Animal Physiology MCQs Part 18

1) Nails, claws, horns and hoofs are derivatives of
a) Bones
b) Connective tissue
c) Epidermis
d) Cartilage

2) Simple coiled tubular glands are found in the
a) Dermis of the skin
b) Kidney
c) Liver
d) Spleen

3) The layer of actively dividing cells in the skin of a frog is termed as
a) Stratum compactum
b) Stratum Spongiosum
c) Stratum malpighi
d) Stratum corneum

4) The term ” Blubber ” refers to
a) A substitute for natural rubber
b) A subcutaneous deposition of fat in whales
c) The irregular heart-beat sounds
d) None of these

5) Coiled tubular glands are found in the
a) Gut
b) Fundus of the stomach
c) Sweat glands of the skin
d) Pancreas

6) Pterygoid is the name of a
a) Cartilage
b) Cartilage bone
c) Membranous bone
d) Long bone

7) The fibrous tissue which connects bones is the
a) Connective tissue
b) Tendon
c) Adipose tissue
d) Ligament

8) The vertebro-arterial canal is found in the
a) Cervical vertebrae
b) Thoracic vertebrae
c) Lumbar vertebrae
d) Sacral vertebrae

9) The teeth found in a rabbit are
a) Monophyodont
b) Thecodont
c) Homophyodont
d) Chromodont

10) The axis vertebra of a mammal differs from its atlas vertebra in
a) The absence of a centrum
b) The presence of a neutral arch
c) The presence of a central canal
d) The presence of an odontoid process

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

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

13) At times the ligaments are over stretched or torn. This is called a
a) Dislocation
b) Fracture
c) Sprain
d) Tension

14) Which of the following functions as boosters of muscle contraction in cardiac muscle ?
a) Cross-bridges
b) Intercalary discs
c) Myosin
d) Sarcomeres

15) The major protein in the thick filaments of a skeletal muscle fibre is
a) Tropomysin
b) Myosin
c) Actin
d) Tropnin

16) A large number of mitochondria are present in
a) Cardiac muscle
b) Thigh muscle
c) the breast muscles of birds
d) Thin muscle

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

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

19) The sarcolemma is a membrane found over the
a) Nerve fibre
b) Cardiac muscle
c) Skeletal muscle fibre
d) Heart

20) The ensheathing of a muscle is called the
a) Fascia
b) Peritoneum
c) Ligament
d) Tendon

21) What will happen if the eyes of a frog are covered by paper ?
a) Frog will not move
b) Frog will soon die
c) Frog will move to one side only
d) Frog will not do anything

22) The perception of sound in a mammal is by stimulation of the mechanoreceptors located in the
a) Reissner’s membrane
b) Sacculus
c) Semicircular canal
d) Organ of Corti

23) The internal ear is filled with
a) Endolymph
b) Aqueous humour
c) Perilymph
d) Vitreous humour

24) The columella auris is a modified
a) Articular bone
b) Sphenoid bone
c) Hyomandibular bone
d) Quadrate bone

25) The retina is most sensitive at the
a) Optic disc
b) Fovea centralis
c) Macula lutea
d) Periphery

26) In the frog the ‘fenestra ovalis’ is the
a) The opening in the auditory capsule which separates the middle ear from the internal ear
b) The air filled cavity of the middle ear
c) The communication between the pharynx and the tymphanic cavity
d) The external opening of the tympanic cavity which is covered by the tympanic membrane

27) Secretin stimulates the
a) Pancreas
b) Gall bladder
c) Lungs
d) Gastric glands

28) The substance called ADH is
a) A hormone that promotes glycogenesis in liver cells
b) An enzyme secreted by cells of the intestinal wall ; hydrolyses dipeptides into amino acids
c) A high energy compound involved in muscle contraction
d) A pituitary hormone promoting water reabsorption

29) Parathormone induces
a) an increase in the serum calcium level
b) a decrease in the serum potassium level
c) an increase in the blood sugar level
d) a decrease in the blood sugar level

30) Which endocrine gland stores its secretion in the extracellular space before discharging it into the blood ?
a) Pancreas
b) Testis
c) Thyroid
d) Adrenal

31) According to the ” Immunity theory” of ageing the process starts with the gradual atrophy and disappearance of the
a) Thyroid
b) Thymus
c) Parathyroid
d) Islets of Langerhans

32) The hormones thyroxine, adrenaline and the pigment melanin are formed from
a) Tryptophan
b) Glycine
c) Tyrosine
d) Proline

33) Parthenogenesis is the phenomenon in which
a) Artificial fertilization occurs
b) an egg is fertilized by a sperm
c) an egg undergoes cleavage without fertilization
d) a sperm dies before fertilization

34) Testicular degeneration and other disorders of the reproductive system in mammals are due to the deficiency of
a) Vitamin A
b) Vitamin B
c) Vitamin K
d) Vitamin E

35) If the number of chromosomes in most body cells of a mammal is 40, the cells in the seminiferous tubule will have
a) 40 chromosomes
b) 20 chromosomes
c) 10 chromosomes
d) none of the above

36) A fully formed sperm cell in a frog has
a) A nucleus, and an acrosome,
b) A nucleus, an acrosome, a pair of centrioles
c) A pair of flagella
d) A nucleus, an acrosome, a pair of centrioles and a tail

37) Estrous cycle is characteristic of
a) Human females
b) Mammalian females other then primates
c) Mammals
d) Mammalian females

38) Which disease is caused by a nematode ?
a) Leprosy
b) Poliomyelitis
c) Amoebiasis
d) Filariasis

39) If a muscle fails to react to stimulation and there is much production of lactic acid the condition is termed as
a) Paralysis
b) Tonus
c) Fatigue
d) Tetanus

40) Mumps is a viral disease caused due to inflammation of the
a) Submaxillary gland
b) Parotid gland
c) Sublingual gland
d) Infraorbital gland

41) Schuffner’s dots are related to
a) R.B.C. of man
b) Leucocytes of frog
c) Epithelium of stomach of mosquito
d) Entamoeba histolytica

42) Tuberculosis is caused by
a) Salmonella
b) Diplococcous
c) Mycobacterium
d) Streptococcus

43) Dengue fever is caused by
a) Bacteria
b) Plasmodium
c) A virus
d) Entamoeba histolytica

44) Antibodies are produced by
a) Lymphocytes
b) Monocytes
c) Spindle cells
d) Leucocytes

45) Antibodies against germs in our body are formed in
a) Liver by the Kupffer cells
b) Thymus by the lymphocytes
c) Blood by the plasma cells
d) Blood by the platelets

46) Antiserum contains
a) Antigens
b) Antibodies
c) RBCs
d) WBCs

47) A hormone produced against an allergic reaction is
a) Glucocorticoid
b) Mineralocorticoid
c) Epinephrine
d) Norepinephrine

48) Cornea transplantation is outstandingly successful because
a) The technique involved is very simple
b) the cornea is very easy to preserve
c) the cornea is not linked up with blood vascular and immune system
d) the cornea is easily available

49) Which of the following bacteria commonly live in the human intestine?
a) Escherichia coli
b) Corynebacterium
c) vibrio cholerae
d) Bacillus anthracis

50) Which of the following is a bacterial disease?
a) Measles
b) Small-pox
c) Rabies
d) Tuberculosis

51) The conversion of cortexolone to prednisolone involves
a) Hydroxylation
b) Dehydrogenation
c) Hydroxylation, dehydrogenation
d) Dehydrogenation, hydroxylation

52) Which of the following isotopes is most dangerous to Homo sapiens?
a) Cesium-137
b) Iodine-131
c) Phosphorus-32
d) Strontium-90

53) Chemically an antibody is a
a) Protein
b) Lipid
c) Lipoprotein
d) Nucleoprotein

54) Hormones may be
a) Steriods
b) Peptides
c) Amino acid derivatives
d) All the above

55) The complete failure of the anterior lobe of the pituitary causes
a) Addison’s desease
b) Acromegaly
c) Cushing’s disease
d) Simmond’s disease

56) Which of the following diseases results from an endocrine disorder?
a) Pneumonia
b) Goitre
c) Typhoid
d) Jaundice

57) The hormone testosterone in the testes is secreted by
a) Tunica albuginea
b) Sertoli cells
c) Leydig/interstitial cells
d) Primary spermatocytes

58) Progesterone is
a) An enzyme for digesting proteins
b) Hormone to initiate uterine contraction
c) Amino acid which may be cause of alkaptonuria
d) Hormone concerned with retention and growth of pregnancy

59) Endocrine glands are those glands which pour their secretion directly into
a) Ducts
b) Substrate
c) Blood
d) All the above

60) The term “Hormone” was coined by
a) E.H. Starling
b) G.W. Harris
c) E.H. Schally
d) W.M. Bayliss

61) The hormone secreting structure produced after ovulation is
a) Corpus albicans
b) Corpus spongiosum
c) Corpus callosum
d) Corpus luteum

62) The secretion of estrogen is under the control of
a) FSH
b) Progesterone
c) LH
d) STH

63) Vasopressin is connected with
a) Dilution of urine
b) Concentration of urine
c) Slow heart beat
d) Quicker heart beat

64) ADH or vasopressin is a/an
a) Enzyme that hydrolyses peptides
b) Hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate
c) Hormone that promotes glycogenolysis
d) Energy rich compound connected with muscle contraction

65) The deficiency of pituitary hormone causes a disease
a) Diabetes insipidus
b) Diabetes mellitus
c) Goitre
d) Acromegaly

66) Goitre is caused by
a) A lack of iodine
b) A sore throat
c) Continuous cough and cold
d) Repeated fever

67) The addition of a trace of thyroxine or iodine to water containing tadpoles will
a) Keep them in the larval stage
b) Hasten their metamorphosis
c) Slow down their metamorphosis
d) Kill the tadpoles

68) Diabetes insipidus is caused by hyposecretion of
a) Insulin
b) Vasopressin
c) Oxytocin
d) Thymosin

69) The urine of an expectant mother contains
a) Progesterone
b) FSH
c) Luteinising hormone
d) Chorionic gonadotropin

70) Diabetes mellitus means the
a) Increase of sugar in blood
b) Inccrease of sugar in urine
c) Decrease of sugar in blood
d) Both A and B

71) The release of milk from the mother’s breast is mediated through
a) Prolactin
b) Relaxin
c) Oxytocin
d) Progesterone

72) The action of insulin was first demonstrated by
a) Banting and Best
b) Darwin
c) Lamarck
d) Watson and Crick

73) Thick skin, long arms and legs are due to hypersecretion of hormone from
a) Thyroid
b) Thymus
c) Anterior pituitary
d) Posterior pituitary

74) The hormones involved in carbohydrate metabolism are
a) Insulin, glucagon, epinephrine and parathormone
b) Insulin, glucagon, epinephrine and glucacorticoids
c) Insulin, glucagon, glucocorticoid and calcitonin
d) Insulin, glucagon, norepinephrine and melatonin

75) The removal or absence of the thymus in early life will bring about a
a) Lack of lymphocytes
b) Lack of antibodies
c) Lack of lymph nodes
d) All the above

76) The hormone controlling Na+ – K+ ion cocentration is
a) Aldosterone
b) Anti-diuretic hormone
c) Progresterone
d) Pitocin

77) If a receptor molecule is removed from a target organ for hormone action, the target organ will
a) Continue to respond but require higher concentration of hormone
b) Continue to respond but in the opposite way
c) Continue to respond without any difference
d) Not respond to thehormone

78) Oversecretion of growth hormone in adults produces
a) Gigantism
b) Acromegaly
c) Grave’s disease
d) Gull’s disease

79) The anti-ageing hormone is
a) Thyroxine
b) Melatonin
c) Estrogen
d) Testosterone

80) Cretinism is caused by
a) Hypoparathyroidism
b) Hypothyroidism
c) Hyperparathyroidism
d) Hyperthyroidism

81) Autoimmune thyroiditis results in
a) Simmond’s disease
b) Minimata disease
c) Grave’s disease
d) Hashimoto disease

82) The pancreas secretes the following hormones:
a) Vasopressin and oxytocin
b) Insulin and glucagon
c) FSH and LH
d) Epinephrine and norepinephrine

83) Which is not produced by the human placenta?
a) Human chorionic gonadotropin
b) Estrogen
c) Prolactin
d) Progesterone

84) Thyroxine is
a) Another name for the follicles of the thyroid gland
b) Stored in follicle cells of the thyroid
c) Active form of thyronine
d) Stored in the pituitary gland

85) Which are incorrectly paired?
a) Myxoedema – Swollen facial tissue
b) Cretinism – Mentally retarded
c) (Insulin – Raised blood glucose
d) (D Parathyroid – Tetany

86) The stress/emergency hormone is
a) Oxytocin
b) Vasopressin
c) Adrenaline
d) Sex hormone

87) Match the columns:
I II
a Adenohypophysis p Epinephrine
b Adrenal medulla q Somatotropin
c Parathyoid gland r Thymosine
d Thymus gland s Calcitomin

a) a – q, b – p, c – s, d – r
b) a – s, b – r, c – q, d – p
c) a – r, b – p, c – s, d – q
d) a – p, b – q, c – r, d – s

88) The element present in thyroxine is obtained from
a) Laminaria
b) Polysiphonia
c) Porphyra
d) Gelidium

89) The total length of the blood vessels in human body is
a) 9. 6 km
b) 96.5 km
c) 9600 km
d) 96000 km

90) For one complete circuit in the body, a blood cell takes
a) 60 seconds
b) 6 minutes
c) 60 minutes
d) 6 hours

91) The spleen stores
a) RBCs
b) Lymphocytes
c) Iron
d) All the above

92) The amount of blood which can be stored in the spleen is
a) 200 ml
b) 100 ml
c) 50 ml
d) None of the above

93) The foetal passage between the aortic and pulmonary arches is
a) Foramen rotundum
b) Foramen caecum
c) Ductus arteriosus
d) Ligamentum arteriosum

94) The tonsils and adenoids are
a) Lymph nodes
b) Connective tissue with blood supply
c) Endocrine glands
d) Small organs specialised to produce endorphins

95) Lymphokines are
a) Chemical messengers from lymphocytes
b) Antibodies
c) Antigens
d) Meshes of lymph node

96) A lymphokine involved in the defensive reaction against viruses is
a) Interleukin
b) Endorphin
c) Interferon
d) Both B and C

97) Macrophages are
a) Short lived
b) Longer lived than most leucocytes
c) Lymphocytes
d) A type of neutrophils

98) In the lungs macrophages help in the removal of
a) Microorganisms
b) Dust and fibres
c) Cell debris
d) All the above

99) Properdin is
a) Neurohormone for stimulating body activities
b) Plasma protein that destroys foreign RBCs
c) Plasma protein involved in defence against certain bacteria and viruses
d) Both B and C

100) Erythropoietin is released by
a) Bone marrow
b) Spleen
c) Kidneys
d) Liver

Answers

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