Definition of organ
(Entry 1 of 2) 1a : a differentiated structure (such as a heart, kidney, leaf, or stem) consisting of cells and tissues and performing some specific function in an organism.
What does organ system mean science?
An organ system is a group of organs that work together to perform one or more functions. Each organ has a specific function in the body and is made up of certain tissues.
What are types of organs?
Types of Organs
- Integumentary (skin, hair, nails)
- Skeletal (bones)
- Muscular (smooth, cardiac, and skeletal muscles)
- Circulatory (heart, arteries, veins)
- Respiratory (lungs, diaphragm, larynx)
- Digestive (stomach, intestines, liver)
- Urinary (kidneys, ureters, bladder)
- Immune (lymph nodes, bone marrow, thymus)
What are examples of organs?
Definition. In biology, an organ (from the Latin “organum” meaning an instrument or tool) is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Your heart, kidneys, and lungs are examples of organs.
What does an organ means? – Related Questions
What is organ and organ system?
An organ is a group of tissues that work together for the overall function of the organ, and an organ system is a group of organs that work together to perform a specific function.
What is an organ system give two examples?
A group of closely related organs that work together for a specific purpose for a particular organism is called an organ system. (a) The digestive system and respiratory system are examples of organ systems in animals. (b) The root system and the shoot system are the two main organ systems in plants.
What makes up an organ system?
Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
What is an organ system name one?
The 11 organ systems include the respiratory system, digestive and excretory system, circulatory system, urinary system, integumentary system, skeletal system, muscular system, endocrine system, lymphatic system, nervous system, and reproductive systems. There are other systems in the body that are not organ systems.
Is blood a organ?
This chapter reveals that blood, which constitutes approximately 8% of human body weight, is one of the largest organs and the main means of transport for the exchange of substances between the organs. Blood plays an important role in the defense and repair processes of the body.
How many organs are in the body?
They perform vital life-supporting functions, like pumping blood or eliminating toxins. Many resources state that there are 79 known organs in the human body. Together, these structures keep us alive and make us who we are.
What is the largest organ in the body?
The skin is the body’s largest organ.
What is the smallest organ?
- The smallest organ is the pineal gland.
- It is situated centrally in the brain.
- It is the main site for the secretion of melatonin that controls the internal clock of the body.
Which organ has the most blood?
In terms of which organ has the most blood pumped into it however, the liver gets the greatest share of the body’s circulating blood by comparison with all other organs.
What is the weakest organ in the body?
The appendix may be the most commonly known useless organ.
Many years ago, the appendix may have helped people digest plants that were rich in cellulose, Gizmodo reported. While plant-eating vertebrates still rely on their appendix to help process plants, the organ is not part of the human digestive system.
What is the coolest organ?
Your Liver: Your Coolest Organ.
What organs can u live without?
You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs.
What is the most useful organ?
Anatomy & Function
The brain is arguably the most important organ in the human body. It controls and coordinates actions and reactions, allows us to think and feel, and enables us to have memories and feelings—all the things that make us human.
What is the toughest organ in the body?
Your teeth contain the hardest substance in the human body — your enamel. Bones aren’t quite as hard as enamel, but they rank closely on the hardness scale.
What are the 2 most important organ?
While your heart is a vital organ, the brain (and the nervous system that attaches to the brain) make up the most critical organ system in the human body.
Is your skin an organ?
The skin is the largest organ of the body. The skin and its derivatives (hair, nails, sweat and oil glands) make up the integumentary system.
Is hair an organ?
Your integumentary system is an organ that consists of a few main structures: skin, nails, hair and glands, along with the nerves and blood vessels that support them.