frog organs

Question 1

what are some adaptations on the frog skull?

Answer 1

have a fenestrated palate (frontoparietal complex) meaning it has holes between the skull

there is also a muscle to retract the eyeball into the buccal cavity

and a muscle to lift the eyeball after swallowing
causing eye bulging

Question 2

how has the frog skeleton evolved?

Answer 2

elongated ilium bone - urostyles

reduced presacral vertebrae

elongated tarsals

fused tibia and fibula, fused radius and ulna

Question 3

how has the pelvis evolved?

Answer 3

elongated ilium on the hip bone

there is also a mobile hinge at the sacral pelvis junction
pectoral girdle has evolved to absorb landing impact

Question 4

what are some of the adaptation on the hands of the frog?

Answer 4

aquatic frogs have claws

tree frog have digital pads

Question 5

what are the respiratory adaptations?

Answer 5

buccal force pump:
- narrow vocal slits on each side of the buccal cavity
there is also an elastic vocal sac chamber

Question 6

how is osmoregulation controlled?

Answer 6

kidneys

urinary bladder

ventral skin

Question 7

what is special about the frog heart?

Answer 7

3 chambered heart:
for cutaneous and pulmonary respiration

Question 8

how does fertilisation occur?

Answer 8

fertilisation usually external

amplexus - position

sperm is ejected onto eggs as the female lays