Animal Physiology MCQs Part V

1) The amount of air that
moves in or out of
the lung with a single breath is the

a) residual volume
b) tidal volume
c) vital capacity
d) inspiration and expiration

2) R.Q. of carbohydrates

a) 0.87
b) 1.5
c) 1.0
d) 4

3) At the time of inspiration
in mammals, the diaphragm

a) contract
b) expand
c) relax
d) show no change

4) The impulse for
voluntary breathing
starts in the

a) cerebral hemisphere
b) medulla
c) vagus nerve
d) facial nucleus

5) The medullary respiratory
centre is directly

a) chemically
b) physically
c) by both above manner
d) none of the above

6) The number of ATP
produced by a molecule
of sucrose during
anaerobic respiration

a) 4
b) 8
c) 36
d) 38

7) Energy is released
by the breakdown of

a) ATP
b) NAD
c) FAD
d) All

8) The process in which chloride ion pass
into the R.B.C. and bicarbonate
ions pass out is called the

a) bicarbonate shift
b) chloride shift
c) enzyme shift
d) buffer system

9) In ertebrate the
is transported as

a) absorbed on surface RBC
b) complexed with Hb
c) dissolved in plasma
d) all of the above

10) Which of the
following cycles
operate in mitochondria?

a) Anaerobic respiration
b) EMP pathway
c) Fermentation
d) TCA cycle

11) The respiratory
quotient for protein

a) 1.2
b) 1
c) 0.8
d) 0.71

12) In arthropoda the
respiratory pigment

a) haemoglobin
b) haemocyanin
c) haemoerythrin
d) all of the above

13) Which is the end
product of glycolysis?

a) pyruvic acid
b) acetyl Co A
c) lactic acid
d) citric acid

14) The functional
units of the lungs

a) trachea
b) bronchi
c) bronchioles
d) alveoli

15) Respiration
in whales is by

a) gills
b) lungs
c) buccal cavity
d) gill books

16) The other name
of glycolysis
is the

a) EMP pathway
b) TCA pathway
c) HMS pathway
d) None of the above

17) We get our major
supply of energy
from glucose via

a) fat metabolism
b) lactic acid
c) pyruvic acid

18) Glycolysis is
a part of

a) only anaerobic respiration
b) only aerobic respiration
c) both aerobic and anaerobic respiration

19) In a normal man the cardiac output is
a) 4 litres
b) 5 litres
c) 70ml

d) 3 litres

20) The pulse pressure of a normal adult is ……. mm/Hg
a) 40
b) 60
c) 80
d) 120

21) Regarding human hemoglobin, which of the following statement is true?
a) When the immunoglobin and haemoglobin fractions are separated, the haem group can bind oxygen reversibly .
b) Different haemoglobins contain an identical haem group but differ in the character of the globin fraction.
c) The haemoglobin of adult humans consists of four identical subunits and a single haem group.
d) All the haemoglobin molecules in any one species are identical.

22) The gland which regulates the level of calcium in the blood is the
a) thyroid
b) adrenal
c) parathyroid
d) pituitary

23) The main function of lymphocytes is
a) to destroy poisonous substance present in the body
b) to clot the blood at the site of a wound
c) to carry oxygen to different parts of the body
d) to destroy bacteria

24) Leucopenia is
a) uncontrolled WBC
b) uncontrolled RBC
c) excess platelets
d) less production of WBC

25) The immunoglobulins whose level is maximum in the body are
a) lgG
b) lgM
c) lgA
d) lgE

26) 100 ml of the blood carries …. ml of
a) 15-30
b) 10-20
c) 15-20
d) 20-25

27) Deficiency of iron causes ….. anaemia
a) septicaemia
b) haemorrhagic
c) hypochromic
d) sickle cell

28) ECG is the twchnique to detect
a) heart attack
b) heart block
c) coronary thrombosis
d) all the above

29) The phrenic artery of mammals supplies blood to the
a) ribs
b) diaphragm
c) intercostal muscles
d) Intestine

30) The gas which makes the most stable combination with RBC haemoglobin is
c) CO

31) Ventricular systole takes ….. seconds
a) 0.5
b) 0.3
c) 0.8
d) 0.1

32) The anticoagulant used to store blood in the blood bank is
a) sodium citrate
b) sodium fluoride
d) Acid citrate dextrose

33) A heart attack involves a blockage of the
a) carotid artery
b) aorta
c) pulmonary vein
d) coronary arteries

34) The smallest blood cell is the
a) erythrocyte
b) monocyte
c) thrombocyte
d) lymphocyte

35) The following is an anticoagulant:
a) citrate and oxalate
b) dicumarol
c) heparin
d) all the above

36) Each erythrocyte takes about …….rounds of body before its death
a) 50
b) 100
c) 50,000
d) 10,000

37) The two principal veins which return the blood from the hind limb of a frog are the
a) pelvic and sacral
b) femoral and tibial
c) sciatic and femoral
d) sciatic and pelvic

38) The amount of pericardial fluid in human beings is
a) 10 ml
b) 15 ml
c) 20 ml
d) 125 ml

39) An ECG records the
a) rate of heart beat
b) volume of blood pumped
c) heart diseases
d) potential difference of cardiac muscle

40) The mitral valve in mammals guards the opening of the
a) stomach into the intestine
b) right atrium into the right ventricle
c) left atrium into the left ventricle
d) stomach into the duodenum

41) QRST stands for
a) auricular systole
b) ventricular systole
c) auricular diastole
d) cardiac cycle

42) A person met with an accident and died instantaneously without any injury to heart, brain, stomach or kidney; one of these must be the reason:
a) The diaphragm was punctured
b) The stomach stopped digestion
c) The intestine got twisted
d) RBCs were coagulated

43) Which of the following are major phagocytic cells?
a) Lymphocytes
b) Mast cells
c) Macrophages
d) Plasma cells

44) The blood pressure of a healthy person is approximately …… mm/Hg
a) 90/60
b) 200/130
c) 120/80
d) 140/60

45) One of the following cells cannot respire:
a) epidermal
b) intestinal
c) erythrocytes
d) leucocytes

46) One of the following is the characteristic feature of leucocytes:
a) anucleated
b) diapedesis
c) agranular cytoplasm
d) coloured

47) The heartbeat is initiated by the
a) SA node
b) Purkinje fibres
c) AV- node
d) Bundle of His

48) Carbonic anhydrase is found in the
a) WBC
b) RBC
c) Blood plasma
d) Blood platelets

49) The opening of auricles and ventricles on the right side is guarded by the
a) tricuspid valve
b) bicuspid valve
c) semilunar valve
d) Eustachian valve

50) The mesodermal cavity where blood is present is a
a) pseudocoel
b) spongocoel
c) haemocoel
d) enterocoel

51) An open circulatory system occurs in
a) Reptiles
b) man
c) animals
d) insects

52) The pH of arterial blood is
a) 6.0
b) 7.0
c) 7.8
d) 7.4

53) In which form is mostly carried by blood?
a) Bicarbonate ions
b) Carbonic acid
c) Carbaminocompound
d) Carboxyhaemoglobin

54) The movement of neutrophils to the site of inflammation is due to
a) release of hormones
b) chemotaxis
c) activity of antigens
d) activations of antigens

55) The life span of a human RBC is about
a) 45 days
b) 80 days
c) 120 days
d) 180 days

56) Which of the following cells secrete histamine?
a) mast cells
b) macrophages
c) Kupfer cells
d) all of these

57) A cardiac cycle in man takes about
a) 0.5 seconds
b) 1.0 second
c) 1.2 second
d) 0.8 second

58) The post -caval vein collects blood from the
a) hind limbs
b) hind limbs and organs of the body cavity
c) body cavity organs
d) renal organs

59) The tricuspid valve prevents the flow of blood from the
a) Right auricle to the precaval vein
b) Right auricle to the post caval vein
c) Left ventricle to the left auricle
d) Right ventricle to the right auricle

60) Venous blood from the different regions of the body is brought to the heart by the
a) innominate and anterior abdominal
b) subclavian alone
c) vena cavae
d) anterior abdominal alone

61) Renal portal system is absent in
a) birds
b) reptiles
c) amphibians
d) mammals

62) The shoulder and forelimb are connected to the heart by the
a) dorsal aorta
b) subclavian artery
c) oesophageal
d) occipitovertebral

63) In which form is iron present in hemoglobin?
a) Ionic
b) Unionic

64) Red pulp and white pulp tissue are the parts of the
a) muscle fibre
b) lymph layer
c) spleen
d) lymph nodules

65) The right auricle of the mammalian heart releases blood through the
a) tricuspid valve
b) vena cava
c) pulmonary aorta
d) mitral valve

66) The life span of a human WBC is approximately
a) less than 10 days
b) between 20 to 30 days
c) between 2 to 3 months
d) more than 4 months

67) If the heart is perfused with acetylcholine it will cause
a) alternate increase and decrease in the heart beat
b) no change in the heart beat
c) decrease in the heart beat
d) increase in the heart beat

68) The precaval vein is formed of the
a) external jugular and innominate
b) innominate and subclavian
c) external jugular, innominate and subclavian
d) external jugular and subclavian

69) The pacemaker of the heart is situated
a) in the wall of the left atrium close to the opening of the pulmonary veins
b) in the wall of the right atrium close to the Eustachian valve
c) on the interauricular spetum
d) on the interventricular septum

70) Haemoglobin is found dissolved in the plasma of
a) Earthworms
b) Birds
c) Frogs
d) Man

71) Albumin, fibrinogen, prothrombin are manufactured in the
a) bone marrow
b) spleen
c) liver
d) pancreas

72) The hypophysial portal system is found in the
a) Kidney
b) Liver
c) Brain
d) Heart

73) Megakaryocytes give rise to
a) erythrocytes
b) granulocytes
c) agranulocytes
d) Platelets

74) Thromboplastin required for blood clotting is secreted by
a) eruthrocytes
b) monocytes
c) lymphocytes
d) platelets

75) Blood pressure is defined as
a) the force with which blood pushes against the wall of the blood vessels
b) the force with which blood is pushed to the legs
c) the force with which blood comes out of the atrium
d) the force with which blood comes out of the ventricle

76) Lymph is modified blood that contains
a) RBC and WBC
b) RBC , WBC and protein
c) WBC and all the proteins
d) All the contents of blood except RBCs and certain proteins

77) Number of RBC in man (per )

a) 5,000
b) 50,000
c) 5,00,000
d) 5,000,000

78) Immunoglobulins are produced by
a) Lymphocytes
b) Spleen
c) Leucocytes
d) Monocytes

79) Chordae tendinae are found in the
a) joints of the legs
b) atria of the heart
c) ventricles of the brain
d) ventricles of the heart

80) The largest sized heart is found in the
a) elephant
b) giraffe
c) crocodile
d) lion

81) The role of the spleen in mammals is
a) to control blood pressure
b) to assist the liver
c) to act as haemopoietic tissue
d) to assist the kidneys

82) The innermost coat of the wall of an artery is called the
a) tunica interna
b) tunica media
c) tunica adventia
d) endothelium

83) The mitral (bicuspid ) valve in mammals guards the opening between the
a) left auricle and left ventricle
b) pulmonary vein and left auricle
c) stomach and intestine
d) liver and spleen

84) Formation of blood is called
a) hemolysis
b) hemopoiesis
c) plasmolysis
d) anoxemia

85) If a reduced supply
weakens the heart cells but does not actually kill them the condition
is called

a) myocardial infarction
b) tachycardia
c) bradycardia
d) ischemia

86) The thin membranous wall, between the pericardial cavity and the pleuroperitoneal
cavity is the

a) diaphragm
b) mediastinal septum
c) septum transversum
d) septum cardiosum

87) The correct route through which the pulse- making impulse travels in
the heart is

a) AV node, bundle of His , SA node, Purkinje fibres , heart muscle
b) AV node, SA node, Purkinje fibres, bundle of His, heart muscle
c) SA node, Purkinje fibres, bundle of His, AV node, heart muscle
d) SA node, AV node, Bundle of His, Purkinje fibres, heart muscle

88) For clotting of blood, which of the following is necessary?
a) Na and K ions
b) Na and prothrombin
c) Ca and thromboplastin
d) Na and thromboplastin

89) At high altitude, the RBCs in the human blood will
a) decrease in size
b) increase in number
c) decrease in number
d) No change

90) The lymph serves to
a) transport
to the lungs

b) transport to
the brain

c) return the interstitial fluid to the blood
d) return the WBCs and RBCs to the lymph nodes

91) Diapedesis is the
a) Formation of pus
b) Bursting of WBC
c) Formation of WBC
d) Passage of WBCs

92) The blood vascular system of mammals is known as a double vascular
system because

a) a group of vessels carries oxygenated blood and another group conducts deoxygenated blood
b) oxygenated blood runs from the heart to different organs by arteries, while deoxygenated blood goes to the lungs
c) the two different systems never meet
d) all of these

93) The three – chambered heart in the frog is not as efficient as the human
heart with four chambers because

a) the muscle of the heart are not strong
b) both oxygenated and deoxygenated blood mix in the ventricle
c) the ventricle cannot pump blood properly
d) It cannot hold enough blood

94) Blood platelets are found only in the blood of
a) reptiles
b) birds
c) mammals
d) amphibians

95) The neurogenic heart is the characteristic feature of
a) rats
b) rabbits
c) humans
d) lower vertebrates

96) Purkinje fibres are found in the
a) brain
b) conduction system of the heart
c) nephrons of the kidneys
d) sense organs of skin

97) Cardiac output is defined as the amount of blood
a) received by the heart in one minute
b) pumped by each ventricle per minute
c) pumped by both ventricles per second
d) pumped by the left atrium per hour

98) Which of the following carries oxygenated blood?
a) Renal vein
b) Hepatic portal vein
c) Pulmonary artery
d) Pulmonary vein

99) Which of the following carries blood rich in food materials, such
as glucose and amino acids, from the intestine to the liver?

a) Dorsal aorta
b) Mesenteric artery
c) Renal portal vein
d) Hepatic portal vein

100) Which of the following has a closed type of circulatory system?
a) cockroach
b) fish
c) scorpion
d) limulus


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