What are the two major places in the body where gas exchange occurs?

What are the two major places in the body where gas exchange occurs?

Gas exchange occurs at two sites in the body: in the lungs, where oxygen is picked up and carbon dioxide is released at the respiratory membrane, and at the tissues, where oxygen is released and carbon dioxide is picked up.

What is one of the places air can enter the respiratory system?

Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx. The entrance to the larynx is covered by a small flap of tissue (epiglottis) that automatically closes during swallowing, thus preventing food or drink from entering the airways.

Where do gases exchange in the body occur?

alveoli
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

What two organ systems are involved in gas exchange?

Gas exchange between tissues and the blood is an essential function of the circulatory system. In humans, other mammals, and birds, blood absorbs oxygen and releases carbon dioxide in the lungs. Thus the circulatory and respiratory system, whose function is to obtain oxygen and discharge carbon dioxide, work in tandem.

Where does gas exchange take place in the body?

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

Where does the air enter the human body?

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi and bronchioles till the alveoli.

Where does the first air go in the respiratory system?

First air goes through your mouth or your nose. If air goes through your nose it filters the air and warms the air. If air goes through your mouth it doesnt do either of those, it actually comes in your mouth dirty. Then air enters the trachea.

Where does oxygen enter and leave the body?

The respiratory system enables oxygen to enter the body and carbon dioxide to leave the body. The respiratory system starts at the nose and mouth and continues through the airways and the lungs. Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx.

Where does air go after passing through the trachea?

Trachea: Air now enters the windpipe which is situated behind the sternum (breastbone) and between the two lungs. Bronchus: From the trachea, two bronchi (one bronchus for each lung) enter the lungs and divide and subdivide into secondary and tertiary bronchi, getting narrower as they proceed into the lung. Bronchioles: The…