The concentric tissue layers of the heart wall and the surrounding pericardial and pleural structures.

The four anatomical lobes, key dividing sulci, and the olfactory bulb of the human brain in lateral view.

The nine principal veins responsible for returning deoxygenated blood to the heart.

The key reproductive stages of a gymnosperm pine tree from cone formation to a young seedling.

Major bones and key features of the internal cranial base in superior view.

The primary structural components and organelles of a standard animal cell.

The nine principal arteries supplying oxygenated blood from the heart throughout the human body.

The primary layers and anatomical structures of human skin in cross section.

The muscles that help promote and supinate the hand

The major stabilising ligaments and intervertebral discs of the human vertebral column in sagittal section.