science revision - copy
parts of a skeleton
skull
vertabrae
rib fage
humerus
pelvis
radius and ulna
femur
ribia and fibula
functions of the skeleton
produce blood cells
support
protection
movement
what is a joint?
a joint is a place in the body which two bones meet
tendons functions
connect muscle to bone
allow muscles to pull on bones for movement
not elestic
ligaments functions
Connect bones to bone
Allow movement in the joint, but keep the bones in line
Elastic or stretchy
cartilage functions
A soft tissue which covers the end of bones
Reduces friction of bones, rubbing together when moving
protect the bones
Type of joints – ball and socket
Allows the greatest range of movement
fixed joints
Allows no movement at all
Hinge
Allows movement in One Direction
Inhalation – the process of breathing in
– rib cage pulled up for an outwards
– Diaphragm contracts and moves downwards
– Volume in the lungs increases
– Air moves into the lungs
exhalation – the process of breathing out
– Rib cage, pulled downwards and inwards
– Diaphragm relaxes and moves upwards into a dome
– In the lungs decreases
– Air Moves out of the lungs
adaptions of the lungs
– Lots of blood vessels to take away, oxygenated blood
– Thin walls in the alveoli to reduce distance of diffusion
– Alveoli create a large surface area
– Moist
organism
Several different organ systems work together to allow a living thing to survive
organ system
Group of different organs come together to perform a certain function
organs
Different types of tissue work together
tissue
Similar cells working together
cells
building blocks of life, specialised
pathway of food through the digestive system:
mouth, oesophagus, stomach, small, intestine, large, intestine ,anus