Capillaries are made up of very thin and flat tissues that are spread across the body. Substances are able to diffuse through the capillaries because of the presence of blood. Particularly, the red blood cells that make-up blood within the body. These cells have the ability to carry oxygen, carbon dioxide, glucose, and water to pass through the capillaries.
Answer:
A. Mostly unstaurated fatty acids
Explanation:
Fats can be both mostly saturated and unsaturated, though oils typically fall under the description of mostly unsaturated.
Capillaries have thin walls, only one cell thick, that allow them to effectively perform their function.
