Anatomy

... body systems: Integumentary system Muscular system Nervous system Reproductive system Respiratory system Excretory system circulatory system Lymphatic system Skeletal system ( Human skeleton ) Endocrine system Digestive system Immune system Organs : ...

Biology

... is an important part of physiology and considers how organ systems in animals such as the nervous , immune , endocrine , respiratory and circulatory systems function and interact. The study of these systems is shared with the medically oriented disciplines of neurology , immunology and the ...

Blood

... arteries . It diffuses its oxygen by passing through tiny blood vessels called capillaries . It then returns to the heart through the veins . See circulatory system for a more detailed description of this circulation. Blood also transports metabolic waste products, drugs and other foreign chemicals to ...

Brain

... organs elsewhere in a body and brains react to hormones produced elsewhere in the body. In mammals, most of these hormones are released into the circulatory system by a structure called the pituitary gland . It is hypothesized that developed brains derive consciousness from interaction among ...

Diffusion

... also Active transport Barotropic vorticity equation Bipolar junction transistor Brownian motion Cell membrane circulatory system Diffusion equation Effusion Electrochemical potential Emulsion polymerization Fick's law of diffusion ...

Drosophila

... of the phylum Arthropoda , a phylum of segmented animals with paired, jointed appendages and a hard exoskeleton made of chitin . They have an open circulatory system with a dorsal heart, hemocoel occupies most of the body cavity, and coelom is reduced. The insect respires by means of air-filled ...

Lung

... to the lungs (from an older edition of Gray's Anatomy ) The lung is an organ belonging to the respiratory system and interfacing to the circulatory system of air-breathing vertebrates . Its function is to exchange oxygen from air with carbon dioxide from blood . The process in which this ...

Memory B cell

... Memory B cells are B cells that although activated by the immune system, they are stored inside the circulatory system for later use, for long periods of time, possibly a whole lifetime. Like other cells such as helper T cells , killer T cells , and plasma ...

Thermoregulation

... but only the endotherms (birds and mammals) can maintain a stable body temperature by using their nervous , endocrine , respiratory and circulatory systems . The heat of the body is generated by the chemical changesthose of oxidationundergone not by any particular substance or in any one place, ...