IB sports science - topic 1 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Axial skeleton - CORRECT ANSWER - Fixed, little movement occurs. Responsible for;
support and protection of the brain, spinal cord and many internal structures.
Appendicular skeleton - CORRECT ANSWER - Responsible for; attachment, movement,
support, blood production, movement reservoir.
Long bones - CORRECT ANSWER - Work as levers, essential for movement (e.g. femur
and humerus). Types of Bones
Short bones - CORRECT ANSWER - Small and compact, provide strength for intricate
movements (e.g. carpal and tarsal bones). Types of Bones
Flat bones - CORRECT ANSWER - Protect organs and allow muscle attachments (e.g.
scapular and sternum). Types of Bones
Irregular bones - CORRECT ANSWER - Specially shaped for specific movements and
roles (e.g. cranium and vertebrae). Types of Bones
Epiphysis - CORRECT ANSWER - Two end partitions of a long bone, each covered by
articular cartilage.
Diaphysis - CORRECT ANSWER - Compact part of a long bone; a long shaft covered by
a periosteum membrane. Important for protection
Periosteum - CORRECT ANSWER - Membrane of a long bone for protection.
, MGRADES
Spongy bone - CORRECT ANSWER - Higher surface area : mass ratio, lighter and
weaker, flexible. Of a long bone at either end
Articular cartilage - CORRECT ANSWER - smooth, white tissue that covers the ends of
bones where they come together to form joints
Helps to Reduce friction and absorb shock. of a Long Bone
Bone marrow - CORRECT ANSWER - Soft fatty substance in the cavities of bones, in
which blood cells are produced Red = produces blood cells and platelets.
Yellow = stores fat. of a Long Bone
Marrow cavity - CORRECT ANSWER - Contains bone marrow.
Proximal - CORRECT ANSWER - Closer to the center of the body.
Distal - CORRECT ANSWER - Away from the center of the body.
Superior - CORRECT ANSWER - Towards the top of the body.
Inferior - CORRECT ANSWER - Towards the bottom of the body.
Medial - CORRECT ANSWER - Towards the midline.
Lateral - CORRECT ANSWER - Away from the midline.
Anterior - CORRECT ANSWER - Towards the front of the body.
Posterior - CORRECT ANSWER - Towards the back of the body.