IB sports and health science unit UPDATED
ACTUAL Exam Questions and CORRECT
Answers
5 sections of the vertebral column + number of vertebrae for each - CORRECT
ANSWER - Cervical (7)
Thoracic (15)
Lumbar (5)
Sacrum (5, fused)
Coccyx (4, fused)
Material and function of vertebral discs - CORRECT ANSWER - Fiberus Cartilage -
shock absorber in between your vertebra
2 ways the skeleton provides protection - CORRECT ANSWER - 1. The cranium protects
the soft tissue of the brain.
2. The rib cage protects the delicate heart and lungs.
2 ways the skeleton allows movement - CORRECT ANSWER - 1. The vertebrae allow us
to bend, stretch and rotate our body
2. The bones and joints work with muscles to enable us to walk, run and sprint.
2 ways the skeleton support the body - CORRECT ANSWER - 1. The bones of the legs
support the body
2. The vertebrae support the head
2 other functions of the skeleton (not movement, protection, support) - CORRECT
ANSWER - 1. Makes Blood (Red blood cells are made in the ribs and limb bones)
2. Storage of Minerals
, MGRADES
3 reasons a human may not have 206 bones - CORRECT ANSWER - -Necessary
amputations
-Cosmetic Surgery
-Babies are born with more bones that later fuse together
Proximal vs Distal - CORRECT ANSWER - Proximal (closer to): mandible is proximal to
cranium
Distal (further away): phalanges are distal to cranium
Superior vs Inferior - CORRECT ANSWER - Superior (toward the head): clavical is
superior to the tibia
Inferior (toward the foot): fliblia is inferior to the ribs
Medial vs Lateral - CORRECT ANSWER - Medial (toward the middle): Iliums are medial
to the cranium
Lateral (toward the outside): Radius is lateral to the ulna
Anterior vs Posterior - CORRECT ANSWER - Anterior (toward the front): Sternum is
anterior to vertebral column
Posterior (toward the back): Vertebral column is posterior to sternum
4 types of bone - CORRECT ANSWER - Long Bones (femur, humerus)
Short Bones (carpals, triquetral)
Flat Bones (sternum, iliums)
Irregular Bones (vertebral, spinal column)
Diffusion - CORRECT ANSWER - The net movement of particles from an area of high
concentration to low concentration via random movement