Skeletal & Muscular Systems

clavical

Patella(Knee Cap)

How many bones do you know?

WHAT ARE THE FUNCTIONS OF THE SKELETAL SYSTEM?

Provides shape to the body

Muscle attachment

Protects certain organs

WHAT ORGANS ARE PROTECTED?

Brain Heart & Lungs

HOW MANY BONES DO WE HAVE IN OUR BODY?

206Babies are born with 270

soft bones - about 64 more than an adult; and many

of these will fuse together by the age of twenty or twenty-five into the 206 hard, permanent bones.

Define Joint:

The point where 2

bones come

together.

TYPES OF JOINTS Pivot (Swivel): Rotation around a fixed point

Ellipsoidal: Allows movement in all ways except rotation.

Saddle : allows movement in two directions.

Ball & socket: round end of one bone fits into cup like end of another, most movement

Hinge: Simplest joint, allows backward and forward movement.

Plane (Gliding): 2 flat surfaces of bone slide over each other.

WHAT CONNECTS BONE TO

BONE AT A JOINT?

Ligaments

WHAT IS THE TISSUE THAT CONNECTS MUSCLE TO BONE?

Tendon

The Achilles tendon is the largest tendon in the human body and can withstand forces of 1,000 pounds or more. But it is also the most vulnerable and frequently ruptured tendon.

WHAT CUSHIONS THE BONES IN A JOINT?

Cartilage

MUSCULAR SYSTEM

What muscles do you know?

DeltoidsPectorals

Bicep

Abs

Quadriceps

Trapezius

Triceps

LatissimusDorsi

Gluteus Maximus

Hamstrings

Gastrocnemius

Movement

Creates heat

Protection of the joints

WHAT ARE THE FUNCTIONS OF THE MUSCULAR SYSTEM?

How do muscles work together to cause movement? The muscles work in pairs

to keep your body moving

When one muscle contracts (shortens), the other one relaxes (lengthens)

Ex… the biceps and triceps muscles work as a pair to bend and straighten the arm (flexion and extension)

Aerobic vs. Anaerobic…what’s the difference?

Aerobic Activities…The body uses oxygen to strengthen the heart and lungs, builds endurance.

Anaerobic Activities…used for building muscle cell size

WHY IS IT IMPORTANT TO HAVE BOTH AEROBIC AND

ANAEROBIC ACTIVITIES?

What are some examples of both?