Biology 101; Muscle And Skeletal System Flashcards Exam Latest Version Questions And Accurate Answers

BIOLOGY 101; Muscle and Skeletal System Flashcards Exam latest version questions and accurate answers Q1 What main functions are served by muscle? Answers: 1. movement 2. support 3. thermoregulation 4. circulation 2 Q Briefly explain the role of the muscular system in thermoregulation. Answers: In cold conditions, skeletal muscles are involved in shivering, in which they contract and convert energy to heat. Smooth muscle also facilitates vasoconstriction and piloerection (goosebumps), both of which reduce heat loss.In warm conditions, smooth muscle facilitates vasodilation, which promotes the dissipation of body heat to the external environment. 3 Q Briefly explain the role of skeletal muscle in circulation. Answers: Skeletal muscles in the legs contract to compress nearby veins, assisting venous blood as it returns to the heart. Specifically, blood returning from the lower regions of the body must counteract gravity. Since venous pressure is relatively low, the function of skeletal muscle is vital. 4 Q Briefly explain the role of smooth muscle in circulation. Answers: Smooth muscle lines arteries, arterioles, and veins. In response to a variety of factors, this muscle can contract (promoting vasoconstriction) or relax (promoting vasodilation).Nervous system signaling and temperature changes, among other factors, are involved in promoting these responses.