In anatomical position, the ulna lies:
(a) Medial to the radius
(b) Lateral to the radius
(c) Inferior to the radius
(d) Superior to the radius

검증된 단계별 안내

Step 1: Understand the anatomical position, which is the standard reference position in anatomy where the body stands upright, facing forward, with arms at the sides and palms facing forward.

Step 2: Recall the bones of the forearm: the radius and the ulna. Both run parallel from the elbow to the wrist.

Step 3: Identify the relative positions of the radius and ulna in the anatomical position. The radius is located on the lateral (thumb) side of the forearm.

Step 4: Determine the position of the ulna relative to the radius. Since the ulna is on the side closer to the body’s midline (the pinky side), it is medial to the radius.

Step 5: Conclude that in anatomical position, the ulna lies medial to the radius, which corresponds to option (a).

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Anatomical Position

The anatomical position is a standard reference posture where the body stands upright, facing forward, arms at the sides with palms facing forward. This position is used to describe locations and relationships of body parts consistently.

Medial and Lateral Directions

Medial refers to a position closer to the midline of the body, while lateral means farther from the midline. These terms help describe the relative positions of structures, such as bones in the forearm.

Forearm Bones: Ulna and Radius

The forearm contains two long bones: the ulna and the radius. In anatomical position, the ulna is located on the medial side (toward the body’s midline), and the radius is on the lateral side (away from the midline).

In anatomical position, the ulna lies:(a) Medial to the radius(b) Lateral to the radius(c) Inferior to the radius(d) Superior to the radius