BODY FLUIDS AND CIRCULATION
2020 MARCH
1. Observe
the Diagram. (Score 3)
(a) What does it denote?
(b) What do P, QRS, T
represent?
(c) What is its clinical
significance?
✔️Answer:
(a) Electrocardiogram (ECG).
(b) P wave: Depolarization of atria.
QRS wave: Depolarization of ventricles.
T-wave: Repolarization of ventricles.
(c) It is used to find out the deviation or abnormality of functioning
of heart.
2019 JULY
1. (a)
Make a flowchart showing cardiac impulse conduction using appropriate terms
given in bracket. (Score 2)
[SAN, Right atrium, AVN, AV Bundle, Bundle
of His, Ventricle]
(b)
Which part known as pacemaker?
✔️Answer:
(a) SAN → Right atrium →
AVN → AV Bundle → Bundle of His → Ventricle.
(b) SA node (SAN)
2. Blood
coagulation, is a mechanism to prevent the excessive loss of blood. (Score 3)
(a) Identify the enzyme help the conversion of inactive fibrinogen.
(b) Mention the role of thrombokinase.
(c) Which ion is necessary for blood clotting?
✔️Answer:
(a) Thrombin
(b) Activates prothrombin to thrombin.
(c) Calcium ions.
2019 MARCH
1. Diagrammatic
representation of a standard ECG is given below. (Score 3)
(a) Expand ECG.
(b) What does ‘P’,’T’ waves denote?
(c) Mention the clinical significance of ECG?
✔️Answer:
(a) Electrocardiogram.
(b) P wave: Depolarization of atria.
T-wave: Repolarization of ventricles.
(c) It is used to find out the deviation or abnormality of functioning
of heart.
2. a)
Person with 'AB' blood group is called 'universal recipient'. Give a
reason"
b) List out any two disorders of human circulatory system. (Score 2)
✔️Answer:
a) AB blood group has no antibodies. So
AB group persons can receive blood from other groups.
b) Hypertension, Coronary artery disease.
2019 MODEL
1. Copy
the table and fill in the gap with appropriate words. (Score 3)
|
Blood cell |
Type of
cell |
Classification |
Function |
|
...?... |
Granulocyte |
...?... |
Phagocytosis |
|
Basophil |
...?... |
||
|
...?... |
Lymphocyte |
...?... |
|
|
Monocyte |
...?... |
✔️Answer:
|
Blood cell |
Type of cell |
Classification |
Function |
|
WBC |
Granulocyte |
Neutrophil |
Phagocytosis |
|
Basophil |
Inflammatory reactions |
||
|
Agranulocytes |
Lymphocyte |
Immune response |
|
|
Monocyte |
Phagocytosis |
2.
(a) Name the above two diagram A and B.
(b) Write one example for each in which they belong.
(c) The blood-filled cavity of cockroach is known as ………… (Score 3)
✔️Answer:
(a) A= Open circulatory system.
B=
Closed circulatory system.
(b) Open circulatory system. E.g.
Cockroach.
Closed
circulatory system. E.g. Earthworm.
(c) Haemocoel.
2018 AUGUST
1. Plasma
without clotting factor is called …… (Score 1)
✔️Answer: Serum
2. Classify
the following terms under two suitable headings. (Score 2)
Neutrophil, Monocyte, Eosinophil,
Lymphocyte
✔️Answer:
Granulocytes: Neutrophil, Eosinophil.
Agranulocytes: Monocyte, Lymphocyte.
2018 MARCH
1. Diagrammatic
representation of a standard ECG is given below: (Score 2)
a)
What does the QRS complex denotes?
b) Mention the clinic al significance of ECG.
✔️Answer:
(a) Depolarization
of ventricles.
(b) It
is used to find out the deviation or abnormality of functioning of heart.
2. Match
the terms in column A with those in columns B and C. (Score 3)
|
A |
B |
C |
|
a) Neutrophils |
2 – 3% |
Immune response |
|
b) Eosinophils |
20 – 25% |
Phagocytic |
|
c) Lymphocytes |
60 – 65% |
Allergic reaction |
✔️Answer:
|
A |
B |
C |
|
a) Neutrophils |
60 – 65% |
Phagocytic |
|
b) Eosinophils |
2 – 3% |
Allergic
reaction |
|
c) Lymphocytes |
20 – 25% |
Immune response
|
2018 MODEL
1. Fill
in the blanks suitably. (Score 3)
✔️Answer:
(a) Granulocytes
(b) Basophils
(c) Monocytes
(d) Lymphocytes
(e) Resist
infections
(f) Immune
responses
2017 MARCH
1. a) Select the
correct statement regarding with ECG of man. (Score 1)
i) P-wave represents auricular repolarization
ii) P-wave represents ventricular
repolarization
iii) P-wave represents auricular depolarization
iv) P-wave represents ventricular depolarization
b) Observe the
diagram and label A, B, C & D. (Score 2)
✔️Answer:
(a) (iii) P-wave represents auricular
depolarization
(b) A= Aorta, B= Superior vena cava.
C= Pulmonary
artery, D= Chordae tendinae.
2016 MARCH
1. Longitudinal section of the human heart showing
internal structure is given below. Observe the diagram and answer the following
questions: (Score 3)
a) Label the parts marked as A, B, C.
b) Draw a flowchart to show double circulation.
✔️Answer:
(a) A= Aorta, B= Semilunar valve, C= Left ventricle
(b)
OR
“Sinoatrial Node is called pace maker of our heart.”
a) Justify the statement.
b) Define cardiac cycle and cardiac output.
✔️Answer:
(a) SAN initiates and maintains contraction of heart by
generating action potentials. So, it is called the pacemaker.
(b) Cardiac cycle: It is the cyclic contraction
and relaxation of heart for pumping blood.
Cardiac output:
It is the volume of blood pumped out by each ventricle per minute.
SEPTEMBER 2015 (IMPROVEMENT)
1. Make a diagrammatic sketch of human double
circulation. Label three associated organs and any one blood vessel. (Score 3)
✔️Answer:
OR
Name the two types of heart valves and mention their
functions. (Score 3)
✔️Answer:
Tricuspid valve and bicuspid (mitral) valve: They allow the
flow of blood only in one direction, i.e. from atria to ventricles.
Semi-lunar valves: Present at the opening of pulmonary artery and aorta. They prevent
backward flow of blood.
2015 MARCH
1. Find the odd one and write the function. (Score 1)
Neutrophil, Erythrocyte,
Monocyte, Lymphocyte, Basophil, Eosinophil
✔️Answer:
Erythrocyte: Function is the transport of oxygen and
CO2.
2. Observe the flowchart and answer questions given
below.
a. Draw the flow chart correctly.
b. What will happen if the SA node is not working
properly? (Score 2)
✔️Answer:
(a)
