PSIO Question and answers 100%
correct 2025/2026
One function of the skeletal system is the maintenance of homeostasis for specific mineral
concentrations in blood through storage and release of them from the skeleton. The concentration of
which minerals are controlled in this way? - correct answer ✔Calcium and phosphate
Which of the following structures contains smooth muscle? - correct answer ✔blood vessles
How many bones make up the the human skull (you can ignore the auditory ossicles in this case)? -
correct answer ✔22
Why does the upper limbs have 30 and the lower limbs have 30 despite only having 14 tarsals? - correct
answer ✔Lower limb has the addition of the patella which contributes 2 extra
How many bones in the appendicular skeleton - correct answer ✔120 plus 4 bones from the girdle and
2 from the pelvic =126
each upper limb is connected to __________ girdle, whereas each lower limb is connected to
__________ girdle. - correct answer ✔a separate pectoral; the same pelvic
how many bones in the axial skeleton? - correct answer ✔80
how many total bones in the skeleton? - correct answer ✔206
Which classification of bone describes bones which develop/form within tendons - correct answer
✔sesamoid
, Growth in the length of a long bone occurs in which anatomical region? - correct answer ✔metaphysis
What parts are responsible for growth and remodelling in long bone? - correct answer ✔endostenum
and periosteum
The periosteum, like tendons and joint capsules, is enriched with which type of extracellular matrix fiber
type? - correct answer ✔collagen (collagen fibers)
Which of the following best desribes cranial sutures? - correct answer ✔fusion points between the
bones of the cranium
Which of the following cranial sutures separates the parietal bone from the temporal bone? - correct
answer ✔squamous structure
Which of the following is NOT a bone feature of the ethmoid bone? - correct answer ✔inferior nasal
chancae
Which bone feature of the maxilla is described as a protrusion on the inferior surface and forms the
anterior portion of the roof of the mouth? - correct answer ✔
Which of the following is NOT a facial bone? - correct answer ✔middle nasal conchae
Sound vibrations travel through the auditory ossicles in which order (from first to last)? - correct answer
✔maleus, incus, stapes
What would be the consequence if our ears did not have the three auditory ossicles? - correct answer
✔sound would not be propagated from the external environment into the organs of the inner, causing
deafness
correct 2025/2026
One function of the skeletal system is the maintenance of homeostasis for specific mineral
concentrations in blood through storage and release of them from the skeleton. The concentration of
which minerals are controlled in this way? - correct answer ✔Calcium and phosphate
Which of the following structures contains smooth muscle? - correct answer ✔blood vessles
How many bones make up the the human skull (you can ignore the auditory ossicles in this case)? -
correct answer ✔22
Why does the upper limbs have 30 and the lower limbs have 30 despite only having 14 tarsals? - correct
answer ✔Lower limb has the addition of the patella which contributes 2 extra
How many bones in the appendicular skeleton - correct answer ✔120 plus 4 bones from the girdle and
2 from the pelvic =126
each upper limb is connected to __________ girdle, whereas each lower limb is connected to
__________ girdle. - correct answer ✔a separate pectoral; the same pelvic
how many bones in the axial skeleton? - correct answer ✔80
how many total bones in the skeleton? - correct answer ✔206
Which classification of bone describes bones which develop/form within tendons - correct answer
✔sesamoid
, Growth in the length of a long bone occurs in which anatomical region? - correct answer ✔metaphysis
What parts are responsible for growth and remodelling in long bone? - correct answer ✔endostenum
and periosteum
The periosteum, like tendons and joint capsules, is enriched with which type of extracellular matrix fiber
type? - correct answer ✔collagen (collagen fibers)
Which of the following best desribes cranial sutures? - correct answer ✔fusion points between the
bones of the cranium
Which of the following cranial sutures separates the parietal bone from the temporal bone? - correct
answer ✔squamous structure
Which of the following is NOT a bone feature of the ethmoid bone? - correct answer ✔inferior nasal
chancae
Which bone feature of the maxilla is described as a protrusion on the inferior surface and forms the
anterior portion of the roof of the mouth? - correct answer ✔
Which of the following is NOT a facial bone? - correct answer ✔middle nasal conchae
Sound vibrations travel through the auditory ossicles in which order (from first to last)? - correct answer
✔maleus, incus, stapes
What would be the consequence if our ears did not have the three auditory ossicles? - correct answer
✔sound would not be propagated from the external environment into the organs of the inner, causing
deafness
