
Define agranulocytes.
Important Questions on Tissues
Give appropriate biological or technical terms for the following:
The relaxation phase of the heart.



(v) Pulmonary semilunar valve


Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong:




A. Platelets are produced in the bone marrow.
B. When haemoglobin combines with oxygen it forms carboxy haemoglobin.
C. Calcium ions play an important role in clotting of blood.
D. Fibrins are formed by the conversion of fibrinogen by the enzyme thrombin.


Choose the correct answer from the four options given below:
Agranulocytes are:


Choose the correct answer from each of the four options given below:
A muscular wall is absent in:

Draw the diagram showing the sectional view of the human heart. Label the following parts.
(i) Aorta
(ii) Chamber of the heart that receives deoxygenated blood.

Name the following:
The smallest blood vessels with one cell thick walls.



Give appropriate biological or technical terms for the following:
Squeezing out of white blood cells from the capillaries into the surrounding tissues.


