Final answer:
The correct answer is Option 1: A, as it correctly identifies both articulations that make up the elbow joint: between the trochlea of the humerus and the trochlear notch of the ulna, and between the capitulum of the humerus and the head of the radius.
Step-by-step explanation:
The elbow joint is a complex structure that includes the articulations between the trochlea of the humerus and the trochlear notch of the ulna, as well as the capitulum of the humerus and the head of the radius. Analyzing the provided options, the most comprehensive option that covers the proper articulations would be Option 1: A. The elbow joint comprises trochlea-ulna and capitulum-radius articulations, as it correctly identifies that the trochlea of the humerus articulates with the trochlear notch of the ulna, and the capitulum of the humerus articulates with the head of the radius.
The elbow joint is composed of the articulations between the trochlea of the humerus and the trochlear notch of the ulna, as well as the capitulum of the humerus and the head of the radius. In other words, the trochlea of the humerus connects with the trochlear notch of the ulna, and the capitulum of the humerus connects with the head of the radius.