×
Blog Create CV Courses Certificates Online Courses Communities

Login

Sign up
MindLuster Logo
Categories
Popular

Join Our Telegram Channel Now to Get Any New Free Courses : Click Here

Typical intercostal nerves 3

Share your inquiries now with community members Click Here
Previous Lesson Next Lesson
Sign Up and Get Free Certificate
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

Excellent
4 Reviews
Good
3 Reviews
medium
0 Reviews
Acceptable
0 Reviews
Not Good
0 Reviews
4.6
7 Reviews
Vasco Sar

very easy to understand 2023-12-30

HEMANT KUMAR MAURYA

Great tution 2023-11-08

Lydia

The lessons are not thought in English so I'm not able to understand anything said by the instructor. <br /> It will be good to have the lessons in various languages to help learners 2023-10-27

DIPESH KUMAR SINGH 2014843

Excellent 2023-09-08

Show More Reviews


Related Courses in Medical
Infection Control
19 Lessons

Infection Control

Male Reproductive
47 Lessons

Male Reproductive

Anatomy
38 Lessons

Anatomy

Pharynx
40 Lessons

Pharynx

Endocrine
27 Lessons

Endocrine

General Embryology
37 Lessons

General Embryology

General Embryology 2
52 Lessons

General Embryology 2

Hand
5 Lessons

Hand

Muscular System
21 Lessons

Muscular System

Digestive
38 Lessons

Digestive

Thigh
27 Lessons

Thigh

Forearm
54 Lessons

Forearm

Arm
58 Lessons

Arm

Shoulder
32 Lessons

Shoulder

Back sensory nerve supply
14 Lessons

Back sensory nerve supply

Axilla
28 Lessons

Axilla

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
Recent
Previous Lesson Next Lesson