blood cells)
B And D options both mean red blood cells only and they are wrong because erythropoietin produces erythrocytes.
C is wrong because thrombopoietin regulates platelets
E is wrong because megakaryocyte is regulated by varrying concentration of platelets that is also dependent on the thrombopoietin.
34) False
PLASMA is the matrix of the blood that is slightly denser than the water.
Serum is plasma without fibrinogen.
35) false
Without liquid matrix it is called formed elements. It includes WBCs, RBCs and platelets.
36) True. They contain enzymes which are secreted during blood clotting.