Class Overview
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Alcohol/Tobacco/Other Drugs
Decision Making
Communicable/Non-Communicable Diseases
First Aid / Accident Prevention
Human Growth and Development
Body Systems
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Muscular
Nervous
Endocrine
Reproductive System
The Muscular System
Mr. Gerlach’s
7th Grade
Health Education
The Muscular System
Defn: Is a tough group of tissues that make
your body parts move.
 Fact: You have over 650 major muscles in the
body and they work the same way. Over 50 of
those muscles are in your face alone. It takes
17 muscles to smile and over 40 to frown.
 The strongest muscle in your body is the
masseter muscle, located on each side of the
mouth.
 Your most active muscles are those in your
eyes. They move more than 100,000 times a
day.

Muscles Work in Pairs

They work in Pairs
either contracting
(shortening) or
extending
(lengthening).
– Ex. Bicep contracts
while Triceps extend
Views of the Body
Anterior View
Posterior View
Three Types of Muscle

Smooth Muscles: Are found in various organs
in the body, such as the stomach and the
intestines. You have no control over these
muscles.
Three Types of Muscle

Skeletal Muscle: These muscles are attached
to a bone, which allows the skeleton to move.
For example you can make your arms and legs
move whenever you want to.
Three Types of Muscles

Cardiac Muscle: Only found in the walls of the
heart. Cardiac muscles are constantly
contracting and relaxing, pumping blood to all
parts of the body.
Three Types of Human Muscle
Tissue
Skeletal
Smooth
Cardiac
Three Types of Muscles
Types of Muscle Movement

Involuntary – You
cannot control
– Smooth Muscle

Voluntary- You
Control
– Striated Muscle
Human Muscular System
Diagram
Deltoid
Pectoralis major
Biceps brachi
Gluteus maximus
Rectus femoris
Gastrocnemius
Parts of the Muscular System
Parts of the Muscular System
Trapezius Muscle
Parts of the Muscular System
Latisimus Dorsi Muscle
Parts of the Muscular System
Bicep & Tricep
Parts of the Muscular System
Gluteus Maximus Muscle
Parts of the Muscular System
Hamstring
The Three Hamstring Muscle
Semitendinosus Muscle
Semimembranosus Muscle
Bicep Femoris Muscle
Calf Muscles
Gastrocnemius & Soleus Muscle
Achilles Tendon
Extensor Muscles
Flexor Muscles
Major Pectoral
Abdominal Muscles
Abdominal Muscles
Internal Obliques
External Obliques
The Quadriceps
Anterior Tibialis
Parts of the
Muscular
System
Latissimus Dorsi
•Deltoid
•Trapezius
•Extensors
•Triceps
•Gluteals
•Hamstring
•Achille’s Tendon
•Soleus
•Gastrocnemius
The Muscular System
•Major Pectoral
•Biceps
•Flexors
•Sartorius
•Quadriceps
•Abdominals
Problems of The Muscular System

Pulled or Torn Muscle
– Treatment: Medical
Help

Strain: Soreness due
to overwork
– Treatment: Rest, ice
or heat
Problems of The Muscular System

Tendonitis: Stretched
or torn tendon.
– Treatment: Rest and
ice to possible surgery

Cramp: Muscle unable
to relax; feels tight
and sore
– Treatment: Message /
Drink fluids
Problems of The Muscular System

Muscular Dystrophy:
Weakening of the
skeletal muscles,
eventually inability to
walk or stand.
– Treatment: No Cure
The Skeletal / Muscular System
Test Questions
Latissimus Dorsi
Deltoid
Trapezius
Extensors
Triceps
Gluteals
Hamstring
Achille’s Tendon
Soleus
Gastrocnemius
Major Pectoral
Biceps
Flexors
Sartorius
Quadriceps
Abdominals