IQ2 ANATOMY OF THE DOMESTIC FOWL 



face of the gland. The blood-vessels are not well developed in the 

 interior of the gland but are numerous and of good size in the outer 

 parts. Lymph vessels are also present. 



Function. The adrenals are ductless glands. They secrete an 

 internal secretion, or hormone, which influences the tonus of the 

 blood-vessels. An extract from these glands is called adrenalin. 



