Which systems are encompassed by the integumentary and sensory organ systems?

The integumentary and sensory organ systems play crucial roles in maintaining the body's homeostasis and protecting its internal structures. The integumentary system includes the skin, hair, nails, and associated glands, while the sensory organs encompass structures that allow the body to perceive stimuli, such as the eyes, ears, and skin.

The correct answer reflects the primary functions of these systems: encasing the body provides a protective barrier against external threats such as pathogens and environmental hazards. Furthermore, skin plays a key role in regulating body temperature through mechanisms like sweat production and vasodilation or constriction of blood vessels. This regulation is essential for maintaining optimal physiological functioning despite varying external conditions.

The other options relate to functions performed by different systems in the body. While supporting body structures does contribute to overall stability, it primarily pertains to the skeletal and muscular systems. The circulation of nutrients and gases is the main responsibility of the cardiovascular system, whereas the processing of food for absorption is primarily handled by the digestive system. Understanding these distinctions helps clarify the specific roles of the integumentary and sensory organ systems in bodily function.