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The Muscular System: Homework Help Chapter Exam

What are bones and muscles?

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Involuntary muscles:
What is the largest organ in the human body?
homework help muscular system

Muscles stretch across our bones and are attached with tendons. The skeleton acts like a shield for our vital organs, such as our brain and heart. The skull protects the brain, the ribcage protects the lungs and heart, and the backbone wraps all the way around the spinal cord. Bone density measures how healthy a bone is — it shows how much mineral matter there is in a square centimetre of bone. Bone marrow is a tissue found inside bones.

Bone marrow is part of the lymphatic system, which plays an important role in the immune system — how our body fights diseases. There are six different kinds of fractures: Doctors use x-rays to help them decide how to set the broken bones so they can join back up with new cells and blood vessels.

Bones need calcium to keep healthy. Calcium can be found in dairy products, dark green leafy vegetables, nuts, orange juice and soy. Vitamin D helps the body and bones absorb calcium — fish and egg yolks both have vitamin D in them. Smooth muscles and cardiac muscles are also called involuntary muscles, because they move without you telling them to.

When muscles feel sore, it can be because of a strain — the muscle fibres have torn a bit and need time to heal. Access thousands of brilliant resources to help your child be the best they can be. What are bones and muscles? Top 10 facts about bones: Together, the bones in our body are called the skeleton. There are bones in the human body. The main bone in our head is called the skull. Bones have three parts, plus most have a substance deep inside called marrow.

Bones need calcium to keep healthy — foods like milk, nuts and broccoli all have calcium in them. We get bigger and taller when our bones grow. Doctors can tell how healthy our bones are by measuring our bone density. In addition to muscles, we have joints between our bones to do things like moving our arm up and down, and turning our head.

The longest bone in your body is called the femur, which is located in your thigh. Top 10 facts about muscles: A new, third level of content, designed specially to meet the advanced needs of the sophisticated scholar. And so much more! To Recipients Please enter a valid email address. To share with more than one person, separate addresses with a comma. Sender Name Please enter your name. Sender Email Please enter a valid email address.

By continuing to use this site, you consent to the terms of our cookie policy, which can be found in our Privacy Policy. When we move our bodies muscles with the assistance of tendons and ligaments help pull the bones in the direction we want to move.

Additionally, the heart is composed of muscle and without a functioning heart everything else is fruitless. Muscle tissue also stores needed energy in the form of glycogen, this is a reserve energy source that the body utilizes when called upon. The muscular system plays several roles in the human body. It is essential for locomotion, balance and posture, absorbing shock and heat, breathing, and digesting food.

These are just a few of the important functions that are performed by the muscular system, there are many more. If our bodies did not have muscles, we would not be able to move or even breathe and our hearts would not be able to circulate blood throughout the body. For all of these reasons, the muscular system is vital. There are three types of muscles. Cardiac muscles are found in the heart. Smooth muscles involuntary are controlled by the autonomic nervous system.

Skeletal muscles are attached to bones and allow us to move. Muscular system in human body moves the body and enables many body organs to perform their functions. Without muscles the body will not be able to carry out most of its normal processes such as circulation of blood, breathing, and digesting the food.

Also the body will not be able to move. In this way a person cannot continue to live without the contribution of muscular system in functioning of his or her body.

Skeletal muscle or voluntary muscles:

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This homework help resource uses simple and fun videos that are about five minutes long. How it works: Identify which concepts are covered on your muscular system homework.

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The Muscular System moves the body, gives it posture and circulates the blood. It is made up of three types of muscles: skeletal, smooth & cardiac muscles. It is made up of three types of muscles: skeletal, smooth & cardiac muscles.

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