Solution of Chapter 18. Body Fluids and Circulation (Biology - Exemplar Book)

Which of the following cells does not exhibit phagocytotic activity?

One of the common symptoms observed in people infected with Dengue fever is

Which among the followings is correct during each cardiac cycle?

Cardiac activity could be moderated by the autonomous neural system. Tick the correct answer:

Mark the pair of substances among the following which is essential for coagulation of blood.

ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.

Which one of the following types of cells lack nucleus in humans?

Which one of the following blood cells is involved in antibody production?

The cardiac impulse is initiated and conducted further upto ventricle. The correct sequence of conduction of impulse is

The cells involved in inflammatory reactions are

The second heart sound (dubb) is associated with the closure of

Which of the following correctly explains a phase/ event in cardiac cycle in a standard electrocardiogram?

Which of the following statements is incorrect?

What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 ml?

Match the terms given under Column ‘A’ with their functions given under Column ‘B’ and select the answer from the options given below:

Options:

Read the following statements and choose the correct option

Statement 1 : Atria receive blood from all parts of the body which subsequently flows to ventricles.

Statement 2 : Action potential generated at sino-atrial node passes from atria to ventricles.

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

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.

Given below is the diagrammatic representation of a standard ECG. Label its different peaks.

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

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

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

Define the following terms and give their location?

a. Purkinje fibre

b. Bundle of His

State the functions of the following in blood

a. Fibrinogen

b. Globulin

c. Neutrophils

d. Lymphocytes

What physiological circumstances lead to erythroblastosis foetalis?

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

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

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

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

Differentiate between

a. Blood and Lymph

b. Basophils and Eosinophils

c. Tricuspid and bicuspid valve

Briefly describe the followings:

a. Anaemia

b. Angina Pectoris

c. Atherosclerosis

d. Hypertension

e. Heart failure

f. Erythroblastosis foetalis

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

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

Explain the functional significance of lymphatic system?

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

Thrombocytes are essential for coagulation of blood. Comment.

Answer the following

a. Name the major site where RBCs are formed.

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

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

Explain Rh-incompatibility in humans.

Describe the events in cardiac cycle. Explain “double circulation”.

Explain different types of blood groups and donor compatibility by making a table.

Write short note on the following

a. Hypertension:

b. Coronary Artery Disease:

In the diagrammatic presentation of heart given below, mark and label, SAN, AVN, AV bundles, bundle of His and Purkinje fibres