MGRADES
IB SEHS Topic 1 +2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
axial skeleton - CORRECT ANSWER - main function is to provide protection
appendicular skeleton - CORRECT ANSWER - mostly involved in movement
four types of bone - CORRECT ANSWER - long: most important bones for movement
short: articulate with more than one other bone
flat: provide protection and have broad surfaces for muscle attachment
irregular: specialized shapes and functions
structure of a long bone - CORRECT ANSWER -
joint - CORRECT ANSWER - where two or more bones come in contact or articulate with
each other; the main function is to increase mobility
different types of joints - CORRECT ANSWER - fibrous: no movement (skull)
cartilaginous: bones are separated by fibrocartilage sic or by hyaline cartilage (spine)
synovial: most common joint and most important for mobility
structure of a synovial joint - CORRECT ANSWER -
different types of synovial joints - CORRECT ANSWER - gliding: least movement
(tarsals, carpals)
hinge: flex/straighten in one direction (elbow)
pivot: one bone forms a ring and the other rolls or pivots allowing rotation (radioulnar joint)
condyloid: allow for movement up and down/side to side (b/w radius and carpal)
, MGRADES
saddle: movement up and down/side to side (metacarpal/carpal of thumb)
ball and socket: greatest mobility; can move in all directions (hip)
general characteristics of muscle tissue - CORRECT ANSWER - contract/extend,
elasticity, atrophy, hypertrophy, controlled by nerve stimuli and fed by capilaries
different types of muscle - CORRECT ANSWER - smooth: lines walls of blood vessels
and hollow organs
cardiac: involuntary control (heart muscle)
skeletal: move the skeleton; voluntary control
ankle dorsiflexion (3) - CORRECT ANSWER - tibialis anterior, extensor hallucis longues,
fibularus tertius
ankle plantarflexion (4) - CORRECT ANSWER - gastrocnemius, soleus, tibialis posterior,
flexor hallucis longus
knee extension (5) - CORRECT ANSWER - quadriceps femorus (rectus femorus, vastus
medialis, vastus lateralis, vastus intermedius), tensor fasciae latae
knee flexion (5) - CORRECT ANSWER - semimembranosis, semitendinosis, biceps
femorus, gastrocnemius, satorius
hip flexion (3) - CORRECT ANSWER - iliacus, adductors longus, tensor fasciae latae
hip extention (3) - CORRECT ANSWER - gluteus maximus, adductor mangus, bicep
femorus
hip abduction (4) - CORRECT ANSWER - gluteus maximus, tensor fasciae latae, gluteous
minimus, gluteus medius
IB SEHS Topic 1 +2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
axial skeleton - CORRECT ANSWER - main function is to provide protection
appendicular skeleton - CORRECT ANSWER - mostly involved in movement
four types of bone - CORRECT ANSWER - long: most important bones for movement
short: articulate with more than one other bone
flat: provide protection and have broad surfaces for muscle attachment
irregular: specialized shapes and functions
structure of a long bone - CORRECT ANSWER -
joint - CORRECT ANSWER - where two or more bones come in contact or articulate with
each other; the main function is to increase mobility
different types of joints - CORRECT ANSWER - fibrous: no movement (skull)
cartilaginous: bones are separated by fibrocartilage sic or by hyaline cartilage (spine)
synovial: most common joint and most important for mobility
structure of a synovial joint - CORRECT ANSWER -
different types of synovial joints - CORRECT ANSWER - gliding: least movement
(tarsals, carpals)
hinge: flex/straighten in one direction (elbow)
pivot: one bone forms a ring and the other rolls or pivots allowing rotation (radioulnar joint)
condyloid: allow for movement up and down/side to side (b/w radius and carpal)
, MGRADES
saddle: movement up and down/side to side (metacarpal/carpal of thumb)
ball and socket: greatest mobility; can move in all directions (hip)
general characteristics of muscle tissue - CORRECT ANSWER - contract/extend,
elasticity, atrophy, hypertrophy, controlled by nerve stimuli and fed by capilaries
different types of muscle - CORRECT ANSWER - smooth: lines walls of blood vessels
and hollow organs
cardiac: involuntary control (heart muscle)
skeletal: move the skeleton; voluntary control
ankle dorsiflexion (3) - CORRECT ANSWER - tibialis anterior, extensor hallucis longues,
fibularus tertius
ankle plantarflexion (4) - CORRECT ANSWER - gastrocnemius, soleus, tibialis posterior,
flexor hallucis longus
knee extension (5) - CORRECT ANSWER - quadriceps femorus (rectus femorus, vastus
medialis, vastus lateralis, vastus intermedius), tensor fasciae latae
knee flexion (5) - CORRECT ANSWER - semimembranosis, semitendinosis, biceps
femorus, gastrocnemius, satorius
hip flexion (3) - CORRECT ANSWER - iliacus, adductors longus, tensor fasciae latae
hip extention (3) - CORRECT ANSWER - gluteus maximus, adductor mangus, bicep
femorus
hip abduction (4) - CORRECT ANSWER - gluteus maximus, tensor fasciae latae, gluteous
minimus, gluteus medius
