(N/A) $\rightarrow$ The system for control and coordination is highly evolved in the frog. It includes both the neural system and endocrine glands.
$\rightarrow$ The neural system is composed of the central nervous system (brain and spinal cord),peripheral nervous system (cranial and spinal nerves),and autonomic nervous system (sympathetic and parasympathetic).
$\rightarrow$ The chemical coordination of various organs of the body is achieved by hormones,which are secreted by endocrine glands. The prominent endocrine glands found in the frog are the pituitary,thyroid,parathyroid,thymus,pineal body,pancreatic islets,adrenal,and gonads.