Skeletal systems

Question 1

functions of the skeletal systems: support

Answer 1

this helps us stand upright, and allows the bones to take most of the weight and lets the squishy tissues have something to hold onto

Question 2

functions of the skeletal systems: movement

Answer 2

Our bones act as levers, they allows us to move around without melting into the floor
our muscles pull on the bones for movement to occur

Question 3

functions of the skeletal systems: protection

Answer 3

Our bones protect our major organs
i.e.
skull protects our brain
ribcage protects our heart and lungs
our vertebrate protects our spinal cord

Question 4

functions of the skeletal systems: storage

Answer 4

Our bone store different minerals and these therefore make them stronger
i.e. calcium and red blood cells

Question 5

functions of the skeletal systems: red blood cell formation

Answer 5

The red marrow is found within the center of the bones in the medullary cavity
when younger = more red blood cells
when older = more yellow and fattier

Question 6

medullary cavity

Answer 6

This is a cavity in the center of the bone that holds minerals and red blood cells/red marrow

Question 7

Axial skeleton: different divisions

Answer 7

Skull
sternum
Ribs
Vertebral column
Sacrum
Coccyx

Question 8

Axial skeleton: what are the divisions used for?

Answer 8

the divisions are used for protection of vital organs

Question 9

Axial skeleton: Parts of the skull

Answer 9

The cranium, facial bones, joins at sutures

Question 10

Axial skeleton: Cranium

Answer 10

The cranium (vault) encloses the brain and allows for the jaw and neck muscles to have something to attach to

Question 11

Axial skeleton: facial bones

Answer 11

Our facial bones protect our sensory organs
i.e. eyes (optic nerve), ears, nose, tongue

Question 12

Axial skeleton: join at sutures

Answer 12

These are immovable joints

Question 13

Axial skeleton: The vertebral column

Answer 13

this keeps the trunk upright, there are lots of muscle and ligament attachments and also supports our head

Question 14

Axial skeleton: the vertebral column divisions

Answer 14

cervical (7): 7am breakfast
- supports the head and enables movement
thoracic (12): 12pm lunch
- is in the middle and makes up most of your back
lumbar (5): 5pm dinner
- takes all the weight of the body
sacrum and coccyx
- fused vertebrate

Question 15

Axial skeleton: the vertebral column extras

Answer 15

rib cage (thoracic cage): 12 each side
- protects our heart and lungs
- 2 ribs at the bottom are just floating (each side)
sternum (breastbone)
- mainly protects our heart/front of chest

Question 16

Appendicular skeleton: limb bones

Answer 16

femur
humorous
tibia, fibula
ulna, radius

These are most important for movement

Question 17

Appendicular skeleton: regions

Answer 17

Arm: proximal part of upper limb
forearm: distal part of upper limb
thigh: proximal part of lower limb
leg: distal part of lower limb