Blood Organ

Organ (biology)

In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a function. Tissues of different types combine to form an organ which has a specific function. The intestinal wall, for example, is formed by epithelial tissue and smooth muscle tissue. Two or more organs working together in the execution of a specific body function form an organ system, also called a biological system or body system.

Blood

Blood is a specialized form of connective tissue and body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells of the body, and transports metabolic waste products away from those same cells.

blood

Noun

1. A vital liquid flowing in the bodies of many types of animals that usually conveys nutrients and oxygen. In vertebrates, it is colored red by hemoglobin, is conveyed by arteries and veins, is pumped by the heart and is usually generated in bone marrow.
2. A family relationship due to birth, such as that between siblings; contrasted with relationships due to marriage or adoption. See blood relative, blood relation.

Verb

1. To cause something to be covered with blood; to bloody.
2. To let blood (from); to bleed.

organ

Noun

1. The larger part of an organism, composed of tissues that perform similar functions.
2. A body of an organization dedicated to the performing of certain functions.

Verb

1. To supply with an organ or organs; to fit with organs.