#organ #organsystem #organism #biology #textbook #igcse
Pg:- 36,37,38,39
Ch:- 2
Organ:
a collection of tissues that structurally form a functional unit specialized to perform a particular function.
Heart: Composed of muscle, nerve, and connective tissues, the heart’s primary function is to pump blood throughout the body.
Liver: Involved in detoxifying chemicals and metabolizing drugs, and it also helps produce important proteins and manage energy stores.
Organs are made up of two or more types of tissues, such as muscle tissue, connective tissue, or epithelial tissue, each contributing to the organ's functionality.
Organ system:
An organ system is a biological system consisting of a group of organs that work together to perform one or more functions.
Circulatory System: Composed of the heart, blood vessels, and blood. It delivers oxygen and nutrients to cells and removes waste products.
Digestive System: Includes organs such as the stomach, intestines, liver, and pancreas, all working to break down food, absorb nutrients, and eliminate waste.
Nervous System: Consisting of the brain, spinal cord, and nerves, it coordinates bodily activities by transmitting signals to and from different parts of the body.
Each system works independently to carry out its function but also interacts with other systems to maintain the balance and functionality of the entire body.
Organism:
An organism is a living thing that can function on its own.
An organism is an individual living entity that can carry out all basic life processes. It is a complete, self-sustaining structure capable of growth, reproduction, response to stimuli, and maintaining homeostasis. An organism may consist of a single cell (unicellular, like bacteria) or many cells (multicellular, like humans).
In a multicellular organism, various organ systems interact to support the overall function and health of the body. Each system works in a coordinated way to allow the organism to respond to environmental changes, obtain energy, grow, and reproduce.
Can you explain the process of organ transplantation and its challenges?
How do different organ systems contribute to the overall functioning of an organism?
What are some examples of specialized organs in various organisms and their unique functions?
How does the failure of one organ system affect the entire organism?
What are the evolutionary advantages of having complex organ systems in multicellular organisms?
How do the nervous and endocrine systems interact to regulate bodily functions?