Skeletal System P.E Flashcards
What are the main functions of the skeletal system?
Movement, Support, Protection, Production of blood cells, Mineral storage, Structural shape
Why is movement a main function in the skeletal system?
The bones act like levers and also form joints that allows muscles to pull on them and produce joint movements
Why is support a main function in the skeletal system?
Keeps the body upright
Why is protection a main function in the skeletal system?
Keeps the body upright
Why is production of blood cells a main function in the skeletal system?
Certain bones in the skeleton contain red bone marrow and the bone marrow produces red blood cells, white blood cells and platelets.
Name three examples of bones that contain marrow
Pelvis
Sternum
Vertebrae
Clavicle
Why is mineral storage a main function in the skeletal system?
The bones themselves are made of minerals and act as a mineral store for calcium and phosphorus
Why is structural shape a main function in the skeletal system?
The skeleton provides the human shape and determines the height of a shape
What is a joint?
A joint is a place where two or more bones meet and is also called an articulation.
What give joints their balance?
A joint is held together by ligaments which give the joints their stability.
Where is cartilage found?
Cartilage is found at the ends of bones and where joints meet
What to tendons do?
Tendons attach muscles to the skeleton
What is synovial fluid?
Synovial joints have synovial fluid in the joint cavity that lubricates the joint so it moves smoothly
How is the synovial fluid made?
Synovial fluid is made by the synovial membrane
What cover the end of bones?
Cartilage
Articular cartilage
What is cartilage?
Cartilage is a soft, spongy connective tissue.
What is bursae?
The bursae are fluid sacs which help to prevent friction in the joint
What is the function of joint capsule?
The joint capsule prevents wear and tear on the bones
What is a tendon?
Tendons are very strong, inelastic connective tissues that allow a muscle to pull on a bone to move it
What do ligaments connect to each other
Bone to bone
What do tendons connect to each other?.
Muscle to bone
Where is the hinge joints found?
They can be found in the knee, elbow and ankle
Where are the ball and socket joints found?
Shoulder and hip
What is the function of a rotation joint?
This is where the limb moves in a circular movement around a fixed joint towards or away from the midline of the body
What is the function of a plantar flexion joint?
Pointing the toes
What is the function of a dorsiflexion joint?
The foot moves towards the shin as if you are pulling your toes up
Types of movement in ball and socket joint
Flexion, extension, rotation, abduction and adduction
Types of movement in hinge joint
Flexion and extension
Which gel-like substance helps to lubricate the movement of joints?
Synovial fluid
Which two bones connect at the shoulder?
Scapula and humerus
What types of bones, such as carpals, are designed for strength and weight bearing?
Short bones
In which part of a bone are blood cells produced?
Bone marrow
Which function of the skeleton is most relevant during a powerful tackle in rugby?
Protection
Which type of connective tissue helps to stabilise the ankle joint during the dynamic movements of a badminton match?
Ligaments
Which of the folowing joints is an example of a hinge joint?
Shoulder
Ankle
Hip
Ankle
Which kind of joint movement describes the movement of a limb in a circle around a fixed point such as the action of the hip in a golf drive?
Rotation
Which of these movements only occurs at the ankle?
Abduction
Adduction
Planter flexion
Planter flexion
Which type of joint allows for flexion, extension, abduction and adduction?
Ball and socket
