Transcript The Muscular System

The Muscular System
Chapter 15-3
Page 488
Muscle Facts
 Muscles are tissues that can shorten along
their length
 Muscles only move things when they
contract or shorten
 There are more than 600 muscles in the
muscular system
Muscular System
 The Muscular System works
with the Skeletal System to
provide movement.
 The Muscular System works
within internal organs to
support bodily functions
2 Muscle Categories
Voluntary Muscles
Involuntary Muscles
Skeletal
Smooth
Cardiac
Voluntary Muscles
 Muscles that are under conscious
control
Examples:
 Muscles that move joints (biceps
and triceps)
 Muscles that move skin (smiling,
raising your eyebrows)
Voluntary Muscles
Voluntary Muscle -
Involuntary Muscles
 Muscles NOT under conscious control
 Examples: heart, digestive organs,
diaphragm (breathing)
Involuntary Muscles
Involuntary Muscles
3 Types of Muscle Tissue
1. Skeletal Muscle
2. Smooth Muscle
3. Cardiac Muscle
3 Types of Muscle Tissue
Skeletal Muscle
P 489
Muscle attached to the
skeleton, making
movement possible
Skeletal Muscle -
Smooth Muscle P 489
Involuntary muscle found
inside many internal
organs of the body
Smooth Muscle -
Cardiac Muscle -
p489
Muscle tissue found
only in the heart
3 Types of Muscle Tissue
Striated Muscle
(cardiac)
Striated Muscle
(skeletal)
Smooth Muscle -
Voluntary
Involuntary
Involuntary
Striated
Non-Striated
Striated
Quickly
Slowly
Yes
No
No
Attached to
skeleton
Internal
Organs &
Blood Vessels
Heart
Quickly
Tendon P 490
Strong connective
tissue that attaches
a muscle to bone.
Tendon
Tendon Video
Quiz
Flexor Muscle that bends a
joint.
Flexor -
Extensor Muscle that straightens a
joint.
Extensor -
Quiz
Injury
Care of Skeletal & Muscular System
Explain how exercise improves
muscular strength and flexibility.
1. Individual cells grow wider,
muscle becomes thicker
2. Exercise & stretching
lengthens muscles which
increases flexibility
Skeletal & Muscular Systems REVIEW
Quiz
1. An adult has how
many bones in their
body?
a) 100
b) 300
c) 206
d) 210
Quiz
2. Some animals have
skeletons on the outside of
their bodies. This kind of
skeleton is called an
______.
a) endoskeleton
b) internal skeleton
c) exoskeletons
Quiz
3. Connective tissues connect muscles to
bone. These connective tissues are
called _______?
a) Ligaments
b) Tendons
c) Exoskeleton
d) cartilage
Quiz
4. Bones are attached to one
another with tissue called
______.
a)
b)
c)
d)
ligaments
tendons
exoskeletons
cartilage
Quiz
5. A soft tissue found inside
some of the bones of our
skeletal system is where new
blood cells are made. Name
of this tissue is __________.
a)
b)
c)
d)
marrow
tendon
cartilage
ligament
Quiz
6. The elbow is an example of
which kind of joint?
a)
b)
c)
d)
Hinge
Ball-and-socket
Pivot
fixed
Quiz
7. The shoulder and upper arm are an
example of which kind of joint?
a)
b)
c)
d)
Hinge
Ball-and-socket
Pivot
fixed
Quiz
8. The bones of the skull are an example of
which kind of joint?
a) ball& socket
b) hindge
c) pivot
d) fixed
Quiz
9. Name the 3 kinds of muscles found in
human beings.
Quiz
10. How are involuntary and voluntary
muscles different from each other?