Killer Whale (Orca)
A killer whale ( Orcinus orca ) is a marine mammal of the family Delphinidae (oceanic dolphin). Also known as orca , it is a highly predatory black-…
A killer whale ( Orcinus orca ) is a marine mammal of the family Delphinidae (oceanic dolphin). Also known as orca , it is a highly predatory black-…
The coronary circulation is the circulatory system of the heart which allows the blood supply to the cardiac muscle and endocardium. The oxygen-rich…
Kwashiorkor is a severe case of malnutrition in children, in which there is extreme protein deficiency. It occurs in infants after weaning, when the…
Myoglobin is a globular, iron-containing protein that stores molecular oxygen in muscles and delivers it to the oxidative cell systems. Structurally…
Hemoglobin is the oxygen-carrying molecule of the red blood cells of vertebrates. This protein represents more than 95% of the solid constituents of…
The pyramidal tract is a pathway of cortical efferent fibers composed of billions of myelinated axons which arise from pyramidal neurons (Betz cells…
The circulatory system is the complex network of blood vessels and lymphatic ducts concerned with the transport of blood and lymph throughout the bo…