Skeletal System

Question 1

bones have a very hard matrix due to

Answer 1

calcium salts

Question 2

cartilages have a slightly pliable matrix due to

Answer 2

chondroitin salts

Question 3

bones in human being

Answer 3

206

Question 4

two divisions of human skeletal system

Answer 4

axial
appendicular

Question 5

bones in axial skeleton

Answer 5

80

Question 6

what constitute the axial skeleton

Answer 6

skull
vertebral column
sternum
ribs

Question 7

number of cranial bones

Answer 7

8

Question 8

number of facial bones

Answer 8

14

Question 9

where is hyoid bone present and what is its shape

Answer 9

base of buccal cavity
U-shaped

Question 10

three tiny bones in each ear and what are they collectively called

Answer 10

malleus
incus
stapes

ear ossicles

Question 11

skull region articulates with the superior region of the vertebral column with the help of

Answer 11

two occipital condyles

Question 12

since our skull has two occipital condyles, it is called

Answer 12

dicondylic

Question 13

number of vertebrae

Answer 13

26

Question 14

each vertebra has a central hollow portion called ________________ through which the spinal cord passes

Answer 14

neural canal

Question 15

first vertebra is called

Answer 15

atlas

Question 16

atlas articulates with

Answer 16

the two occipital condyles

Question 17

differentiations of the vertebral canal and their numbers

Answer 17

cervical - 7
thoracic - 12
lumbar - 5
sacral - 1 (fused)
coccygeal - 1 (fused)

Question 18

flat bone on the ventral midline of thorax

Answer 18

sternum

Question 19

number of ribs

Answer 19

12 pairs

Question 20

each rib is connected dorsally to ______________ and ventrally to ________________

Answer 20

vertebral column
sternum

Question 21

why are ribs called bicephalic

Answer 21

because it has two articulation surfaces on its dorsal end to articulate with vertebral column

Question 22

first _________ pairs of ribs are called true ribs, why

Answer 22

seven
because dorsally they are attached to thoracic vertebrae and ventrally are attached to sternum

Question 23

with which cartilage

Answer 23

hyaline

Question 24

which pairs are called vertebrochondral ribs and why

Answer 24

8th, 9th and 10th pair
because they don’t attach to the sternu directly but attach to the 7th pair

Question 25

which ribs are called floating ribs and why

Answer 25

11th and 12th pair
because they are not attached to anything ventrally

Question 26

which three bones form the rib cage

Answer 26

thoracic vertebrae
ribs
sternum

Question 27

what constitute the appendicular skeleton

Answer 27

limb bones
pelvic and pectoral girdle

Question 28

each limb is made of how many bones

Answer 28

30

Question 29

bones in hand along with numbers

Answer 29

humerus - 1
radius - 1
ulna - 1
carpals - 8
metacarpals - 5
phalanges - 14

Question 30

bones in leg along with numbers

Answer 30

femur - 1
tibia - 1
fibula - 1
tarsals - 7
metatarsals - 5
palanges - 14
patella - 1

Question 31

what is patella

Answer 31

cup shaped bone that covers the knee ventrally - knee cap

Question 32

each half of a pectoral girdle consists of

Answer 32

clavicle
scapula

Question 33

scapula position according to ribs

Answer 33

between 2nd and 7th ribs

Question 34

in scapula, slightly elevated ridge is called ____________ which has an expanded process called ____________

Answer 34

spine
acromion

Question 35

below the acromion is a depression called _________________ which articulates with the head of ____________ to form the shoulder joint

Answer 35

glenoid cavity
humerus

Question 36

clavicle is also called

Answer 36

collar bone

Question 37

two bones of pelvic girdle

Answer 37

coxal

Question 38

each coxal bone is formed by fusion of

Answer 38

ilum
ischium
pubis

Question 39

cavity at which the thigh bones articulate

Answer 39

acetabulum

Question 40

two halves of the pelvic girdle meet ventrally to form _____________________________ made of _____________________

Answer 40

pubic symphysis
fibrous cartilage