Respiratory System
The human respiratory system is divided into two parts i.e., the upper respiratory system and the lower respiratory system.
- Main organs: Nose, pharynx, larynx, trachea, bronchi, lungs, and diaphragm.
- The nasal cavity and pharynx together forms upper respiratory system, and the remaining organs form the lower respiratory system.
- The respiratory system is also known as the ventilatory system, gas exchange system, or respiratory apparatus. Vertebrates like human beings possess lungs for respiration. The process of respiration starts with the cycle of inhalation and exhalation.
- Functions: Facilitates the exchange of oxygen and carbon dioxide between the body and the environment, supporting cellular respiration and providing oxygen to tissues.
Human Body
Human body is a single structure composed of billions of tiny components, which can be classified into four main groups: cells, tissues, organs, and systems. At the microscopic level, the cell is the most basic and fundamental unit that forms the foundation of the entire human body.
The human body is a highly organized system that performs various functions like movements, reproduction, growth, differentiation, respiration, digestion, and excretion. All these processes work together, in a balance, for the well-being of the individual and to sustain life.
Table of Content
- Human Body
- Human Anatomy
- Skeletal System
- Muscular System
- Human Physiology
- Respiratory System
- Nervous System
- Circulatory System (Cardiovascular System)
- Digestive System
- Human Reproductive System
- Urinary System
- Endocrine System
- Key Points on Human Body
- FAQs on Human Body