Animal Physiology MCQs Part 8

1) The substance completely reabsorbed
under normal conditions in the renal
tubules is

a) Salts
b) Urea
c) Glucose
d) Water

2) Which of the following substances
is totally reabsorbed through renal
tubules?

a) Na
b)
c) K
d)

3) In the
tadpole, nitrogenous waste material
is excreted mainly in the form of

a) Urea
b) Uric acid
c) Ammonia
d) Amino acid

4) The ornithine cycle refers to the
sequence of reactions taking place
in the

a) Oral cavity
b) Liver
c) Pancreas
d) Stomach

5) The main function of the kidney
is

a) ultra – filtration
b) passive absorption
c) selective reabsorption
d) both a and c

6) One of the following is not
a disorder associated with excretion:

a) gout
b) filaria
c) uremia
d)

7) Which of the following pairs
is correctly matched?

a) water vascular system- sponge
b) flame cell-flatworm
c) Blubber – Kangaroo
d) Marsupium -platypus

8) The functional kidney of a frog
tadpole is

a) archinephrons
b) pronephrons
c) mesonephrons
d) metanephrons

9) Two examples in which the nitrogenous
wastes are excreted from the body
in the form of uric acid are

a) insects and bony fishes
b) mammals and molluscs
c) birds and lizards
d) frogs and cartilaginous fishes

10) If excess water passes out from
the tissue, without being restored
by the kidneys, the cells would

a) not be affected at all
b) shrivel and die
c) burst open and die
d) take water from the plasma

11) In bird faeces, faeces
is actually the black part. The
white part is a substance called

a) urea
b) ammonia
c) uric acid
d) faecal material and urea

12) Reabsorption of chloride ions
from the glomerular filtrate in the kidney tubules of mammals is ca

a) osmosis
b) diffusion
c) active transport
d) Brownian movement

13) Aquatic reptiles are
a) ammonotelic
b) ureotelic on land
c) ureotelic
d) ureotelic in water

14) Aquatic amphibians are ammonotelic
in the

a) larval stage
b) immature stage
c) adult stage
d) both a and b

15) Which condition do we call diuresis?
a) Elimination of excessive urea in urine
b) Loss of excessive water in urine
c) Kidney disease
d) No urination

16) Which of these processes is
not involved in kidney function?

a) ultrafiltration
b) Tubular reabsorption
c) Tubular secretion
d) Phagocytosis

17) The excretory product in insects is
a) uric acid
b) urea
c)
d) amino acid

18) The morphological and physiological
unit of the vertebrate kidney
is the

a) ureter
b) nephridium
c) seminiferous tubule
d) uriniferous tubule

19) In ammonotelism the nitrogen
is excreted by

a) ammonia
b) urea
c) uric acid crystals
d) trimethylamine oxide

20) Excretory product of the terrestrial
mosquito is

a) urea
b) uric acid
c) ammonia
d) amino acids

21) The excretory system of Ascaris
is

a) V shaped
b) H shaped
c) Y shaped
d) None

22) The Malphigian body is found
in the

a) cortex
b) medulla
c) both
d) none

23) The term nephron is used
with reference to the

a) liver
b) heart
c) spleen
d) kidney

24) Glucose and 80% water is
reabsorbed in the

a) proximal convoluted tubule
b) loop of Henle
c) distal convoluted tubule
d) collecting tubule

25) Which of the following
is completely reabsorbed from
the filtrate in the renal tubules under normal conditions?

a) Uric acid
b) Salts
c) Glucose
d) Urea

26) In Entamoeba histolytica
there is/are

a) a single contractile vacuole
b) no contractile vacuoles
c) many contractile vacuoles
d) one or many vacuoles depending on the concentration of water

27) Osmoregulation in fresh
water protistans is done by the

a) contractile vacuole
b) labopodia
c) pseudopodia
d) nucleus

28) The substance excreted
by sebaceous glands is

a) sebum
b) NaCl
c) Lactic acid
d) All of these

29) The excretory organs of crustaceans
are

a) uriniferous tubules
b) green glands
c) coxal gland
d) malphigian tubules

30) Which system is H-shaped
in Ascaris?

a) Respiratory
b) Nervous
c) Reproduction
d) Excretion

31) Filtration takes place in the
a) renal cortex
b) loop of Henle
c) renal pelvis
d) renal papilla

32) Uricotelism in animals
is associated with

a) energy requirement
b) food habits
c) conservation of water
d) none of the above

33) A pregnant woman can experience
a) Glycosuria
b) Gout
c) hemoglobinuria
d) Nephritis

34) Joints are lubricated by the secretion of the
a) Epidermis
b) Dermis
c) Tympanic membrane
d) Synovial membrane

35) The biceps and triceps muscles are found in the
a) Forearm
b) Shank
c) Shoulder
d) upper arm

36) Chordae tendinae are found in the
a) Auricles of the heart
b) Ventricles of the heart
c) Joints
d) Brain

37) The muscle of the heart is
a) Voluntary striated
b) Voluntary smooth
c) Involuntary striated
d) Involuntary smooth

38) The muscle contraction of shortest duration is seen in the
a) Jaws
b) Eyelids
c) Heart
d) Intestine

39) Muscle fatigue occurs due to accumulation of
a)
b) Lactic acid
c) Creatine phosphate
d) Myosin ATPase

40) The articulation of the femur and pelvic girdle is an example of
a) Gliding joint
b) Pivot joint
c) Hinge joint
d) Ball and socket joint

41) In which part of the body are the strongest muscles present?
a) Arm
b) Jaw
c) Neck
d) Thigh

42) Unstriped muscles are present in the
a) Heart
b) Neck
c) Thigh
d) Urinary bladder

43) The condition of rigor mortis when the muscles do not relax and become stiff, is due to a fall in concentration of
a) Myosin
b) Relaxin
c) Actin
d) ATP

44) The apparatus used in recording muscle contraction is the
a) Kymograph
b) Electrocardiograph
c) Electroencephalograph
d) All the above

45) Which of the following is the contractile protein of a muscle?
a) Myosin
b) Tropomyosin
c) Actin
d) All of the above

46) The limb muscles of man are
a) voluntary
b) Involuntary
c) Both voluntary and involuntary
d) None of the above

47) The dark bands (A-Bands) of a skeletal muscle are known as
a) Isotropic bands
b) Anisotropic bands
c) Intercalated discs
d) Cross bridges

48) Ciliary muscles are found in the
a) Diaphragm of a mammal
b) Eyes of vertebrates
c) Heart of vertebrates
d) Stomach of frog

49) The knee joint in between the thigh and the lower leg is a
a) Hinge joint
b) Gliding joint
c) Pivot joint
d) Fixed joint

50) Our wrist joint is a
a) Hinge joint
b) Gliding joint
c) Pivot joint
d) Fixed joint

51) The functional unit of the contractile system in the striped muscle is a
a) Z-band
b) A-band
c) Myofibrils
d) Sarcomere

52) The longest visceral muscles are found in the
a) Vas deferens
b) Normal uterus
c) Pregnant uterus
d) Abdomen

53) Intercostal muscles are found in the
a) Fingers
b) Thoracic ribs
c) Femur
d) Radius and ulna

54) The wave of muscular contraction which pushes food along the alimentary canal is known as
a) Absorption
b) Digestion
c) Peristalsis
d) Secretion

55) Which one of the following is a viral diseases that weakens the muscles?
a) Atrophy
b) Poliomyelitis
c) Dystrophy
d) Duchenne dystrophy

56) Papillary muscles are found in the
a) Haemocoel
b) Heart of the cockroach
c) Arm
d) Heart of mammals

57) The joint between the lower jaw and skull is a
a) Gliding joint
b) Hinge joint
c) Pivot joint
d) Saddle joint

58) During muscle contraction
a) Chemical energy is changed into electric energy
b) Chemical energy is changed into mechanical energy
c) Chemical energy is changed into physical energy
d) Mechanical energy is changed into chemical energy

59) Mainly the skeletal muscles are named on the basis of
a) Their location, size and number
b) The direction of the fibres
c) Their origin, insertion and action
d) All of the above

60) The sliding theory of muscle contraction was given by
a) R.E. Davies
b) H.F. Huxley and A.F. Huxley
c) H.E. Huxley
d) A.F. Huxley

61) Smooth muscles are present in the
a) Ciliary body
b) Stomach
c) Iris
d) All of the above

62) Which muscle extends the shank?
a) Biceps
b) Ilio-fibularis
c) Sartorius
d) Triceps femoris

63) When the head of the humerus fits into the glenoid cavity, the joint is a
a) Ball and socket joint
b) Hinge joint
c) Pivot joint
d) Saddle joint

64) A sprain is due to the excessive pulling of a
a) Ligaments
b) Muscle
c) Nerve
d) Tendon

65) Which of the following forms the muscle?
a) Neurofibril
b) Neurilemma
c) Myofibril
d) Sarcolemma

66) Latissimus dorsi muscles are the
a) Muscles of the fore arm
b) Muscles of the lower jaw
c) Muscles of the chest
d) Muscles of the shoulder

67) The lateral rotation of the thigh is facilitated by
a) Gluteus medius
b) Gluteus minimus
c) Iliacus
d) Obturator externus

68) Muscle contraction occurs due to
a) Myosin
b) Actin
c) Both
d) None

69) Which function as a booster of muscle contraction in the cardiac muscle?
a) Cross-bridges
b) Intercalary discs
c) Myosin
d) Sarcomeres

70) Which of the following movements in man are directly concerned with locomotion?
a) Bending of the arm at the elbow
b) Rotation of the head of the femur in the acetabulum
c) Peristaltic movements
d) Contraction of the heart

71) The myofibrils of muscles consist of
a) Actin and tropomyosin
b) Actin and myosin
c) Fibrous actin
d) Light and heavy meromyosin

72) Gastrocnemius muscles is attached to the
a) Thigh
b) Shank
c) Chest
d) Fore arm

73) An example of unstriated muscles which are entirely involuntary are those that are located
a) In the diaphragm
b) In the eyelids
c) At the pylorus
d) At the base of the external ears

74) Cardiac muscle is supplied with
a) Non-myelinated fibres
b) Myelinated fibres
c) Both myelinated and non-myelinated fibres
d) None of the above

75) The contraction and relaxation periods of a muscle constitute the
a) Muscle beat
b) Muscle stimulus
c) Muscle twitch
d) Muscle conduction

76) Electron microscopic studies of the sarcomere have revealed that during muscle contraction
a) The width of A-band remains constant
b) The width of the H-zone becomes smaller
c) The width of I-band increases
d) The diameter of the fibre increases

77) Where would you find intercalated discs?
a) In cardiac muscles
b) In striated muscles
c) In non-striated muscles
d) None of the above

78) Which joint is responsible for turning your head from side to side?
a) Imperfect joint
b) Hinge joint
c) Fixed joint
d) Pivot joint

79) What is the main source of energy during muscular contraction?
a) ATP
b) Blood
c) Glycogen
d) Plasma

80) Muscle fatigue is due to
a) Increase in ATP
b) Decrease in ATP
c) Rest period
d) Decrease in stimulation

81) The immovable joints in mammals are found in
a) The neck zone
b) The skull
c) The pelvic girdle
d) The lower jaw

82) Which of the following is an example of hinge joint?
a) Humerus and radio-ulnar joint
b) Femur and acetabulum
c) Humerus and acetabulum
d) Glenoid and humerus

83) In birds which flight muscle is well developed?
a) Alary
b) Bicep
c) Gastrocnemius
d) Pectoralis major

84) A synovial capsule is found in the
a) Brain of frog
b) Brain of rabbit
c) Thoracic cavity of mammals
d) Ball and socket joint

85) The biceps muscle connects the humerus with the
a) Radius
b) Ulna
c) Scapula
d) Pectoral girdle

86) During fatigue the
a) Blood circulation in the muscle stops
b) The muscles fail to relax
c) The muscles fail to be stimulated
d) The motor nerve does not respond to the muscles

87) The triceps muscle joins the ulna with the
a) Radius
b) Humerus
c) Phalanges
d) Scapula

88) For the contraction of a muscle, it needs
a) Proteins
b) Stimulation
c)
d) All of the above

89) Which muscle flexes the fore limb?
a) Biceps brachii
b) Latissimus dorsi
c) Dorsal scapularis
d) Triceps brachii

90) In which form do the actin and myosin proteins occur in skeletal muscle?
a) Fibres
b) Micromolecules
c) Disassembled
d) Thick and thin filaments

91) Doubly refractive bands are those of
a) A-bands
b) I-bands
c) J-bands
d) Both A- and I-bands

92) On the lateral surface of humerus a muscle is attached, called the
a) Biceps brachii
b) Deltoid
c) Teres major
d) Teres minor

93) The flexion of the thigh and knee and their inward rotation is facilitated by the
a) Biceps muscle
b) Triceps muscle
c) Sartorius muscle
d) Shank

94) The mitochondria present in muscle fibres are known as
a) Sarcosomes
b) Sarcoplasmic reticulum
c) Sarcoplasm
d) None of the above

95) In muscle fibres the endoplasmic reticulum is
a) Sarcoplasmic reticulum
b) Absent
c) Irregular in shape
d) Seen only during protein synthesis

96) The time period between the beginning of electrical response and the peak of tension recorded is
a) Contraction time
b) Latent period
c) Refractory period
d) Relaxation time

97) The major protein in the thick filament of a skeletal muscle fibre is
a) Tropomyosin
b) Myosin
c) Actin
d) Troponin

98) The largest number of mitochondria are present in
a) Cardiac muscle
b) Thigh muscle
c) Breast muscle of bird
d) Shin muscle

99) Voluntary muscular co-ordination is under the control of the
a) Cerebrum
b) Cerebral hemisphere
c) Cerebellum
d) Medulla oblongata

100) Autorhythmicity is a special property of the muscles of the
a) Liver
b) Intestine
c) Heart
d) Kidney

Answers

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