__ 1. Which organ systems are responsible for regulating body temperature and blood sugar levels? A. Integumentary and Endocrine B. Endocrine and Skeletal C. Nervous and Muscular D. Respiratory and Circulatory

## Step 1<br />The question asks us to identify the that are responsible for regulating body temperature and blood sugar levels. <br /><br />## Step 2<br />The integumentary system, which includes the skin, sweat glands, and blood vessels, plays a crucial role in regulating body temperature. The skin helps to control body temperature by adjusting the flow of blood to the skin and through the process of sweating.<br /><br />## Step 3<br />The endocrine system, which includes glands such as the pancreas, regulates blood sugar levels. The pancreas produces insulin, a hormone that helps to lower blood sugar levels, and glucagon, a hormone that helps to raise blood sugar levels.<br /><br />## Step 4<br />The other options, such as the skeletal system, nervous system, muscular system, respiratory system, and circulatory system, do not play a direct role in regulating body temperature and blood sugar levels.