skeletal system

Question 1

what are the four types of bones?

Answer 1

long

short

flat

irregular

Question 2

what are the long bones?

Answer 2

femur

radius

ulna

humerus

tibia

fibula

Question 3

what are the short bones?

Answer 3

phalanges

tarsals

metacarpals

Question 4

what are the flat bones?

Answer 4

skull

sternum

scapula

Question 5

what are the irregular bones?

Answer 5

vertebrae

pelvic

Question 6

Describe the role of the skeletal system in blood cell production (2 marks)

Answer 6

Bone marrow is the site of red/white blood cell production

Question 7

explain the osteoarthritis (4 marks)

Answer 7

Wear/tear causes bones to grind, leading to inflammation in the joint, this causes pain/irritation

Question 8

Outline two functions of the skeletal system (4 marks)

Answer 8

Protection by providing a rigid cover for organs

Mineral store eg calcium

Question 9

Compare fibrous joints and cartilaginous joints (4 marks)

Answer 9

Both joints connect bones

Fibrous joints joined by fibrous tissue

Cartilaginous joints allow some/more movement

Cartilaginous joints are joined by ligaments

Question 10

Explain two functions of synovial fluid in a joint (4 marks )

Answer 10

Lubrication to prevent the joint rubbing or overheating

Provides additional protection after injury

Question 11

Explain the problems that a fracture to the femur may cause (6 marks )

Answer 11

Inability to move due to loss of stability

Pain due to damaged nerves

Bleeding from the femoral artery because sharp bone cut the atery

Deformity due to large muscle contracting and pulling the broken bone out of place

Infections due to exposed bone fragments in the compound fractures