©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
PN103 skin and membrane / skeletal system
Exam Questions and Answers 100% Solved
Flexion - ✔✔reduces angle of the joint
ex: bending the elbow
Extension - ✔✔increases the angle of a joint
ex: straightening a bent elbow
Abduction - ✔✔increases the angle of the joint to move a part away from the
midline
ex : moving arm to the side and away from body
Adduction - ✔✔decreases the angle of a joint to move a part toward the midline
ex: moving the arm in and down the side
Rotation - ✔✔Spins one bone relative to another
ex: rotating the head at the neck joint
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Circumduction - ✔✔moves the distal end of the bone in a circle, while
circumducting a joint keeping the proximal end stable
ex: moving arm in a circle at shoulder joint
True ribs (14:7 pairs) - ✔✔attach to sternum by costal cartilages
False Ribs
10 (5 pairs) - ✔✔first 3 pairs attach to sternum by costal cartilages of 7th ribs ,
lowest 2 pairs do not attach to the sternum therefor called FLOATING RIBS
Sternum 1 - ✔✔breast bone , shaped like a dagger
Synarthroses (sutures) - ✔✔no movement
produced by the fibrous connective tissues between the articulating (joining)
joints, holding them them tight together
Ampiarthroses - ✔✔slight movement
usually made up of cartilage
joining bones tightly with slight flexability
Diarthroses - ✔✔free movement
PN103 skin and membrane / skeletal system
Exam Questions and Answers 100% Solved
Flexion - ✔✔reduces angle of the joint
ex: bending the elbow
Extension - ✔✔increases the angle of a joint
ex: straightening a bent elbow
Abduction - ✔✔increases the angle of the joint to move a part away from the
midline
ex : moving arm to the side and away from body
Adduction - ✔✔decreases the angle of a joint to move a part toward the midline
ex: moving the arm in and down the side
Rotation - ✔✔Spins one bone relative to another
ex: rotating the head at the neck joint
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Circumduction - ✔✔moves the distal end of the bone in a circle, while
circumducting a joint keeping the proximal end stable
ex: moving arm in a circle at shoulder joint
True ribs (14:7 pairs) - ✔✔attach to sternum by costal cartilages
False Ribs
10 (5 pairs) - ✔✔first 3 pairs attach to sternum by costal cartilages of 7th ribs ,
lowest 2 pairs do not attach to the sternum therefor called FLOATING RIBS
Sternum 1 - ✔✔breast bone , shaped like a dagger
Synarthroses (sutures) - ✔✔no movement
produced by the fibrous connective tissues between the articulating (joining)
joints, holding them them tight together
Ampiarthroses - ✔✔slight movement
usually made up of cartilage
joining bones tightly with slight flexability
Diarthroses - ✔✔free movement
