Secretin is secreted by________?

A child with stunted growth with a stuffed – belly, and short stature with mental retardation is suffering from the deficiency of which of the following________?

Skeletal muscles________?

The approximate amount of air left in the lungs after maximal forced expiration in a normal woman________?

Contractile element in myofibril is________?

Histamine is present on surface of________?