621. The cranial and spinal nerves are included under

A Autonomic nervous system
B Peripheral nervous system
C Central nervous system
D Cutaneous nervous system
Answer :   Peripheral nervous system
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622. Heart is innervated by

A Vagus
B Trigeminal
C Facial
D Glossopharyngeal
Answer :   Vagus
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623. Acetylcholinesterase enzme splitas acetylcholine into

A Acetone and choline
B Acetic acid and choline
C Amino acid and choline
D Aspartic acid and acetylcholine
Answer :   Acetic acid and choline
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624. Role of thymus in homosepiens is chiefly concerned with

A Reproduction
B Immunology
C Calcium balance
D Bloodcoagulation
Answer :   Immunology
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625. First discovered hormone

A Thyroxine
B Adrenaline
C Secretin
D Insulin
Answer :   Secretin
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626. The function of an axon is

A Transformation of nerve impulse
B Reception of stimuli from neurons
C Reception of external stimuli
D Conduction of nerve impulse
Answer :   Conduction of nerve impulse
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627. Nerve fiibres are surrounded by an insulating fatty layer called

A Adipose sheath
B Myelin sheath
C Hyaline sheath
D Peritoneum
Answer :   Myelin sheath
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628. Steroid hormone is derived from

A Corticoid
B Cholesterol
C AAD
D Protein
Answer :   Cholesterol
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629. Melanin protects us from

A U. V. rays
B visible rays
C infrared rays
D X-rays
Answer :   U. V. rays
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630. Which hormone stimulates contraction of gall bladder

A CCK-PZ
B ACTH
C LTH
D FSH
Answer :   CCK-PZ
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