The Muscular System

The Muscular System

Susan Levin 2011

What muscles are you using right now?

Make a list

Exit Ticket

What are the functions of the muscular system?Why do muscles work in pairs?

Science Words to know

• Muscle• Voluntary muscle• Involuntary muscle• Skeletal muscle• Smooth muscle• Cardiac muscle• Tendon

What do muscles do?

• Hold my organs in place• Hold my bones together so

that I can move• Help me digest my food• Help me breathe• Open and close my eyelids• Pump my blood• Allow me to run and play• Help me to smile

Functions of the muscular system

• Produce movement

• Maintain Posture

• Stabilize joints

• Generate heat

Moving the human body

• Muscle - an organ that contracts and gets shorter- this provides the force to move your body parts.

• Muscles and bones work together, coordinated by the nervous system

Muscles of thebody

Parts of the muscular system

• Muscles – over 600• Tendons

Tendons attach muscles to bone helping your body move.

Feel your tendon right above your heel in the back of your leg. This is the thickest tendon in your body – Achilles tendon.

What are muscles made of?

•Stretchy, elastic muscle cells

• Made of proteins

What else is stretchy like a muscle?

Muscle Control

• Voluntary muscles - muscles that you are able to control

Can you think of examples?

• Involuntary Muscles - you can not move them consciously. They just keep working

Can you think of examples?

What muscles are both voluntary and involuntary? (I can think of 2)

Where to find information

• Use textbook pg 51-53

Striated means striped.

Notes:• Appearance, voluntary/involuntary, where found, when it tires,

etc

Compare and Contrast

• Use textbook page 51-53

• Use a WHOLE PAGEto make a Venn Diagram

Skeletal

SmoothCardiac

Types of Muscles

Types of muscles

Muscles

Types of Muscles - Skeletal

• Skeletal Muscles-muscles that move bones

• Attached to bones by tendons• Most numerous in the body• Look striped or striated• Voluntary muscles• Tire easily• Quick to react

Types of Muscles - Smooth Muscles

• Smooth muscles - non-striated• Involuntary• Move the internal organs • Contract and relax slowly• Example- small intestine,

stomach, digestive system, bladder

Types of Muscles - Cardiac Muscle

• Cardiac muscle - found only in the heart

• Involuntary• Striations (stripes)• Contracts about 70 times a

minute every day of your life.• Does not tire• Slow to react• Medmovie : heart anatomy …

then anterior heartbeat

How Muscles Work

• Skeletal muscles – work in pairs - when one muscle contracts- another muscle relaxes muscles work in pairs - bbc

• Muscles always PULL - never push

• Muscles use glucose and oxygen to make energy

• Produce heat when they contract

• Muscles that are not exercised become smaller Kidshealth.com

Muscles and Bones Work Together

• Bones and muscles: the skeletal and muscular system United streaming 2 min

Brainpop

A review

One way to keep muscles strong…

• Eat foods from the protein group every day. They are high in protein which helps to build strong muscles.

• What kinds of foods are high in protein?

• Exercise every day.

What are some things you can do every day to help keep your muscular system healthy?

Learning “Write”:

• If smooth muscles had to be consciously controlled what problems do you predict in day-to-day living? Write a story.

• Write an article for the Courier about preventing skeletal and muscular injuries. Focus on ways the athletes can reduce the risk of injuries. Use textbook p. 46 - 49