Recent questions tagged human-physiology

Regarding pineal gland - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Assertion (A) : Vasopressin is called as anti-diuretic hormone (ADH). Reason (R) : Vasopressin acts mainly at the kidney and stimulates resorption of water and electrolytes by the distal tubules and thereby reduces loss of water through urine. Regarding (A) and (R) :

asked Apr 3, 2014 by pady_1

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1. In males, LH stimulates the synthesis and secretion of hormones called androgens from testis. 2. In males, FSH and androgens regulate spermatogenesis. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding hormones of adenohypophysis - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding pituitary hormonal action in female - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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1. Over-secretion of GH in adults, stimulates abnormal growth of the body leading to gigantism 2. Low secretion of GH results in stunted growth resulting in pituitary dwarfism. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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1. Neurohypophysis stores and releases two hormones called oxytocin and vasopressin. 2. Oxytocin and vasopressin are synthesised by the hypothalamus and are transported via portal circulation to neurohypophysis. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding pituitary gland - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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1. Hypothalamic hormone called GHRH stimulates the pituitary synthesis and release of gonadotrophins. 2. Somatostatin from the hypothalamus inhibits the release of gonadotrophins from the pituitary. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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1. Several other non-endocrine tissues secrete hormones called growth factors. 2. Growth factors are essential for the normal growth of tissues and their repairing/regeneration Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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1. The juxtaglomerular cells of kidney produce a peptide hormone called erythropoietin 2. Erythropoietin stimulates formation of RBC. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding atrial natriuretic factor (ANF) - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding Progesterone - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding Estrogens - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding Androgens - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding Insulin - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding Islet of Langerhans - choose the insulin and glucagon option :

asked Apr 3, 2014 by pady_1

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Regarding Islet of Langerhans - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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1. Small amounts of androgenic steroids are also secreted by the adrenal cortex 2. These androgenic steroids play a role in the growth of axial hair, pubic hair and facial hair during puberty. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Glucocorticoids stimulate all except:

asked Apr 3, 2014 by pady_1

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In our body, 1. Cortisol is the main glucocorticoid. 2. Aldosterone is the main mineralocorticoid. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding the actions of adrenaline and noradrenaline - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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Regarding thymus gland - choose the correct statement :

asked Apr 3, 2014 by pady_1

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Regarding parathyroid hormone (PTH) - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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On the basis of their chemical nature, hormones can be divided into all of the following groups except:

asked Apr 3, 2014 by pady_1

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Regarding hormones and their receptor - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding mechanism of hearing - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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Regarding vestibular apparatus - choose the incorrect option :

asked Apr 3, 2014 by pady_1

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At the base of the cochlea, (i) the scala vestibuli ends at the oval window (ii)the scala tympani terminates at the round window which opens to the middle ear Regarding (i) and (ii) :

asked Apr 3, 2014 by pady_1

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Regarding visual perception - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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Regarding eye - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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1. The fovea is a thick portion of the retina where only the cones are densely packed. 2. It is the point where the visual acuity (resolution) is the greatest. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding midbrain, pons and medulla - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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1. The inner parts of cerebral hemispheres and a group of associated deep structures like amygdala, hippocampus, etc., form a complex structure called the limbic lobe or limbic system. 2. Along with the hypothalamus, limbic lobe is involved in the regulation of sexual behaviour, expression of emotional reactions (e.g., excitement, pleasure, rage and fear), and motivation Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding Hypothalamus - choose the incorrect one :

asked Apr 3, 2014 by pady_1

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The brain is covered by cranial meninges consisting of an outer layer called _____ , a very thin middle layer called _ and an inner layer (which is in contact with the brain tissue) called _________ .

asked Apr 3, 2014 by pady_1

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Regarding CENTRAL NEURAL SYSTEM all are true except :

asked Apr 3, 2014 by pady_1

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Regarding the electrical and chemical synapses - choose the incorrect one :

asked Apr 3, 2014 by pady_1

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A synapse is formed _______________________________________ a gap called synaptic cleft.

asked Apr 3, 2014 by pady_1

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When a stimulus is applied at a site on the polarised membrane - (choose the incorrect statement) :

asked Apr 3, 2014 by pady_1

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Regarding resting potential - choose the correct statement :

asked Apr 3, 2014 by pady_1

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The electrical potential difference across the resting plasma membrane called the resting potential is maintained by all except :

asked Apr 3, 2014 by pady_1

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Unmyelinated nerve fibres - 1. Unmyelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath around the axon. 2. It is commonly found in autonomous and the somatic neural systems. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding the myelinated nerve fibres - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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Each axonal branch terminates as a bulb-like structure called synaptic **** which possess synaptic vesicles containing chemicals called ; the axons ________________________________ .

asked Apr 3, 2014 by pady_1

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1. Short fibres which branch repeatedly and project out of the cell body also contain Nissl’s granules and are called dendrites. 2. These fibres transmit impulses away from the cell body. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding NEURAL SYSTEM - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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Coordination is the process through which

asked Apr 3, 2014 by pady_1

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About 20-25 per cent CO2 is carried by haemoglobin as -

asked Apr 3, 2014 by pady_1

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Regarding NEURAL REGULATION OF RESPIRATION - choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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