Skeletal System Flashcards

Question

How many bones are there in the human body?

Answer 1

There are 206 bones in the human body. There are 16 different sizes and shapes.

Answer 2

Long bones, shot bones, flat bones, irregular bones

Answer 3

These are tubular in shape e.g femur, radius, humorous and ribs. They contain bone marrow in the centre which allows them to be strong but not too heavy

Answer 4

These are small squad spongy bone is covered in a thin layer of compact bone. They are light and very strong, necessary for the type of fun movement required e.g carpals and tarsals

Answer 5

these are spongy bone is between two layers of contact mums they have large surface area which is used for protection e.g scapula, pelvis and cranium

Answer 6

These are similar to short bones and a spongy bone inside and compact bone outside. They are shape to carry out their specific roles e.g the patella and vertebrae

Answer 7

The surface of joints are covered by cartilage

Answer 8

Yellow – flexible tissue. Form structure of nose and windpipe White – stronger but less elastic act as a shock absorber can be found in between the vertebrae Blue (hyline) – Found at the end of articulating bones. Very smooth, reduces friction where surfaces rub together

Answer 9

Attach bone to bone. The role of ligaments is to help join bones together and keep the joint stable during movement. they are elastical of enough to allow bones to move if ligaments become too stretched they tear and joints can be dislocated

Answer 10

Attach bone to muscle. These are chords that connect muscle to bone. They are non-elastic. They helped to transmit the power needed to move bones. When muscles contract it pulls on a tendon this causes the bone to which the tendons are attached and causes movement

Answer 11

The decreasing of an angle at a joint. example it occurs when you bring your foot back before kicking a football

Answer 12

The increase of an angle at a joint. It occurs when you follow through with your leg after kicking a ball

Answer 13

Circular movement around a fixed point. Example it occurs when doing backstroke

Answer 14

When a limb moves away from the body centre line. Example karate kicks use abduction

Answer 15

When the limb is move towards the body centre line. Example star jumps use adduction

Answer 16

A combination of abduction, adduction, extension or flexion example doing a pirouette uses circumduction

Answer 17

When two or more bones meet

Answer 18

Fibrous- fixed/immovable joints Cartilaginous– Slightly movable joints Synovial- freely moveable joints

Answer 19

This is the outer sleeve holding the bones together and keeping the synovial fluid in place this is an extension of skin it is it off fibre

Answer 20

This lines the joint capsule and secretes a liquid called synovial fluid this liquid allows friction free movement

Answer 21

Fills the capsule providing lubricant and nourishment and keeps the joint free from infection

Answer 22

Ball and socket, hinge, pivot, saddle, condyloid, gliding

Answer 23

Ball and socket – hip and shoulder. Hinge – knee and elbow, pivot – atlas and axis in neck. Saddle- thumb. Condyloid – wrist. Gliding – ankle

Answer 24

Are bones that move within a joint

Answer 25

Knee – articulating bones our femur and tibia | Elbow – articulating bones are the humorous radius and ulna

Answer 26

Shoulder – articulating bones of the humorous and scapula | Hey – articulating bones are the pelvis and femur