Mature RBCs lose their ability for
DNA replication
Anaerobic respiration
Aerobic respiration and DNA replication
Aerobic respiration, DNA replication and RNA synthesizing machinery
The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the labels along with their functions and select the correct option.
D - Dorsal aorta - takes blood from heart to body parts, PO2 = 95 mm Hg
A - Pulmonary vein - takes impure blood from body parts to heart, PO2 = 60 mm Hg
B - Pulmonary artery - takes blood from heart to lungs, PO2 = 90 mm Hg.
After examining the blood groups of husband and wife, the doctor advised them not to have more than one child. The blood groups of the couple are likely to be
Male Rh- and Female Rh+
Male Rh+ and Female Rh+
Male Rh+ and Female Rh-
Male Rh- and Female Rh-
Which of the following human organs is called the 'graveyard of RBCs?
Kidney
Spleen
Liver
Haemoglobin is
an oxygen carrier in human blood
a protein used as food supplement
an oxygen scavenger in root nodules
a plant protein with high lysine content
Which of the following matches correctly?
Factor II - Thromboplastin
Factor III - Prothrombin
Factor VIII - Antihaemophilic globulin
Factor XII - Haemophilic
The thread like tendons of papillary muscles inserted upon the flaps of tricuspid and bicuspid valves are
chordae tendinae
yellow elastin fibres
reticulate fibres
collagen fibres
Serum is-
Blood - corpuscles
Blood - corpuscles - clotting factors
Plasma - clotting factors
Both (2) and (3)
Match the following:
(i)
Fibrinogen
p.
Defence
(ii)
Globulin
q.
Osmotic balance
(iii)
Albumin
r.
Clotting
(i) → r, (ii) → p, (iii) → q
(i) → p, (ii) → r, (iii) → q
(i) → q, (ii) → p, (iii) → r
(i) → r, (ii) → q, (iii) → p
The universal donor and acceptor will be–
O– and AB–
O– and AB+
O+ and AB–
O+ and AB+
Which of the following are not correct:
(i) Spleen is the graveyard for RBC
(ii) All the mammals have biconcave RBCs
(iii) Clotting factors present in plasma are in active form.
(iv) All the substances released by platelets are involved in clotting only.
(i), (iii), (iv)
(ii), (iii), (iv)
(i), (ii), (iii), (iv)
(ii), (iii)
The condition of erythroblastosis foetalis is–
Rh– female and Rh+ male with first Rh+ baby
Rh+ female and Rh+ male with first Rh– baby
Rh+ female and Rh– male with first Rh– baby
Rh– female and Rh– male with first Rh+ baby
Lymph has following properties
(i) Same mineral distribution as that of plasma
(ii) Intestine also has lymph
(iii) Also known as tissue fluid because it helps in exchange
(iv) Lymph plays role in defence as well
How many statements are correct?
3
2
4
1
In open circulatory system, blood is pumped through
Sinuses to large vessels
Large vessels to sinuses
Cavities to organs
Spaces to large vessels
Consider the following statement with respect to heart:
(i) It has the double walled membranous bag.
(ii) Human heart has four chambers: two larger atria and two median ventricles.
(iii) Human heart is mesodermal in origin and is situated in abdominal cavity.
(iv) There is no clear separation between atria and ventricles.
How many of the statements given above are correct?
all are wrong
Inter atrial septa are:
thin muscular
thick muscular
thin fibrous
thick fibrous
Which one is incorrect in the following:
Inter atrial septa – thin and muscular
Atrio– ventricular septa – thick and fibrous
Inter ventricular septa – thick and muscular
Pericardium – muscular
SAN is present in __________ while AVN is present in __________.
Right upper corner and left lower corner of both the atria.
Right upper corner and left lower corner of right atrium.
Right upper corner and left lower corner of left atrium.
Right upper corner and left median corner of left atrium
Bundle of His includes:
Purkinje fibres + left AV bundle
Purkinje fibres + right AV bundle
Purkinje fibres + right and left AV bundle
SA node + AV node + AV bundle
Which one of the following is wrong with respect to nodal tissue.
auto excitable
not localized to a single chamber.
equal ability to excite throughout nodal tissue.
structural changes are observed throughout nodal musculature in different chambers of the heart.
The duration of cardiac cycle is–
0.8 second
0.5 second
0.3 second
0.4 second
The number of action potential generated by SAN:
70–75 times per minute.
50–72 times per minute.
Exact 70 times per minute.
not more than 60 times per minute.
The route of action potential in heart is
SA node – AV node – AV bundle
AV node – SA node – bundle of his – AV bundle
SA node – AV node – AV bundle – Bundle of His
SA node – AV node – Purkinje fibres
If the stroke volume of Human heart is considered 80 mL and to pump 5L of blood how many beats are required?
63
70
72
60
The lub sound of heart is produced during which phase of cardiac cycle?
ventricular systole
atrial diastole
joint diastole
atrial systole
The sequence of opening (O) and closing (C) of heart –valves are:
AV valves open before the closure of SL or semilunar valves.
AV valves close before the closure of SL or semilunar valves.
AV valves open after the closure of SL or semilunar valves.
AV valves close with closure of SL or semilunar valves.
The machine taking the reading of electrical activity of heart is known as
Electrocardiogram
Electrocardiograph
MRI
Biopsy
The results of ECG are known as
The standard ECG is obtained by connecting the patient to the machine with how many leads?
If one wants to analyse the detailed cardiac activity, the multiple leads are attached to–
Wrist and arms
Abdomen
Chest region
all the fingers
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