Which term describes a gel-like substance found in blood?

The term that describes a gel-like substance found in blood is "colloidal." In the context of blood, colloids refer to substances that consist of small particles suspended in a liquid, which in this case is plasma. Blood plasma, which is the liquid component of blood, contains proteins, electrolytes, hormones, and waste products, all of which give it a gel-like texture. This colloidal nature is crucial for maintaining blood volume and viscosity, as well as playing a role in the transport of various substances throughout the body.

Other options, such as "oral," "inguinal," and "patellar," do not relate to the composition of blood. "Oral" pertains to the mouth, "inguinal" refers to the groin area, and "patellar" relates to the kneecap. Thus, they do not describe any component or characteristic of blood, making colloidal the appropriate choice in this context.