Frog external parts Flashcards
form possesses a distinct shape and proportions that give them an advantage in inhabiting both land and water.
Frog’s body
Its body is divided into head and trunk; there is no neck and tail. The brain and the sense organs are contained within the head.
frog
situated “ahead”; contains the brain and the sense organs
Head
where the body cavity or coelom is found, this encloses the internal organs or viscera
Trunk
extension of the head; no associated coelom
*usually absent in fishes and amphibians
Neck
extends beyond the anus/vent; comprise of body-wall muscles, axial skeleton, nerves and blood vessels
*present in the vertebrate embryo but may be absent in some adult vertebrates
Tail
two pairs (Forelimbs and Hindlimbs) are connected to the trunk
*may be lost or vestigial in some vertebrates such as snakes and lizards
Appendages
Kingdom
Animalia
Phylum
Chordata
class
amphibia
order
anura
family
Ranidae
Genus
Rana
Species
Vittigera
Scientific name
Rana vittigera
Most anterior region
head
main mass of the body
Trunk
main mass of the body
Trunk
Extermities
Limbs
Body division
head, trunk, limbs
external parts
Snout, Mouth,External nares, Browspot, Eyeballs, 3 eyelids, Tympanic membranes
Most anterior tip of the head
Snout
Anterior opening
Mouth
Opening posterior to the snout
External nares
Vestigial eye
White dot between the eyes
Browspot
Bulging structures posterior to the nostrils
Eyeballs
Protect the eyeballs
Upper eyelid
Lower eyelid
Nictitating membrane
3 eyelids
Flat, rounded structures
Posterior to the eyeballs
Tympanic membranes
Limbs types
Forelimb
Hindlimb
Digits
Web
Forelimb
Upper/Anterior
Upper arm
Lower arm/ forearm
Carpus
Manus
Hindlimb
Lower/Posterior
Thigh
Shank
Tarsus
Pes
Digits
Toes or fingers
Prehallux/ Calcar
Web
in between the toes
