The document summarizes the human locomotor system. It describes that the locomotor system consists of the skeleton and musculature. The skeleton is made up of bones, cartilage, and joints. It then lists important bones in the head, trunk, and limbs. The musculature section states that it is made up of all the body's muscles. It provides examples of important muscles in the head, trunk, and limbs. Tendons are also briefly described as fibers that connect muscles to bones.

1. THE LOCOMOTOR
SYSTEM
By Guille García and Pepe Calvo
December 2011

2. THE SKELETON
The locomotor system is made up of the skeleton and
the musculature.
THE SKELETON
The skeleton is made up of:
• Bones: They are hard and rigid organs.
• Cartilage: They are more flexible
than bones.

3. • Joints: They are the unions
Between two or more bones.

4. IMPORTANT BONES
Head bones:
There are two groups:
 Skull bones: protect the brain,
like the frontal, temporal,
parietal and occipital bones.
 Facial bones: like the nasal,
cheekbones and jawbone.

5. Trunk bones:
There are two sections:
The spine is made up of
vertebrae that protect
the spinal cord.
The rib cage is made up of
ribs and the sternum.

6. Limb bones:
They can be upper and lower limbs
(arms and legs):
Upper limbs: humerus, ulna
and radius, carpal bones,
metacarpals, phalanges,
clavicle and scapula.
Lower limbs: The femur, tibia
and fibula, tarsal bones,
metatarsel and phalanges.

7. THE MUSCULATURE
THE MUSCULATURE
The musculature is made up
of all the muscles in the body.

8. IMPORTANT BODY MUSCLES
Head muscles:
The masseter muscles,
the buccinator muscles
and
the orbicular muscles.

9. Trunk muscles:
In the neck, the sterno-
cleidomastoid muscle.
In the front, the abdominal
and pectoral muscles,
and the intercostal muscles.
In the back,
the trapezius muscles,
the dorsal muscles.

10. Limb muscles:
In the upper limbs, biceps,
triceps, deltoid, extensors and
flexor muscles.
In the lower limbs, the quadriceps,
buttock muscles, and
the calf muscles.

11. TENDONS
Tendons are white fibres that connect muscles to the
bones.