My notes are a collection of summaries describing different living systems within the human body. It explores the intricacies of the respiratory system, detailing the processes of breathing and cellular respiration. Additionally, it delves into the anatomy of the heart, outlining its structure and ...
Organs and organ systems
Breathing-
● it is a process of taking in Oxygen and explain carbon dioxide
● It is a physical process
● By taking in oxygen gaseous exchange between the cell and the external
environment occurs
● It was to stages ventilation and gas exchange
● Ventilation is the movement of air in and out of the body
● Gas exchange is the absorption of Oxygen and believes of carbon dioxide from the
lungs
● It is a voluntary action
● It is also called external respiration
Respiration-
● it is a process a body breaks down the food so that the cells can use it
● It is a chemical process
● Uselessing that oxygen in the cell to provide energy
● Takes place in cellular level
● It is a process in which energy is produced and CO2 and H2O is eliminated from the
cell
● It is a non voluntary action
● It is also called internal respiration
There are three steps in the Respiratory system:
* Exchange of gases
* The transportation of gases i.e. O2 and CO2
* The cellular respiration where glucose gets converted into energy.
Exchange of gases:
If the volume of the system increases the pressure will decrease to maintain equilibrium and
vice versa.When the volume of the lungs ↑ the pressure is known as intrapulmonary
pressure. This pressure is below the environmental pressure and the air rushes in through
the respiratory path.
Volume of the lungs ↓ - Intrapulmonary pressure ↑ - Air rushes out of the lungs
The Respiratory system is located in the thoracic cavity. Here the rib cage is present. Within
the rib cage there is a domed shaped partition called diaphragm. Within the rib cage there
are pleural membranes enclosing a fluid-filled space surrounding the lungs.
The right lung is divided into three parts namely the right superior, right middle and right
inferior.The left lung is smaller to accommodate the heart.
Both the lungs are connected with small tubular bronchi which unites into the trachea. The
trachea has C-shaped rings of cartilage on its surface.
The trachea leads to the pharynx, which is connected to the nostrils. The air molecules enter
the nostrils going down to the pharynx and trachea, then air is departed into both the lungs
through the bronchi. These bronchi further divide repeatedly to form bronchioles in a network
of alveoli.
Each alveoli is surrounded in a network of capillaries. As the alveolar capillaries carry blood,
the oxygen from the lungs is absorbed by the RBCs present in the blood. They have
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller sayali28. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
