What is the name for the bone that forms the upper arm and connects the shoulder to the elbow?

Correct Answer: D

Rationale: The humerus spans the upper arm, linking shoulder to elbow, supporting movement. Unlike leg or forearm bones, it's the arm's structural anchor. Clinicians focus here for fractures, ensuring its integrity restores arm function.

Correct Answer: D

Rationale: Anatomy studies both the structure of body parts and their relationships, distinguishing it from physiology, which focuses on function. Option D (A and B only) is correct as it encompasses both aspects. For example, anatomy examines the femur's shape and its articulation with the pelvis, not how it moves (physiology). This dual focus helps understand bodily organization, crucial for medical fields like surgery, where structural knowledge guides intervention.

Correct Answer: B

Rationale: The correct order is atom (smallest), molecule, organelle, cell, tissue, organ, organ system, organism (most complex). B aligns with this, starting with atoms forming molecules (e.g., water), then organelles (e.g., ribosomes), cells, tissues (e.g., muscle), organs (e.g., heart), systems (e.g., circulatory), and organisms (e.g., human). Other options misplace levels, disrupting anatomy's logical progression.

Correct Answer: C

Rationale: The nose is medial (closer to midline) to the ears, which are lateral (sides of head). It's not lateral, anterior (B, though forward of ears), or both. Medial reflects anatomy's midline reference, accurately positioning the nose centrally on the face.

Correct Answer: B

Rationale: The pinky is lateral (farther from midline) to the thumb, which is more medial on the hand. It's not distal (A, farther from attachment), medial, or proximal (D, closer to attachment). Lateral fits anatomy's hand orientation in anatomical position.