The Skeleton Flashcards
(46 cards)
The bones give our body…
and they _______ and ________ our body.
it’s basic shape
support
protect
How many bones is our skeleton made up of?
over 200
Our bones, along with our __________ and __________ allow us to _________.
ligaments
muscles
move
List the three main functions of the skeleton
To support the body
To allow movement
To protect the internal parts of the body.
What would happen to our bodies if we didn’t have a skeleton?
They would collapse like a tent without the tent poles.
What is a joint
Where two bones meet / where bone meets bone
Name the two types of joints
moveable and immoveable
How do bones move?
when muscles contract to pull on a bone
Name three examples of the skeleton protecting the internal parts of the body.
protects the soft material of the brain
What do immoveable joints help do?
Protect the body
What are muscles made of?
protein
Muscles can c__________.
contract
What does to contract mean?
to become shorter
What is a muscle attached to?
bones on either side of a joint
What happens when a muscle contracts?
It pulls on one of the bones to which it is attached. This causes the bone to move while the other bone does not move.
Give an example of what happens when a muscle contracts.
In the upper arm the biceps are attached to the shoulder blade and to one of the bones in the lower arm. When this muscle contracts it pulls the lower bones in the arm upwards.
When a muscle contracts what is the pull of the muscle passed to the bone through?
a tendon
What does the tendon do?
it connects muscle to bone
What is the function of muscles and joints?
to allow movement
To allow them to work properly, tendons do not ___________
because of this they are sometimes __________ if we _________________________________
stretch
damaged
exercise too strenuously when we have not warmed up.
Where can tendons be seen in the arm? name 2
In the arm just below the wrist (especially if you clench your fist)
They can also be felt in the underside of the thigh close to the knee
What is the function of ligaments
ligaments prevent joints from being damaged by reducing the amount of movement between the bones at a joint.
ligaments connect ______________
bone to bone
what is an antagonistic pair of muscles?
Two muscles which carry out opposite effects