Bio 210- Circulation

What are the main functions of the circulatory system?

The circulatory system transports nutrients, gases, hormones, and waste products throughout the body, regulating temperature and pH.

What is the difference between an open and closed circulatory system?

An open circulatory system has blood flowing freely within body cavities, while a closed circulatory system has blood enclosed within vessels.

What characterizes a two chambered heart?

A two chambered heart has one atrium and one ventricle; blood flows from the atrium to the ventricle and then to the gills or lungs for oxygenation.

What defines a three chambered heart?

A three chambered heart has two atria and one ventricle; it allows for some separation of oxygenated and deoxygenated blood.

What is the structure of a four chambered heart?

A four chambered heart comprises two atria and two ventricles, completely separating oxygenated and deoxygenated blood.

How does blood flow in a two chambered heart?

Blood flows from the body into the atrium, then to the ventricle, and out to the gills or lungs.

How does blood circulate in a three chambered heart?

Blood flows from the body into the right atrium, then to the ventricle, to the lungs for oxygenation, and back to the left atrium.

Describe the blood flow in a four chambered heart.

Blood from the body enters the right atrium, moves to the right ventricle, goes to the lungs, returns to the left atrium, and then to the left ventricle before being pumped to the body.

What are the advantages of double circulation?

Double circulation provides complete separation of oxygenated and deoxygenated blood, allowing for efficient oxygen delivery to tissues.

What is pulmonary circulation?

Pulmonary circulation is the movement of blood from the heart to the lungs for oxygenation and back to the heart.

What is systemic circulation?

Systemic circulation is the movement of oxygenated blood from the heart to the rest of the body and the return of deoxygenated blood back to the heart.

What are the types of blood vessels?

The types of blood vessels include arteries, veins, and capillaries, each with different functions and structures.

What distinguishes arteries from veins?

Arteries carry oxygenated blood away from the heart, while veins carry deoxygenated blood back to the heart.