Two of these organ systems bear the major responsibility for ensuring homeostasis of the internal environment. Which two? a. nervous system, b. digestive system, c. cardiovascular system, d. endocrine system, e. reproductive system.

Video transcript

Hi, everyone. Let's look at our next question. The respiratory system is responsible for a promoting growth and development. B, the exchange of gasses between the body and the environment. D excreting salt and urea or D supporting and protecting the internal organs. So when we think about the respiratory system, hopefully it's pretty easy to pick choice B the exchange of gasses between the body and the environment, maintaining normal cellular function by the intake I 02 and the release of CO two. So let's just look briefly at our other answer. Choices, choice, a promoting growth and development. That would be the endocrine system. So that's not what we're looking for. So I see excreting salt and urea would be the urinary and integumentary systems. So not our answer. And then finally, choice D supporting and protecting the internal organs would be the skeletal system so we can eliminate that. So once again, the respiratory system responsible for choice B the exchange of gasses between the body and the environment. See you in the next video.