Bones and Joints Flashcards
what makes up the pectoral girdle
clavicle and scapula
how many bones in the human body
206
how many bones in the hand and the wrist
27
how many bones in the foot and ankle
26
what is the axis of the body
the central part
describe the arrangement of bones in the upper and lower limbs
they are very similar
label this
how many bones are we born with
around 300
why does our number of bones go from 300 to 206
as we age they fuse together
what is the first bone to form
clavicle
what is the last bone to form
clavicle
why is there articular cartilage at the ends of bones
allow lubrication and prevent rubbing between bones
where is yellow marrow found and what it is
longer bones due to presence of fat
label this
what are the epiphyseal plates
growth plates, which allow bones to become longer. they can be confused with fracture lines on x rays
can articular cartilage be seen on x rays
no
what are the three types of joints
synovial joints
fibrous joints
cartilagenous joints
describe synovial joints
extensive movement, smooth cartilage, have synovial fluid in a capsule
where are synovial joints found
in the shoulder
elbow
wrist
knee
ankle
describe fibrous joints
no synovial cavity
the joint is held together by dense connective tissue
where are fibrous joints found
the skull
describe cartilagenous joints
no synovium, little movement held together by cartilage
where are cartilagenous joints found in the body
pelvis
what is necessary for a joint
bone
cartilage
fluid
capsule
ligaments
tendons
muscles
describe the cartilage associated with joints
hyaline
what are ligaments
passive stabilisers in the ligaments
what are tendons
musculo tendinous support, active stabilisers of joints
why is there muscle on joints
to move them