What levels of organization are higher than the cell level?

Answer 1

The Levels of Organization is a term used in basic biology-3, anatomy, and physiology. It is used with five basic concepts, the smallest the cell. Many specialized cells make up a tissue, many tissues an organ, many organs an organ system, and finally, many organ systems an organism. In bizarre cases microorganism(microorganism) and superorganism, only one cell or many organisms may occur within a single species.

Level I: CellsCells are the basic building blocks of life, and performs vital functions in an organism.

• peroxisome
• ventricle-2

Other less common or varying structures are listed in theMain article: organelle

Level II: TissuesMain article: tissue-biology

A tissue is a collection of specialized cells that perform a specific function. The four types of tissues are muscle, nervous-tissue-1, epithelium-1, and connective-tissue. When all these tissue join together they form an organ

Level III: OrgansMain article: organ

An organ is a group of tissues that perform a specific function or groups of functions. Animal organs include the brain, the lungs, the liver, and the stomach and some plant organs are leafs, roots, and the stem. Your senses are also organs- your ears, tongue, eyes, nose, and skin are sense. Organs inside an animals body are often called internal organs or more scientifically viscera (pl. viscus). Plant organs are split into both vegetative (root, stem, etc.) and reproductive organs (flower, seed, etc.). A list of human organs is provided below in alphabetical order:

• Arteries
• Bronchi
• Ears
• Heart
• Lungs
• Muscles
• Skin
• Tongue

Level IV: Organ SystemsMain article: biological-systemMain article: biological-system

An organ system is a collection of organs that perform a specific function- the circulatory system or digestive system for example. Several organ systems are present in humans and other creatures have different kinds of systems. Plants have circulatory-systemand sharkhave a kind of "electromagnetismsystem". An organ system cannot live by itself and is dependent on other organ systems to form an organism. Here is a list of human organ systems and the organs they are made up of:

• circulatory-system: the heart, blood, and blood vessels
• digestion: the salivary glands, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus
• endocrine-system: the hypothalamus, pituitary gland, pineal body, thyroid, parathyroids, and adrenals
• integumentary-system: the skin, hair, and nails
• lymphatic-system: the leukocytes, tonsils, adenoids, thymus, and spleen
• muscular-system: the muscles
• nervous-system: the nerves, brain, spinal cord, and peripheral nerves
• reproductive-system: the ovaries, fallopian tubes, uterus, vagina, mammary glands, testes, vas deferens, seminal vesicles, prostate, and penis
• respiratory-system: the pharynx, larynx, trachea, bronchi, lungs, and diaphragm
• skeleton-1: the bones, cartilage, ligaments, and tendons
• urinary-system: the kidneys, ureters, bladder, and urethra

Organ systems may be closely intertwined and called things like the human-musculoskeletal-systemor neuroendocrinology.

Level V: OrganismsMain article: organism

An organism is made up of cells and are either unicellular or multicellular. The fifth level of organization is referring to multicellular organisms. Organism is also the largest level of organization known- it is highly likely that superorganism will be accepted as the sixth level of organization. An organism is a type of living thing that is made of cells and is close enough- genetically- to be considered a species. Millions of organisms are currently known, from parameciumto ourselves. All generally known or excepted organisms fit into six monarchyor regnum: Animalia (stuffed-animal), Plantae (plant), Protista (protist), Fungi (fungus), archaeon(or Archaebacteria), and bacteria. virusand virus-classificationare not generally considered organisms. Scientists are currently looking into the creation of artificial-lifeand cybornetics and may end up looking towards the levels of organization for guidance and research.