Mediastrium between the lungs
A flea does not have a heart. They have 9 parts, just not a heart. head, eyes, mouth parts, legs, claws, thorax, antenna, abdomen, genitalia.
The thymus gland is in the upper thorax anterior to the heart.
Yes. The thorax is a body division. In humans the thorax lies between the neck and the abdomen. It houses the heart and lungs.
a shrimp's heart is in the thorax, which is right under the head, but normal people would consider the thorax part of the head.
heart and lungs
Heart and lungs
Abdomen.
The heart of a cricket is located in the thorax between the lungs.
Heart sounds are created by the relationship between the valves of the heart and the surface of the thorax.
Thymus
A shrimps heart is located on its head. If we base it on the exact anatomy of a shrimp, its heart is located on its thorax just after the head, but both the head and the thorax are covered with a single exoskeleton only, that is why the shrimps thorax can be mistaken as still part of the shrimps head. But in general, we see a shrimp divided only into 2 parts, the head and the tail, we see no thorax in it.
The bony thorax protects the heart and liver. Wrong... the bone thorax protects the heart and LUNGS as it also allows the respiratory muscle to create a vacuum that will draw air into the lungs. while the Ribs withing in the bone thorax will protect not only the thoracic organs, but as well the spleen, most of the liver and to some extent the kidneys.