It is the tongue.
Their lungs and diaphragm
The outer part of a frog is comprised of the skin, which protect the frog and helps keep it moist.
The external part of the frog, such as its skin, is responsible for respiration, protection against pathogens, and regulation of body temperature. Additionally, the skin of a frog helps in absorbing water and nutrients.
The anus.
frog legs
Thorax
Circulatory system
The digestive system.
The dorsal aorta of a frog is the main blood vessel that carries oxygenated blood from the heart to the rest of the body. It runs along the dorsal side of the frog's body, supplying blood to the organs and tissues. It is part of the circulatory system that helps distribute nutrients and oxygen throughout the frog's body.
the thorax
Its exoskeleton.
the tympanum