Multiple Choice QuestionsDamage to thymus in a child may lead to
a reduction in haemoglobin content of blood
a reduction in stem cell production
loss of antibody mediated immunity
loss of cell mediated immunity
D.
loss of cell mediated immunity
Thymus gland is located in the upper part of thorax near the heart. It is a bilobed, pinkish gland. It secretes thymosin hormone, thymic humoral factor and thymopoietin.
Proliferation of lymphocytes and differentiation of these lymphocytes into a variety of clones are induced by these factors. These clones are differentially specialized to destroy different specific category of antigens and pathogens. Therefore, thymus gland brings fourth T- lymphocytes for cell mediated immunity.
Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter
acetylcholine
norepinephrine
dopamine
GABA
Moulting hormone is secreted by
corpora cardiacum
prothoracic gland
corpora allata
neurosecretory hormone
Blood calcium level can be increased by the administration of
glucagon
thyroxine
parathormone
caleitonin
Gonadotropin releasing hormone is transferred to anterior pituitary by
left coronary artery
hypophysial portal veins
axons of neurosecretory cells
nuclei of hypothalamus
When kidney of a person is damaged, he/she invariably suffers from anaemia because
RBCs pass through the glomerulus
sufficient erythropoietin is not produced
haemoglobin is not synthesised sufficiently
iron and vitamin B12 are not able to bind to haemoglobin
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