Structures found within a cell that perform specific functions are:

Correct Answer: B

Rationale: Organelles are specialized structures within cells, like mitochondria producing energy, distinct from atoms (A, chemical units), organs (C, tissue groups), or tissues (D, cell groups). They're critical to cellular function, enabling anatomy to trace life processes from microscopic to macroscopic levels, making B the accurate choice.

Correct Answer: D

Rationale: Lateral means further from the midline (e.g., ears lateral to nose), not closer to attachment, farther from it, or midline. This term orients anatomy sideways, distinguishing side structures from central ones, making D correct.

Correct Answer: D

Rationale: Antebrachial refers to the forearm (elbow to wrist), not brachial (A, upper arm), antecubital (B, elbow front), or acromial (C, shoulder). Anatomical terminology precisely names regions, aiding in clinical accuracy like fracture descriptions.

Correct Answer: C

Rationale: Antebrachial denotes the forearm, not arm (A, brachial), chest, or leg. Repeated from QBA, it reinforces anatomical precision for the elbow-to-wrist region, confirming C.

Correct Answer: C

Rationale: The thoracic cavity contains pericardial (heart) and pleural (lungs) cavities, within the ventral cavity, but not dorsal. D overcomplicates; C is precise. Anatomically, thoracic defines the chest's subdivisions, key for understanding organ placement.