In anatomical position, the palm of the hand 'faces' A. anteriorly. The ventral cavity is composed of all of the following body cavities except the A. thoracic cavity. B. abdominal cavity. C. spinal cavity. D. pelvic cavity.
Pericardial membranes surround the A. lungs.
The layers or aggregates of similar cells that perform specific functions are A. organelles. A. lysosome B. Golgi apparatus C. ribosome D. vacuole E. mitochondrion 19. The function of melanin in the skin is to A. prevent infections. B. protect against ultraviolet light. C. help regulate body temperature.