Veins receive blood from the capillaries after gas exchange takes place.
____ are the smallest, most fragile blood vessels
Capillaries are the smallest, most fragile blood vessels. They are involved in the exchange of gases, nutrients, and waste products between the blood and the tissues.
Tiny air sacs where exchange of gasses occur are
The tiny air sacs where the exchange of gases occurs are called alveoli. They are found at the very end of the respiratory tree in the lungs and are crucial for the process of oxygen entering the bloodstream and carbon dioxide being expelled from the body.
Give simple answer
Alveoli.
____ is a balloon-type, bulging of a blood vessel
Aneurysm.
____ refers to the pressure in the arteries when the heart is at rest, between bears.
