How does blood move in an adult frogs circulatory system?

The circulatory system of an adult frog is a single, closed loop. The heart pumps blood through vessels called arteries to the lungs and body tissues. The blood then returns to the heart through vessels called veins.

The frog's heart has three chambers: two atria (singular, atrium) and one ventricle. The atria are the upper chambers of the heart, and the ventricle is the lower chamber. The right atrium receives blood from the body tissues, and the left atrium receives blood from the lungs. The ventricle pumps blood out to the body tissues and lungs.

The frog's circulatory system is similar to the circulatory system of other vertebrates, but there are some important differences. For example, frogs do not have a coronary artery, which is an artery that supplies blood to the heart muscle. Instead, the frog's heart muscle receives blood from the ventricle.

The frog's circulatory system is also adapted for the frog's lifestyle. Frogs are amphibians, which means that they can live both in water and on land. When a frog is in water, its skin absorbs oxygen from the water. When a frog is on land, its lungs absorb oxygen from the air. The frog's circulatory system helps to transport oxygen from the skin and lungs to the body tissues.

Here is a more detailed look at how blood moves in an adult frog's circulatory system:

1. The right atrium receives blood from the body tissues.

2. The right atrium contracts and pumps the blood into the ventricle.

3. The ventricle contracts and pumps the blood out to the lungs and body tissues.

4. The blood returns to the heart through the veins.

5. The left atrium receives blood from the lungs.

6. The left atrium contracts and pumps the blood into the ventricle.

7. The ventricle contracts and pumps the blood out to the body tissues.

This cycle repeats itself continuously, and it ensures that the frog's body tissues receive a constant supply of oxygen and nutrients.