Which of the following is incorrectly matched?

A. Cardiovascular anatomy: This refers to the structure of the heart and blood vessels, including their size, shape, and location, but does not describe their function.

B. Systemic physiology: Systemic physiology studies the functions of organ systems throughout the body in general, not specifically the heart and blood vessels.

C. Systemic anatomy: Systemic anatomy focuses on the structural organization of entire organ systems, without addressing how they function.

D. Cardiovascular physiology: Cardiovascular physiology examines how the heart and blood vessels work together to circulate blood, deliver oxygen and nutrients, and maintain blood pressure.

A. A long fatty acid chains: Triglycerides with long fatty acid chains can be either saturated or unsaturated. The chain length affects melting point to some extent but does not solely determine whether the fat is a solid or liquid at room temperature.

B. Saturated fatty acids: Saturated triglycerides have no double bonds, making their fatty acid chains tightly packed. This structure leads to higher melting points, so they are generally solid at room temperature, as seen in butter or lard.

C. Unsaturated fatty acids: Unsaturated triglycerides contain one or more double bonds in their fatty acid chains, which introduce kinks that prevent tight packing. This structure lowers their melting point, making them liquid at room temperature and therefore classified as oils.

D. A high water content: Triglycerides are hydrophobic molecules that do not mix with water. Their classification as oils or fats depends on the degree of saturation of fatty acids, not water content, since triglycerides themselves contain virtually no water.