20.32M
Категория: БиологияБиология

Locomotion system

1.

Locomotion system

2.

Lesson objectives
To learn the functions of locomotion
system;
To learn parts of human skeleton.

3.

Lets think!
How does our skeleton move?

4.

Locomotion system
skeletal system+muscular system
Bones are linked
together to make
up the skeleton
Muscles are
attached to bones
to provide
movement.

5.

Functions of locomotion system:
1) movement: muscles contract and relax,
so they can change their length and as
they are attached to muscles they move
them

6.

2) protection
of inner organs
3) Supports
the body
4) Produces
blood cells
5) Stores
minerals such
as P
(phosphorus)
and Ca (calcium)

7.

Parts of human skeleton
Adult human
contains 206 bones,
in babies it is
approximately 300
The skeleton is
divided into two
main parts: axial
skeleton and
appendicular
skeleton

8.

Axial skeleton include:
Skull
Backbone
Ribs
Sternum
Chest

9.

1. Skull

10.

11.

2.Backbone (vertebral column)

12.

13.

3. Chest (ribs+sternum)

14.

Appendicular skeleton include:
Arms
Legs
Pectoral girdle
Pelvic girdle

15.

1. Pectoral (shoulder) girdle

16.

2. Pelvic girdle

17.

3. Arm bones (humerus, radius, ulna,
phalanges)

18.

4. Leg bones (femur, tibia, fibula,
phalanges)
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