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What to think about….
What are the functions of muscles?
How do muscles work? What are some of the different
types of muscles? What happens to muscles based
upon their amount of use?
Muscles and bones are joined or attached by tissue called
It is the tendons that allow muscles to move the bones.
About how much of your body weight is muscle?
This weight consists of the over muscles contained in the human body.
Skeletal MuscleSkeletal Muscle Called skeletal muscle
because it attaches to the skeleton and makes it move. These are strong muscles. MUSCLES, SUPERFICIAL LAYER, ANTERIOR VIEW
Mandible
Face
Cranium
Deltoideus
Pectoralis major
Serratus anterior
Obliquus externus abdominis
(with an indication of the Aponeurosis
which extends from this muscle
to cover the Rectus abdominis)
Rectus abdominis
Tensor fasciae
latae
Sartorius
Rector femoris
mediusGlutaeus
Vastus lateralis
Vastus medialis
Adductor longus
Pectineus
Brachioradialis
Extensor carpi radialis longus
Biceps brachii
Pronator teres
Flexor carpi radialis
Gracilis
Sternocleidomastoideus
Brachialis
Flexor digitorum sublimis
Abductor Pollicis longus
Extensor pollicis brevis
Extensor digitorum communis
Extensor carpi radialis brevis
Coracobrachialis
Tibialis anterior
Extensor digitorum longus &
peronaeus tertius
Clavicle
Scapula
Radius
UlnaSacrum
Patella
Fibula
Tibia
Pelvis
Trapezius
Soleus
Gastrocnemius
Triceps brachii
Biceps femoris
Latissimus dorsi
Peronaeus longus
These are voluntary muscles.Another name for skeletal muscle is striated muscle.
Cardiac MuscleCardiac Muscle
This is a kind of strong muscle out of which the heart is made.
Cardiac muscle can work continuously for a long period of time without getting tired.
Cardiac muscle is involuntary.
Smooth MuscleSmooth Muscle
These are muscles that line places like the digestive tract.
These weak muscles contract and relax to create peristalsis.
They are also involuntary.
Controlled vs. Automatic
-Muscles that you can control.
-Muscles that you can’t control.
How do muscles work?
Muscles work by and .
Skeletal muscles make us move. However, muscles are only capable of one type of force.
Since muscles can only pull and not push, how does this effect the way they work in the body?
The muscles have to work in pairs. One muscle of a pair bends a joint, while the other straightens it back out.
BicepTricep
•When the bicep contracts and the triceps relaxes, the arm bends.
•When the Tricep contracts and the bicep relaxes the arm straightens.
When you don’t use your muscles they become and
.
Unused muscle cells actually become smaller if not used regularly.
But, if used regularly, they become larger and stronger.
Of course, the most important muscle in the body is the
How does a strong heart benefit you?
It works more efficiently. This will give you more energy and help you live longer.
1. Which of the following is not a kind of muscle?
A. Striated B. TendonC. CardiacD. Smooth
2. What attaches muscles to the bones?
A. StriationsB. TendonsC. DiaphragmsD. Cardiacs
3. Which muscles are responsible for peristalsis?
A. TendonsB. SkeletalC. CardiacD. Smooth
4. Which muscles are responsible for your ability to move around?
A. TendonB. SmoothC. CardiacD. Skeletal
5. The stomach is surround by which type of muscle?
A. StriatedB. CardiacC. SmoothD. Tendon
6. Which of these is cardiac muscle associated?
A. HeartB. SkeletonC. TendonsD. Digestive System
7. What happens to muscles that get used regularly?
A. Get flabbyB. Grow largerC. Become weakerD. All of the above
8. What kind of muscle is the heart?
A. InvoluntaryB. VoluntaryC. SkeletalD. Smooth
REFRENCE
Reference from IC.WNLSD.CA