Final answer:
The term 'posterior' refers to the back or the direction toward the back of the body, which is the opposite of 'anterior,' indicating the front or the direction toward the front of the body.
Step-by-step explanation:
A. situated behind; anterior.
Posterior means being situated at the back, or in the direction toward the back of the body. It relates to what is behind a structure or closer to the back compared to another structure. The term is interchangeable with dorsal, especially in non-human anatomy. Within the human body, the posterior aspect is the opposite of anterior, which describes the front or the direction toward the front of the body. For instance, the shoulder blades are positioned posteriorly to the ribcage, while the chest is considered anterior to the spine.
Posterior means situated behind or towards the back of the body. It is the opposite of anterior, which means situated in front or towards the front of the body.
For example, the brain is located in the posterior cavity of the body, also known as the dorsal cavity. The heart, on the other hand, is located in the anterior cavity of the body, also known as the ventral cavity.