Download Body Systems Review Sheet 2013

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Body Systems Quiz Review Sheet
Homeostasis
1. What is homeostasis?
2. How do negative feedback loops and positive feedback loops maintain homeostasis? Provide examples
using: oxygen and carbon dioxide levels in the blood, regulating glucose in the blood, regulating body
temperature, when you damage a blood vessel and clotting occurs, when you have an infection and
white blood cells respond.
3. In the pulse and breathing rate lab activity: explain how your body responds and why it responds (in
terms of oxygen and carbon dioxide and glucose levels) to the following activities: exercise, holding
your breath, hyperventilating, and breathing into a paper bag.
4. Explain why a physically fit person typically has a lower resting heart rate and their heart rate quickly
returns to rest after exercising?
5. How does smoking negatively affect the respiratory and circulatory system?
Nutrients and Digestion
1. What are the main functions (in our body) of the following nutrients: carbohydrates, proteins, lipids,
vitamins and minerals?
2. What is the purpose of our digestive system?
3. Identify the main role related to digestion each of these organs play: mouth, stomach, liver, pancreas,
small intestine, large intestine.
4. Bile is not an enzyme. Where is it produced? Where is it secreted (released)? What role does it play in
digestion?
Respiratory System and Circulatory System
1. What is the function of the respiratory and circulatory systems?
2. What are the components of blood (organize by percentage) and what are the purposes of each
component?
3. How does your brain control involuntary breathing?
4. What are the purposes of each type of blood vessel (arteries, capillaries, veins) and how does their
anatomy allow them to perform these functions?