Heart beats originates from
pace maker
cardiac muscles
left atrium
right ventricle
A.
pace maker
Cardiac impulse (heart beat) normally originate from the pace-maker (SA node).
Posterior pituitary gland
produces and store hormones
stores 6 trophic honnones
stores and releases ADH and oxytocin
release and store growth and thyroid stimulating hormone
The instrument used for measuring blood pressure is
electrocardiograph
X-rays
sphygmomanometer
electroencephalograph
Earthworms are economically important for man as these are used as
bait for catching fish
food of poultry
medicine for gout
All of the above