NCERT Class 11 Biology Body Fluids and Circulation

BODY FLUIDS AND CIRCULATION

VERY SHORT ANSWER TYPE QUESTIONS

1. Name the blood component which is viscous and straw coloured fluid.

2. Complete the missing word in the statement given below:

   a. Plasma without _________ factors is called serum.

   b. ___________ and monocytes are phagocytic cells.

   c. Eosinophils are associated with _____ reactions.

   d. _______ ions play a significant role in clotting.

   e. One can determine the heart beat rate by counting the number of _________ in an ECG.

3.What physiological circumstances lead to erythroblastosis foetalis?

4. Name the vascular connection that exists between the digestive tract and liver.

5. Given below are the abnormal conditions related to blood circulation. Name the disorders.

   a. Acute chest pain due to failure of O2 supply to heart muscles

   b. Increased systolic pressure

6. Which coronary artery diseases is caused due to narrowing of the lumen of arteries?

7. Define the following terms and give their location?

   a. Purkinje fibre

   b. Bundle of His

8. State the functions of the following in blood

   a. Fibrinogen

   b. Globulin

   c. Neutrophils

   d. Lymphocytes

9. What physiological circumstances lead to erythroblastosis foetalis?

10. Explain the consequences of a situation in which blood does not coagulate.

11. What is the significance of time gap in the passage of action potential from sino-atrial node to the ventricle?

12. How will you interpret an electrocardiogram (ECG) in which time taken in QRS complex is higher.

SHORT ANSWER TYPE QUESTIONS

1. The walls of ventricles are much thicker than atria. Explain.

2. Differentiate between

   a. Blood and Lymph

   b. Basophils and Eosinophils

   c. Tricuspid and bicuspid valve

3. Briefly describe the followings:

   a. Anaemia

   b. Angina Pectoris

   c. Atherosclerosis

   d. Hypertension

   e. Heart failure

   f. Erythroblastosis foetalis

4. Explain the advantage of the complete partition of ventricle among birds and mammals and hence leading to double circulation.

5. What is the significance of hepatic portal system in the circulatory system?

6. Explain the functional significance of lymphatic system?

7. Write the features that distinguish between the two

   a. Plasma and Serum

   b. Open and closed circulatory system

   c. Sino-atrial node and Atrio-ventricular node

8. Thrombocytes are essential for coagulation of blood. Comment.

9. Answer the following

  a. Name the major site where RBCs are formed.

  b. Which part of heart is responsible for initating and maintaining its rhythmic activity?

  c. What is specific in the heart of crocodiles among reptilians?

Please refer to attached file for NCERT Class 11 Biology Body Fluids and Circulation