51. The thyroid gland is homologous to which part of lower chordates

A Neural gland
B Pharyngeal gill pouch
C Nerve cord
D Endostyle
Answer :   Endostyle
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52. Basal nuclei situated in

A Thalamus
B Hypothalamus
C Wall of cerebral hemisphere
D Independently situated
Answer :   Wall of cerebral hemisphere
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53. Respiratory control in brain occurs in

A Medulla
B Cerebellum
C Hypothalamus
D Pericardium
Answer :   Medulla
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54. None Myelinated axons differ from myelinated in that they

A Are more excitable
B Lack nodes of Ranvier
C Are not capable of regeneration
D Are not associated with Schwann cells
Answer :   Lack nodes of Ranvier
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55. If receptor molecule is removed from 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 opposite way
C Continue to respond without any difference
D Not respond to hormone
Answer :   Not respond to hormone
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56. Hormone secreted by pituitary gland is chemically

A All protein
B All steroid
C Complex compounds of proteins and carbohydrates
D Some steroid and some protein
Answer :   All protein
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57. Hypothyroidism causes in adult

A Obesity
B Diabetes
C Cretinism
D Myxoedema
Answer :   Myxoedema
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58. Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

A Insulin
B Adrenaline
C Glucagon
D ACTH
Answer :   Adrenaline
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59. Which one of the following is not a second messenger in hormone action ?

A Calcium
B Sodium
C cAMP
D cGMP
Answer :   Sodium
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60. Norepinephrine leads to increase in

A Blood pressure
B Urine production
C Cellular respirqation
D Release of epinephrine
Answer :   Blood pressure
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