Skeletal system, muscular system and circulatory system

Explain the role of the skeletal system in producing movement of the body

The first component that produces movement in the skeletal system is joints, as all movement occurs at joints. Different types of joint allow different types of movement, for example the ball and socket joint at the shoulder allows movement

1 of 12

in a circular 360° motion. At a joint ligaments allow movement to occur as they connect the bone to other bone. The different types of bone also allow for different types of movement. For example, long bones (e.g femur) allow powerful movements

in actions such as kicking, and short bones (e.g phalanges) allow short, sharp movements in actions such as catching.

2 of 12

The skeletal system works together to produce different types of movement, such as extension (bending a limb away from the body, increasing the angle at the joint) or flexion (bending a joint towards the body, decreasing the angle at the joint).

Other forms of movement are: adduction, abduction, rotation and circumduction.

3 of 12

Explain the role of the skeletal and muscular systems in producing movement of the body

(Include all details from "Explain the role of the skeletal system in producing movement of the body" answer), plus: most types of movement would not be able to occur without also muscles. Antagonistic pairs (such as the bicep and tricep) work

4 of 12

together by contracting and relaxing to create movement. The agonist muscle contracts when the tendon pulls up from the insertion (where the tendon attaches the muscle to the moving bone across a joint), whilst the antagonist muscle relaxes due to

tendon moving it.

5 of 12

Explain how the heart works as a double pump

The heart is a double pump as it pumps both from the right side (deoxygenated blood) and the left (oxygenated blood), which is separated by the septum. The oxygen is used up by the body and then the deoxygenated blood is transported to the right

6 of 12

atrium of the heart through the vena cava. The blood goes from the right atrium into the right ventricle through a valve, and then is pumped to the lungs through the pulmonary artery, where gaseous exchange occurs and the blood becomes oxygenated.

This blood then travels through the pulmonary vein into the left atrium, through to the left ventricle, and then pumped at high pressure through the aorta back to the body/muscles where it is needed.

7 of 12

Explain how the circulatory system transports blood, glucose, oxygen and carbon dioxide around the body

Same answer for the "Explain how the heart works as a double pump" question.

8 of 12

Explain how the circulatory system regulates our body temperature

If the body temperature is too high vasodilation will occur, which is means blood vessels expand, so they are closer to the skin's surface allowing more heat to be lost into the air. If the body is too cold the blood vessels can shrink, meaning the

9 of 12

blood vessels are further from the skin's surface, and so less heat is lost into the air. This is called vasoconstriction.

Explain how we breathe in and out

10 of 12

Air is allowed into the lungs when we breath in as the pressure of air is less in the lungs than in the air. Air comes through the mouth into the lungs. The lungs and the intercostal muscles relax (expand) meaning it moves out allowing for a higher

volume. The diaphragm moves down and flattens allowing for more space for the lungs to expand. When we breath oyt the diaphram moves back up, forcing the lungs and the intercostal muscles to contracts, pushing the air from the high pressure in the

11 of 12

lungs, to the lower pressure in the air through the mouth.

g

12 of 12

Get Revising

Skeletal system, muscular system and circulatory system

Other cards in this set

Card 2

Front

Back

Card 3

Front

Back

Card 4

Front

Back

Card 5

Front

Back

Comments

Similar Physical Education resources: