Anterior intercostal arteries 2
Share your inquiries now with community members
Click Here
Sign up Now
Lessons List | 100
Lesson
Show More
Lessons
Comments
Our New Certified Courses Will Reach You in Our Telegram Channel
Join Our Telegram Channels to Get Best Free Courses
Join Now
We Appreciate Your Feedback
7 Reviews
Vasco Sar
HEMANT KUMAR MAURYA
Lydia
DIPESH KUMAR SINGH 2014843
Show More Reviews
Related Courses in Medical
Course Description
The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary history. In land animals the respiratory surface is internalized as linings of the lungs. Gas exchange in the lungs occurs in millions of small air sacs; in mammals and reptiles these are called alveoli, and in birds they are known as atria. These microscopic air sacs have a very rich blood supply, thus bringing the air into close contact with the blood. These air sacs communicate with the external environment via a system of airways, or hollow tubes, of which the largest is the trachea, which branches in the middle of the chest into the two main bronchi. These enter the lungs where they branch into progressively narrower secondary and tertiary bronchi that branch into numerous smaller tubes, the bronchioles. In birds the bronchioles are termed parabronchi. It is the bronchioles, or parabronchi that generally open into the microscopic alveoli in mammals and atria in birds. Air has to be pumped from the environment into the alveoli or atria by the process of breathing which involves the muscles of respiration.
In most fish, and a number of other aquatic animals (both vertebrates and invertebrates) the respiratory system consists of gills, which are either partially or completely external organs, bathed in the watery environment. This water flows over the gills by a variety of active or passive means. Gas exchange takes place in the gills which consist of thin or very flat filaments and lammelae which expose a very large surface area of highly vascularized tissue to the water.
Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange. Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals. The respiratory system in plants includes anatomical features such as stomata, that are found in various parts of the plant.
Trends
MS Excel
Learning English Speaking
C Programming Errors and Testing
ChatGPT high level
Mobile Apps from Scratch
Python programming language
English greetings and responses
Wireless Communication systems
Big Data Analytics skills for beginners
English Language
Computer related Laws
Apprendre Python
Investment analysis techniques for beginners
Machine Learning in Python
Python introduction
crack software
Video editing with adobe premiere
Communication Skills
Firebase Database
Magento Formation Français
Recent
Wireless Communication systems
C Programming Errors and Testing
Computer related Laws
Networking tools and techniques
CompTIA network certification exam Prep
Network troubleshooting Fundamentals
PGT computer science exam Pattern
NIELIT CCC exam Preparation
Number system in digital electronics
Lexical analysis in compiler design with exam
Software types for beginners
Basic computer organisation
Typecasting in python with execution
Hadoop Framework for beginners
Microprocessor and Microcontroller
Data warehouse fundamentals with examples
ML and Data Science
Basic formula of factorial and Permutations
Artificial intelligence questions basics
Algebra Of matrices basics