Comparative Anatomy : Aortic arches : Test 3

1) According to mode of.......arrangement of aortic arches show variation.

• respiration

• excretion

• digestion

• none of the above

The Vertebrate animal has a maximum .........pairs of aortic arches.

• 4

• 5

• 6

• 7

In Scoliodon the first pair of aortic arch (the mandibular) disappears ,hence there are only..........pairs of aortic arches.

• 3

• 4

• 6

• 5

In Labeo there are.........pairs of aortic arches.

• 3

• 4

• 5

• 6

The connection between third and fourth aortic arches is known as.......

• ductus caroticus

• ductus arteriosus

• ductus botalli

• pulmonary

Connection between sixth aortic and dorsal aorta is called.........

• ductus caroticus

• ductus arteriosus

• ductus botalli

• pulmonary

Two systemic arches join together and form dorsal aorta in .........

• birds and mammals

• mammals and reptiles

• amphibians and reptiles

• birds and amphibians

In Aves..........systemic arch forms median dorsal aorta.

• right

• left

• both right and left

• none of these

In mammals .........systemic arch forms median dorsal aorta.

• right

• left

• both right and left

• none of these

In reptiles, birds and mammals the.........aortic arch becomes the carotid artery.

• first

• second

• third

• fourth