Unit 2 Moving lesson 3: 2.3 Muscles (+ repetition)

2.3 Muscles
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Cette leçon contient 25 diapositives, avec quiz interactifs, diapositives de texte et 1 vidéo.

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2.3 Muscles

Slide 1 - Diapositive

What is the name of joints that allow a lot of movement?
A
Synovial joints
B
Fused joints
C
Cartilaginous joints
D
Sutural connection

Slide 2 - Quiz

What is the name of the joints that keep the bones of the skull together?
A
Synovial joints
B
Fused joints
C
Cartilaginous joints
D
Sutural connection

Slide 3 - Quiz

What type of joints are the intervertebral discs?
A
Synovial joints
B
Fused joints
C
Cartilaginous joints
D
Sutural connection

Slide 4 - Quiz

New born babies have fontanelles in their skull. Later, the bones will grow together and form sutures. Why did the bones not yet grow together?

Slide 5 - Question ouverte

What type of joints are the pivot, hinge and ball-and-socket joint?
A
Synovial joints
B
Fused joints
C
Cartilaginous joints
D
Sutures

Slide 6 - Quiz

Look at the X-ray of a synovial joint. What is the name of this type of joint?
A
Pivot joint
B
Hinge joint
C
Ball-and-socket joint
D
Knee joint

Slide 7 - Quiz

PIVOT 
HINGE
BALL-AND-SOCKET

Slide 8 - Question de remorquage

Next to bones and joints, what else do you need for movement?

Slide 9 - Question ouverte

Muscles (voluntary or skeletal)
  • Muscles are attached to bones by tendons 
  • They constist of small fibres

Slide 10 - Diapositive

Today we will check your understanding about MUSCLES! 
 
There are three types:

1. voluntary muscles (you decide to move)
2. involuntary muscles (you can't control it)
3. cardiac muscle (in your heart)

Slide 11 - Diapositive

Skeletal muscles
Look at the structure of this muscle

Slide 12 - Diapositive

Muscles move the bones
Muscles can only contract
          - the muscle becomes shorter and thicker
Some muscles need other muscles to relax

Slide 13 - Diapositive

Slide 14 - Vidéo

Muscles at work
Because muscles can only contract, They work in pairs.
  • Example: Biceps and Triceps in the upper arm
  • They are called: ANTAGONISTIC PAIRS
       - they each do the opposite of the other

Slide 15 - Diapositive

involuntary muscle/smooth muslce
less strong than skeletal muscle
never tires
inside your organs (like your intestines)

Slide 16 - Diapositive

Involuntary muscle (smooth muscle)

Do you see a difference in structure?

Slide 17 - Diapositive

cardiac muscle
only in your heart
doesn't tire!
somewhere in between skeletal and smooth muscle

Slide 18 - Diapositive

Slide 19 - Diapositive

skeletal muscle strength
1. fast twitch fibers => contract faster, tire quickly, give a lot of strength (light colour) => sprinters
2. slow twitch fibers => contract slower, don't tire quickly, have less strength (dark colour) => marathon runners

Slide 20 - Diapositive

The muscles in your small intestines are ...
A
voluntary muscles
B
involuntary muscles

Slide 21 - Quiz

Skeletal muscles are voluntary muscles
A
true
B
false

Slide 22 - Quiz

The muscles in your tongue are ...
A
voluntary muscles
B
involuntary muscles

Slide 23 - Quiz

Marathon runners have a lot of ... in their muscles
A
fast-twitch fibres
B
slow-twitch fibers

Slide 24 - Quiz

What is an antagonistic pair?
A
a place where two bones meet
B
muscles that work together
C
Tendons and ligaments
D
Muscles in 2 limbs with the same function

Slide 25 - Quiz