When the normal heart of a man is injected with physiological concentration of adrenaline it shows
Systolic arrest
Decreased rate
Sustained increased rate
First increased then normal rate
Secretion of aldosterone in birds, man and other mammals is stimulated by
If a human female starts developing male characteristics like beared, degeneration of uterus and ovaries, enlargement of clitoris etc. It may be due to
Young boys at puberty start growing facial hairs. This is an example of
Angiotensin is derived from plasma protein "angiotensinogen'' by the action of renin and other nervous stimuli. Angiotensin stimulates the following
Feeling the tremors of an earthquake a scared resident of seventh floor of a multistoryed building starts climbing down the stairs rapidly. Which hormone initiated this action?