The musculoskeletal system
Both system work together to make the
The skeleton consists of all the bones
in the body.
The muscular system consists of al
the muscles in the body.
-It supports the body
- It enables the movement
-It protects delicate organs such as
heart, lungs and brain.
The muscular system:
-Enables the body to move
-Gives the body its shape
-Protects the organs such as
• Fixed joints, such us the
• Movable joints, such us
knee or elbow.
• Gliding joints, such us
The ends of the bones are
covered with flexible tissue
The bones of a joint are connected
by strong elastic tissues called
Write the words of each sentence in the correct order to make sense:
1.body/ supports/ the/ the/ skeleton
2. meet/ places/ bones/ two/ joints/ where/ are/ the
3. ends/ the/ of/ cartilage/ covers/ bones/ the
4. flexible/ cartilage/ tissue/ is
5. elastic/ strong/ ligaments/ are/ tissue
Muscles can change in length:
- When they contract, they become shorter and thicker.
- When they relax, they return to their original length and
Tissues called tendons connect muscles to bones.
Body movement occurs at movable joints.
Two muscles are used in each movement. These muscles are called
antagonistic because the perform opposite actions. When one muscle
contracts, the other relaxes.
Arms bend at the elbow with a flexing movement. They straighten with an
The arm bends
The arm straightens
Decide if the following sentences are true or false. If they are false, correct them.
•When muscles contract, they become longer
•When muscles relax, they return to their original length and thickness T / F
•Tendons connect the bones of a joint
•Antagonistic muscles perform the same actions T / F
•Arms bend at the elbow with a flexing movement T / F
The nervous system sends and receives information.
It coordinates the functions of internal organs. And
it also coordinates systems like the digestive
The central nervous system consists of
This system receives information,
interprets it and decide on a response.
The peripherial nervous system consists on
nerves. It transmits information from the sense
organs to the central nervous system and from the
central nervous system to other organs.
The brain stem
The brain has got three
The spinal cord controls reflex movements
These are involuntary movements in
response to external stimuli.
Neurons are the principal cells of the nervous system. They
receive and transmit information. They are grouped together to
Read the following definitions and write the corresponding words:
1.This part of the brain controls voluntary movements.
2.This part of the brain coordinates movements and maintains the balance.
3.This part of the brain regulates internal organs.
4.These are the principal celss of the nervousn system.
5.These are involuntary movements in response to external stimuli.
To control and
They work automatically. We cannot control them with our decisions.
The body needs involuntary muscles in order to function correctly.
Functions such as
The endocrine system
sugar in the
They secrete substances called
hormones into the bloodstream
and also produces
Project: measuring your own temperature
Human body temperatures vary due to an individual´s metabolism, the time of the day and
the part of the body where we measure. Normal body temperatures range betwee 36,6º and
- When you have a very high temperature, what does it mean?