Question

QUESTION 1

Match the following.

This bone of the vertebrate skull is called Zygomatic in humans

Which of these bones develops from Branchial Arch number 2

The Squamosal bone fuses with others of the vertebrate skull to become this bone in mammals

This bony plate covers the gills of bony fish

Tooth-bearing bone that cats have but humans do not

The fused caudal vertebrae within the tail of a bird are called this

Bone of the skull that forms part of the jaw joint in non-mammals

Which term refers to True ribs?

Which bone of the mammalian skull is the Foramen Magnum within?

Which term refers to False ribs?

This bone is the single elongate caudal vertebra of a frog

In birds, some of the trunk vertebrae and sacral vertebrae fuse to form this

The ventral plate of a turtle shell

This part of a lumbar vertebra represents the fusion of a transverse process and a rib

These are the individual pieces that together form the sternum in a cat

A.

Sternebrae

B.

Temporal

C.

Jugal

D.

Plastron

E.

Pygostyle

F.

Occipital

G.

Vertebrochondral

H.

Operculum

I.

Vertebrosternal

J.

Pleurapophysis

K.

Premaxilla

L.

Synsacrum

M.

Quadrate

N.

Urostyle

O.

Hyoid

Answer 1

Ans: Zygomatic bone in humans is homologous to Jugal in other vertebrates ( C)

Hyoid bone ( O) developes from Branchial arch no 2

The Squamosal bone fuses with the periotic bone and the auditory bulla to form the temporal bone in mammals (B)

Operculum covers the gills of bony fish. (H)

In birds few caudal vertebrae are fused into a single ossification called the Pygostyle. (E)

The quadrate bone is part of a skull in most tetrapods, which connects to the quadratojugal and squamosal in the skull, and forms part of the jaw joint. (M)

True ribs are the first seven ribs, which attach to the sternum on the ventral side. These are also called Vertebrosternal ribs. ( I )

The foramen magnum is a large oval opening in the occipital bone of the skull in humans and other animals. ( F)

The false ribs attach to the cartilage of the true ribs. These are also called Vertebrochondral ribs. (G)

In frogs, both cervical and sacral regions each consist of only one vertebra,  called Urostyle. (N)

The synsacrum is a skeletal structure of birds, in which the sacrum is extended by incorporation of additional fused caudal or lumbar vertebrae. (L)

Plastron is the ventral plate of a turtle shell, and it is made up of nine bones. ( D)

Sternebrae are the individual pieces that together with manubrium and xiphoid process make the sternum of cat. (A)