Final answer:
The b. nervous and e. endocrine systems are the two primary organ systems that control and regulate the others. The autonomic nervous system manages involuntary functions, while the endocrine system uses hormones to influence cell activities, both essential for maintaining homeostasis.
Step-by-step explanation:
Organ Systems that Regulate Others
The organ systems that primarily control and regulate other organ systems in the human body are the b. nervous system and e. endocrine system.
The autonomic nervous system, a component of the nervous system, regulates involuntary body functions such as heart rate and digestion.
On the other hand, the endocrine system secretes hormones into the bloodstream, which travel to body cells and affect their activities.
Both systems are crucial in maintaining homeostasis, which is the stable, balanced state of the body's internal environment.
Specifically, the parasympathetic nervous system, a part of the autonomic nervous system, directly controls many aspects of the digestive system.
Moreover, the endocrine system and digestive system are interrelated, with several glands and cells producing hormones that regulate digestion and nutrient metabolism.