The absorb the nutrient from your body and transport blood and oxygen.
Every cell (animal cells) get the food (Energy) they need by being contact with the bloodstream
All animals are organisms that are made of cells. Three examples of animals made with cells are mammals, fish, and birds.
Humans are animals. Humans are mammals and mammals are animals. Everyone should know that! Firstly, animals and humans both have the same cells. Mammals (like elephants) and humans both give birth to young. They can both stand on two legs or four.
Yes, for the most part anyway. Certain types of bacterium and viruses are single-celled but if you mean wellknown and familiar animals such as mammals, birds, fish, reptiles and amphibians then yes they have multiple cells
The circulatory system uses blood to bring oxygen from the lungs, and food from the digestive system. The circulatory system (heart, veins, arteries) takes care of that, branching into smaller and smaller vessels until all cells have some way of accessing them. The blood in those vessels carries food resources from the stomach and intestines, and oxygen from the lungs. It also brings the nutrients that cells need to build and grow, and carries away waste materials.
Virtually all eukaryotic (meaning all plants, animals, funghi, etc) cells have nuclei. The only exception of which I can think are erythrocytes (red blood cells) which lose their nuclei as they mature in mammals.
Neither, alveoli are the air sacs within the lungs in mammals (singular alveolus).
Most animal cells do not have fur, as fur is a feature of mammals that is specific to the skin. Animal cells are microscopic units that make up the tissues and organs of animals.
any animal any animal
A polar bear has animal cells. Animal cells are the basic building blocks of most animals, including mammals like polar bears. Plant cells have different structures and functions compared to animal cells.
Mammals are multicellular organisms, meaning they are made up of multiple cells working together to form tissues, organs, and organ systems. Each cell in a mammal has a specific function and is part of a larger organism made up of trillions of cells.
The number of blood cells in animals varies depending on the species and size of the animal. In general, mammals have billions to trillions of blood cells. Humans, for example, are estimated to have around 20-30 trillion red blood cells and about 2-3 trillion white blood cells in their bodies.