Frog Skeletal System Flashcards
axial system consist of
skull, upper and lowe jaw, hyoid apparatus, sternum and the vertebral column
appendicular system consists of
pectoral or shoulder girdle and forelimb skeleton and the pelvic or hip girdle and the hind limb skeleton
protector of the delicate brain and sense organs
skull
passage of the cranial nerves and blood vessles
foramina
supports the mouth borders
upper and lower jaw
supports the floor of the mouth and the larynx
hyoid apparatus
protects the spinal cord and its hollow and provides axial support for the trunk
vertebral column or backbone
gives protection to the soft organs located in the breast region, notably the heart, and firm support for the pectoral girdle
sternum or breastbone
provides support for the bones of the forelimb
pectoral girdle
for the bones of hindlimb
pelvic girdle
first vertebra
atlas
plays an important role in the series because it is the bone that bears the weight of the skull
atlas
2nd to 9th vertebra
trunk vertebrae
chief axial support of the body
trunk vertebrae
9th vertebra
sacral vertebra
giving firm support to the hip region and providing a fulcrum togerther with the last vertebra
sacral vertebra
10th vertebra
urostyle
a fusion of several vertebra
caudal
provides a firm axial support to the hinder and of the trunk
urostyle
a continuous tunnel is produced within the column, which lodges the spinal cord in life
vertebral canal
base of the vertebra
body or centrum
supported by two pedicles, forming an arch above the centrum
neural arch
top of the neural arch
neural spine
two pairs of processes lying on the fore and aft of the neural arch
- prezygapophyses
2. postzygapophyses
located on the anterior end, they have smooth surfaces or facets on the upper part
prezyga…
located on the posterior end, facets lie on the underpart
postzyga…
processes give added strength to the trunk
transverse process
serves passage of the spinal cord
vertebral foramen
serves as exit for the spinal cord
intervertebral foramen
serve for articulation with the occipital condyles at the back of the skull
facets
main component of the skull
cranium
contains such structures known as the upper and lower jaw and the hyoid apparatus
branchial skeleton
part which contains the brain
neurocranium or braincase
encloses the organ of smell
nasal capsules