3. Since our heart is a cardiac muscle, it wouldn’t be able to pump blood without it’s muscular tissue walls. There are also other organs composed of muscular tissue that are crucial to survival such as intestines and even blood vessels rely on visceral muscle. 

4. Without smooth muscles involuntary movements like breathing or your heart beating couldn't happen. You diaphragm couldn't beat in time to sustain breathing, which makes the respiratory system near useless. If your heart couldn’t beat in time then the circulatory system becomes dangerous, and even if it could beat it in a reasonable time there wouldn’t be any oxygen. 

5. Fibers in our muscles rub against each other which generates heat; crucial to a healthy body (homeostasis). And homeostasis controls our body’s internal stability, stuff like water balance, the amount of hormones, salt concentration etc. And if one internal function is off the other functions will soon follow, which leads to a massive domino effect that leads to a body that looks like it’s in constant sickness, even when there's no illness that’s affecting it.

3  The nervous system is your body's communication system, it controls almost everything that your body does. It controls things from walking to walking to learning to breathing and how you react to emergencies. The nervous system is responsible for intelligence, learning, memory, movement, basic body functions, responding to an emergency, and the senses.

 
4  If the nervous system was destroyed then we would not be able to feel or do anything because your brain sends messages to all the parts of your body in different ways, that's why you feel all types of things. 

5  The autonomic nervous system regulates involuntary action, such as heartbeat and digestion.

2.If we did not have the reproductive we would not be able to have puberty because one part of puberty is some hormones like testosterone which is used for growth.
3. If you are missing this system you won’t be able to go through puberty. If you don’t go through puberty you will have a Impared sense of smell, be really short, have a high pitched voice, and will never grow.

4. The excretory system would be messed up because they would not have certain organs that they need for excretion

5. For a female if you have a irregular period there is a higher chance you won’t be able to ovulate and if your not able to ovulate then you won’t be able to get pregnant.

3.Other systems produce things needed for living, like oxygen and nutrients, but without the excretory system these would be contaminated and we could die. 

4. Our system should not be destroyed because if you didn’t have your excretory system you wouldn't be able to stay hydrated because you could not drink fluids. You need to be able to get rid of these fluids and if you don’t have your excretory system you wouldn't be able to. You have to drink fluids because if you don’t you will die. 

5. Once the blood is filtered through the kidneys, there are still important nutrients in your blood. The excretory system gets those nutrients back into the body. When you get sick you need nutrients to get better, and without them your body can't recover from illnesses and get stronger. 

2. The respiratory system could not absorb oxygen without the muscular system because the diaphragm which makes it so that we can breathe is a muscle and without it we couldn’t inhale or exhale.

3. The reproductive systems would not be able to work without the muscular system because conceiving a child and child birth both involve muscles.

4. Without your muscles you wouldn’t be able to walk, talk, or move in general which  would make it impossible to eat, drink, and do any necessary functions for life. 

5. The digestive system wouldn’t be able to break down and process food without muscles contracting and moving food from what organ to the next.

2 You cannot use basic functions without the skeletal system Such as them are walking jumping even sitting down 

3 Bones are designed to take a beating.

4  your brain can send messages without the skeletal system

5  By definition, mammals are vertebrates, which means that all mammals have an internal skeleton that supports the body. This structure is characteristically made up of over 200 bones and supports muscles and ligaments throughout the body.

3 A main organ the lungs works with the circulatory system so without the respiratory system you wouldn't have the circulatory system either 

4 All cells need oxygen to live and the respiratory system brings the cells the oxygen they need to live

5 Because it's include gas exchange and acid-base balance, and also defense and metabolism, and the handling of bioactive materials.

3.It takes out all the waste that you have in your body

4.It involves breakdowns to smaller componets

5.Absorbtion and nutrients and it gets rid of bacteria in the food that you eat

The cardiac muscle helps the heart make contractions and pumping action, if this muscle was not in the body the heart would not work properly. The heart is one of the most important organs in the body.

All of the organs in our body are made out of muscles, if there were no muscles there would be no organs.

Rectus Abdominis, the Rectus Abdominis muscle runs longitudinally along the ventral aspect of the body wall between the pectoral and pelvic girdles, and muscle is associated with the third group later on.  The Rectus Abdominis muscle helps us bend our back.

Gastrocnemius muscle, is a large posterior muscle of the calf of the leg. An action of the gastrocnemius pulls the heel up and extends the foot downward. The muscle provides the propelling force in running and jumping.  The Gastrocnemius muscle flexes our ankle joint, also flexes leg at the knee joint. We would be able to do any activity that has to do with bending or flexing the knees or ankle joints.

Reason 2. It also helps carry away wastes like for example Carbon Dioxide. Our body cells make these but too much is bad for us.

Reason 3. The heart is included in the circulatory system! Without having a heart to pump blood through our body we couldn’t even possibly live. And the heart is also crucial to other organs in other systems as well.

Reason 4. To stay alive a person needs healthy living cells. Without the circulatory system the oxygen-rich blood (with lots of nutrients essential for living) in our body would not properly circulate as it should.

Reason 5. The circulatory system can help you to fight diseases, keep the temperature of your body average, and give off the right amount of chemicals for the homeostasis. The homeostasis keeps all the systems balanced.

-Olivia, Emily, and Nicole ; )

3.The Nervous system is important because it controls heartbeat and breathing and without them two people would not be able to live neither could you stay.
4.If the nervous system was destroyed then we would not be able to feel or do anything because your brain sends messages to all the parts of your body in different ways, that's why you feel all types of feelings and more. 

5.The nervous system controls your reflexes 

2. If humans are going to survive, they need to have the reproductive system to not die and become extinct.
3.  the reproductive system produces hormones, which is something that helps regulate your body's natural processes 

4. If the reproductive system is gone, then part of the excretory system would be gone. If the reproductive system is gone it would affect the male’s urinary system because both systems share a common passageway.

5. Because the reproductive system causes menstruation which is vital for getting pregnant. Then babies would not be able grow somewhere for the first months of their life.

3.The excretory system helps the circulatory system by keeping blood pressure at a good level, if the excretory system did not exist the blood pressure level could go too high and become dangerous.
4. The skin is an excretory organ that rids the body of wastes through the sweat glands.
5.If the human did not have kidney in the body, humans would lose a specific hormone that is important to the body, ADH is a hormone that helps create urine, and control the amount of urine going out based on the amount of water.

4. If the respiratory system gets destroyed, then it would affect the digestive system because the pharynx both carries food and air.
5. The mouth is part of the respiratory system, and if the respiratory system is destroyed you wouldn’t have a mouth.

The musculoskeletal system is made up of the body's bones (the skeleton), muscles, cartilage, tendons, ligaments, joints, and other connective tissue that supports and binds tissues and organs together. Its primary functions include supporting the body, allowing motion, and protecting vital organs.

5.I believe we should not be destroyed because if you did not have bones you would be a blob. 

1. The nervous system is very important. It controls all that we do literally each and every one of our actions because it is linked with the brain and the spinal cord and nerves of the body. The brain is the control center and the spinal cord is the major highway to and from the brain.

2. Without your nervous system your body wouldn’t be able to function. For example your heart wouldn’t beat, because the nerves that spark your heart to move would not exist then your heart wouldn’t beat. Same thing with your stomach, your nerves tell your stomach to digest the food that is in it. Without your nervous system your body couldn’t move or feel pain, you wouldn’t be able to function. 
3. Without your nerves your body wouldn’t be able to evacuate waste. Which means your body would clog up and create infections. That can also lead to death, if you are not already dead from the loss of your nervous system. 
4. Without the nervous system your brain wouldn’t be able to tell the rest of your body what to do. Your brain would be almost useless, and we as humans would be basic rocks with thoughts .
5. Your nervous system is important because it sends messages through neurons controlling everything you do. Without your nervous system you could not walk or do any everyday activity. Without your nervous system you would basically be paralyzed.

And get no new nutrition, With out our system it would affect the digestive system because when we eat it we can't get rid of it.

reason 2:
Our system is also important because it has lungs which if wasn't there we wouldn't be able to take in air and get rid of carbon dioxide which is very important. Without the circulatory system, we wouldn’t have lungs and then we can’t breath. This would also affect the respiratory system.

reason 3: 
Another reason our system should be spared is because without our system all our cells wouldn't get all the nutrients, oxygen, minerals, and sugar they need to function correctly. They get these from our blood. If we take out our system our bodies we wouldn’t receive the stuff we need. 

reason 4:
Without our system there wouldn't even be a way for the rest of the body to get blood because there would be no blood vessels and blood vessels transport blood through the body. And the blood vessels like arteries, capillaries and veins are needed for the body to function correctly.

reason 5:
If you take away our system, you are also affecting other systems. Some of these systems include the respiratory system because since lungs are a part of the circulatory system and you need them to breath, getting rid of them will also cause failure in the system that is responsible for breathing. (respiratory system). The circulatory system is also responsible for the endocrine information, which is another system, the endocrine system. The endocrine system’s hormones and chemicals have to travel throughout the body with blood vessels. By taking our system away, the endocrine system will be affected as well.

2.The urethra is part of the reproductive system and its job is to carry pee to the outside of the body, so without the ability to pee, our bladders would explode and we would die.
3.Without the reproductive system we wouldn't be able to produce (testosterone, or estrogen) hormones that are necessary to survival and we would all DIE. 
4.Without the reproductive system, the female excretory system wouldn’t be able to work because you wouldn’t be able to release your fluids through the female urethra and your bladder would explode and the excretory system would fail. 
5. Without the reproductive system, the female digestive system wouldn’t work because if the reproductive system collapsed, then your excretory system would collapse which would lead to the digestive system collapsing because the waste from your food wouldn’t have anywhere to go. Therefore, the collapse of our system, would lead to the collapse of other systems and eventually the entire body and the human race would die.

3. The Circulatory system also takes out waste gases such as Carbon dioxide so that the body could breath it out.
4. The circulatory system isn’t AS dependent as the other systems. Although it needs some things from other systems, the circulatory system is able to maintain its own blood pressure and keep it at a healthy level (unless you eat a lot of certain types of food).
5.Every body system in the whole body depends on the circulatory system. Without the suppliance of oxygen and the taking out of Carbon dioxide that the circulatory system provides, no organs can function correctly. 

4. My forth reason is because it helps move your muscles around.

5.The bones also serve several vital functions like producing blood cells and storing/releasing fats and minerals. 

5.For my final reason of why we need to keep the reproductive system is, the system is made up of multiple different organs, the organs included in the system are also included in other systems. 

3.Another reason that the digestive system is the best is if that food is in your body and your body can't digest it then overtime the food will begin to rot and if it does not come out then you could get really sick. 

4.Without the digestive system you can't live
5.The circulatory needs the digestive systems help because you have got to keep the heart healthy.