23. Biting Flies can transmit diseases and cause loss of blood for animals. In nature. Horses have developed behaviors to repel biting flies such as ear twitching, head tossing, leg stomping, and tail swishing.Which statement best describes the interaction between body systems that allows horses to repel biting flies? a. The nervous system senses the biting flies and sends a signal to the muscular system to move b. The circulatory system senses the biting flies and sends a signal to the nervous system to move. c. The muscular system senses the biting flies and sends a signal to the integumentary system to move. d. The Integumentary system senses the biting flies and sends a signal to the circulatory system to move.

## Step 1<br />The problem is about the interaction between body systems in horses that allows them to repel biting flies. The options provided are:<br />a. The nervous system senses the biting flies and sends a signal to the muscular system to move.<br />b. The circulatory system senses the biting flies and sends a signal to the nervous system to move.<br />c. The muscular system senses the biting flies and sends a signal to the integumentary system to move.<br />d. The Integumentary system senses the biting flies and sends a signal to the circulatory system to move.<br /><br />## Step 2<br />The nervous system is responsible for sensing stimuli and sending signals to other body systems. In this case, the nervous system senses the biting flies.<br /><br />## Step 3<br />The muscular system is responsible for movement. In this case, the nervous system sends a signal to the muscular system to move.<br /><br />## Step 4<br />The other options (b, c, and d) are incorrect because the circulatory system, muscular system, and integumentary system do not sense stimuli or send signals to other body systems.