How do muscles work

Question 1

What are muscles?

Answer 1

Muscles are found all over our body. They control the movements we make and help us to move our bodies.

If we think about moving some muscles, like our arm muscles, they move. Other muscles, like our heart, move on their own without us thinking about it.

Question 2

Muscles often work in _______-, pulling on your bones so that you can move. When a muscle _________ it gets _________and then relaxes to return to its normal length.

Answer 2

pairs

contracts

shorter

Question 3

Your skeleton has ________ which allow movement when your muscles contract and relax. Some of these joints are very _________, like your shoulder and hip. Others, like your knee and elbow, move a little less. Others, like your spine and neck, are only able to move a little.

Answer 3

joints

flexible

Question 4

It is important to eat a healthy diet with enough
________
to help your muscles grow properly

Answer 4

protein

Question 5

Where do we find protein?

Answer 5

We find protein in meat, fish, eggs and beans.

Question 6

Define protein;

Answer 6

A food group used for growth and repair. Foods like meat, fish, eggs and dairy products contain lots of protein.

Question 7

How many muscles are there in your body?

Answer 7

There are over 600 muscles in your body, from those in your toes to your tongue!

Question 8

We need _______ to allow us to move our limbs.

Answer 8

muscles

Question 9

Muscles are held onto the skeleton with ______ .

Answer 9

tendons

Question 10

When a muscle in your arm tightens, your arm moves ____ .

Answer 10

up

Question 11

When the muscle relaxes, your arm moves ___ .

Answer 11

down

Question 12

What attaches muscles to bones?

Answer 12

Tendons

Question 13

What happens when a muscle contracts?

Answer 13

It gets shorter

Question 14

Muscles can only ____ and cannot push.

Answer 14

pull

Question 15

How many muscles are in the adult human body?

Answer 15

600+

Question 16

Protein helps your muscles grow?

Answer 16

True

Question 17

Muscles provide the tug on the bones needed to bend, straighten, and support joints. Muscles can pull on bones, but they can’t push them back to their original position, so the muscles work in pairs of _______and _________.

Answer 17

flexors
extensors

Question 18

Muscles are how we move and live. All movement in the body is controlled by _______. Some muscles work without us thinking, like our heart beating, while other muscles are controlled by our thoughts and allow us to do stuff and move around. All of our muscles together make up the body’s ______________

Answer 18

muscles

muscular system

Question 19

There are over 600+ muscles in the human body. They are under our skin and cover our bones. Muscles often work together to help us ________. We don’t really have to think about moving each individual muscle. For example, we just think of running and our body does the rest.

Answer 19

move

Question 19

Muscles work by _______- and _________. Muscles have long, thin cells that are grouped into bundles. When a muscle fiber gets a signal from its nerve, proteins and chemicals release energy to either contract the muscle or relax it. When the muscle contracts, this pulls the bones it’s connected to closer together.

Answer 19

contracting and relaxing

Question 20

Many of our muscles come in __________. An example of this is the biceps and triceps in our arms. When the biceps contract the triceps will relax, this allows our arm to bend. When we want to straighten our arm back out, the biceps will relax and the triceps will contract. Muscle pairs allow us to move back and forth.

Answer 20

pairs

Question 21

You get 3 types of muscles?

Answer 21

Skeletal Muscles - These are the muscles we use to move around. They cover our skeleton and move our bones. Sometimes they are called striped muscles because they come in long dark and light bands of fibers and look striped. These muscles are voluntary because we control them directly with signals from our brains.

Smooth Muscles - Smooth muscles are special muscles that don’t connect to bones, but control organs within our body. These muscles work without us having to think about them.

Cardiac Muscle - This is a special muscle that pumps our heart and blood through our body.

Question 22

________________- These are the muscles we use to move around. They cover our skeleton and move our bones. Sometimes they are called striped muscles because they come in long dark and light bands of fibers and look striped. These muscles are voluntary because we control them directly with signals from our brains.

Answer 22

skeletal muscles

Question 23

__________ - Smooth muscles are special muscles that don’t connect to bones, but control organs within our body. These muscles work without us having to think about them.

Answer 23

Smooth Muscles - Smooth muscles are special muscles that don’t connect to bones, but control organs within our body. These muscles work without us having to think about them.

Question 23

_____________ - This is a special muscle that pumps our heart and blood through our body.

Answer 23

Cardiac Muscle - This is a special muscle that pumps our heart and blood through our body.

Question 24

____________connect muscles to bones. Tendons help form a connection between soft contracting muscle cells to hard bone cells.

Answer 24

Tendons

Tendons connect muscles to bones. Tendons help form a connection between soft contracting muscle cells to hard bone cells.

Question 25

When we practice an action over and over again, we get what is called ______________. It allows us to become more skilled at certain activities such as sports and music. As we practice, our muscles tune themselves to become more precise in their motions and to do exactly what our brain wants them to do. So remember, practice makes perfect!

Answer 25

Muscle Memory

When we practice an action over and over again, we get what is called muscle memory. It allows us to become more skilled at certain activities such as sports and music. As we practice, our muscles tune themselves to become more precise in their motions and to do exactly what our brain wants them to do. So remember, practice makes perfect!

Question 26

Muscles and

When we ___________ we work our muscles allowing them to become bigger and stronger. Exercise helps keep your muscles strong and flexible. If you don’t use your muscles they can atrophy, or shrink and become weak.

Answer 26

Muscles and Exercise

When we exercise we work our muscles allowing them to become bigger and stronger. Exercise helps keep your muscles strong and flexible. If you don’t use your muscles they can atrophy, or shrink and become weak.

Question 27

__________ is caused by hundreds of muscles contracting and relaxing to produce heat and make us warmer.

Answer 27

Shivering is caused by hundreds of muscles contracting and relaxing to produce heat and make us warmer.

Question 28

It takes ________ muscles to smile and _________ muscles to frown. All the more reason to smile instead of frown!

Answer 28

It takes 17 muscles to smile and 43 muscles to frown. All the more reason to smile instead of frown!

Question 29

Our longest muscle is the _________. It runs from the hip to the knee and helps us bend the knee and twist our leg.

Answer 29

Our longest muscle is the Sartorius. It runs from the hip to the knee and helps us bend the knee and twist our leg.

Question 30

The strongest muscle is in our __________ and is used for chewing.

Answer 30

The strongest muscle is in our jaw and is used for chewing.

Question 31

The smallest muscle is in our _______ and is called the stapedius. It is attached to the smallest bone in the body, the stapes.

Answer 31

The smallest muscle is in our ear and is called the stapedius. It is attached to the smallest bone in the body, the stapes.

Question 32

How would you describe muscle cells?

Answer 32

Long and thin bundles