The spiracles (tiny holes in the sides of the animal) and the trachea (small tubes attached to them).
your lungs
The intestine.
The intestine.
The lung or pulmonary system is the essential respiration organ that makes it possible for oxygen to enter the circulatory system.The alveoli struture makes it possible for oxygen to enter the circulatory system.
Circulatory system
placenta
The female reproductive organ of an insect is called the ovipositor. This specialized structure allows female insects to lay eggs in various environments, often enabling them to select suitable locations for their offspring. The ovipositor can vary significantly in shape and size among different insect species, adapted for specific reproductive strategies.
The lungs are the saclike organ in amphibians that take in oxygen from the air. Oxygen is then transferred from the lungs to the bloodstream through a process called respiration. This allows the amphibian to breathe and obtain the necessary oxygen for metabolic processes.
Goldfish come to the top of the water to breathe air because they have a special organ called a labyrinth organ that allows them to take in oxygen from the surface.
The lungs. Oxygen enters our lungs as part of the air that we breathe. It goes to the blood vessels deep in our lungs and then on to all parts of our body.
The respiratory system and the circulatory system. The respiratory system has the lungs bringing in air to your body. Then that oxygen you get is transported around your body via the circulatory system.
The placenta is the organ that allows nutrients to pass between the mother and embryo. It is connected to the uterus wall and facilitates the exchange of oxygen, nutrients, and waste products between the mother's bloodstream and the developing fetus.