The vessels that carry blood away from the heart are called?.

hoice A rationale:

Peyer’s patches are lymphoid nodules located in the small intestine, not at the back of the throat.

Choice B rationale:

Lymph is a fluid that contains white blood cells and circulates throughout the lymphatic system, not a tissue located at the back of the throat.

Choice C rationale:

Tonsils are lymphoid tissues located at the back of the throat. They help protect the body from respiratory infections.

Choice D rationale:

The appendix is not located at the back of the throat. It is a narrow pouch that projects off the cecum in the digestive system.

The correct answer is Choice D.

Choice A rationale:

Vasoconstriction refers to the narrowing of blood vessels. When blood vessels constrict, they reduce the volume of blood that can flow through them, which increases the pressure. However, the flow is decreased, not increased.

Choice B rationale:

As explained above, vasoconstriction increases pressure but decreases flow.

Choice C rationale:

While vasoconstriction does increase pressure, it does not increase flow. Instead, it decreases flow.

Choice D rationale:

Vasoconstriction results in increased pressure and decreased flow. This happens because the narrowing of the blood vessels increases the resistance to blood flow, thereby increasing the pressure. At the same time, the reduced diameter of the blood vessels decreases the amount of blood that can flow through them.