Download Skeletal and Muscular Systems

SKELETAL AND MUSCULAR
SYSTEMS
HEALTH TIP OF THE DAY!!
Sweating too little,
anhidrosis, can be
life-threatening
because your body
can overheat.
WHICH BODY SYSTEMS BENEFIT FROM
REGULAR PHYSICAL ACTIVITY?
1.
2.
Physical activity
strengthens your
bones, reducing the
risk of developing
fragile bones as you
age.
Improves your
balance and
coordination
HOW THE SKELETAL SYSTEM WORKS
Skeletal System Functions
 Providing support for the body
 Protecting internal tissues and organs from damage
 Acting as a framework for attached muscles
 Allowing movement of limbs and digits
 Producing new red and white blood cells
Storing fat and minerals, such as calcium and
 phosphorus
CONNECTIVE TISSUE
Three Types of Connective Tissue
Cartilage
Ligaments
Tendons
CONNECTIVE TISSUE

Cartilage can act as a cushion between two
bones or as a flexible structure for soft parts of
the body, such as the tip of the nose.
Cartilage
A strong, flexible
connective tissue
CONNECTIVE TISSUE

Ligaments attach to bones to create joints.
Ligament
A band of fibrous, slightly
elastic connective tissue that
attaches one bone to another
CONNECTIVE TISSUE

Muscles and tendons work together to move
parts of the body.
Tendon
A fibrous cord that attaches
muscle to the bone
CONNECTIVE TISSUE

All bones begin in the embryo as cartilage. Early
in development, the cartilage hardens in a
process called ossification.
Ossification
The process by which
bone is formed, renewed,
and repaired
SKELETAL SYSTEM

Growth Plate—area of growing tissue at the end
of long bones in children and adolescents
JOINTS
Flexible Joints
Ball-AndSocket Joints
Hinge
Joints
Pivot
Joints
Types of
Joints
JOINTS

A ball-and-socket joint
is a movable joint, with
one bone that is
rounded and fits within
another bone
Hip
(ball-and-socket joint)
JOINTS

The knee joint is one
example of a hinge joint.
Knee
(hinge joint)
SKELETAL SYSTEM

Injuries and Disorders





Osteoporosis
Scoliosis
Fractures
Arthritis
Carpal Tunnel Syndrome
WHICH BODY SYSTEMS BENEFIT FROM
REGULAR PHYSICAL ACTIVITY?
1.
2.
Physical activity
strengthens your
muscles
Improves your
balance and
coordination
MUSCULAR SYSTEM
Function:
1. Provides voluntary
and involuntary
movement
2. Enables the limbs
and other body parts
to move

Two ways muscles
work:
Voluntary—picking up
a ball, lifting
weights—you control
them!
 Involuntary—cardiac
muscle, muscles of
digestive system—You
don’t control them

WHAT MUSCLES DO

Skeletal muscles work
in pairs to produce
movement.
TYPES OF MUSCLES
Three Types of Muscle Tissue
Smooth
Muscle
Skeletal
Muscle
Cardiac
Muscle
TYPES OF MUSCLES

Smooth muscles are involuntary muscles.
Smooth muscles
Muscles that act on the lining of
the body’s passageways and
hollow internal organs
TYPES OF MUSCLES

Most of your muscle tissue is skeletal, and almost
all skeletal muscles are under voluntary
control.
Skeletal muscles
Muscles attached to bone that
cause body movements
TYPES OF MUSCLES

Cardiac muscle is involuntary and is
responsible for the contraction of your heart.
Your heart beats 100,000 times each day.
Cardiac muscle
A type of striated muscle
that forms the wall of the
heart
MUSCULAR SYSTEM

Injuries and Disorders






Atrophy
Bruises
Sprains and strains
Tendinitis
Hernia
Muscular dystrophy