Question 1

________ Associated with the first pharyngeal arch cartilage&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

Development of the mandible is associated with the cartilage of the first pharyngeal arch.As this cartilage degenerates,the condensed mesenchyme near it undergoes intramembranous ossification to form the mandible.

Question 2

________ Centrum&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The major part of the body of a typical vertebra is formed by the centrum.It is ossified from a primary center that appears dorsal to the notochord.The centrum occasionally is ossified from bilateral primary centers.

Question 3

________ Forms by intramembranous ossification&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium

Accepted Answer

The frontal bone,part of the membranous neurocranium,develops by intramembranous ossification from two primary centers.The halves of the frontal bone begin to fuse during the second year,and the frontal (metopic)suture usually is obliterated by the eighth year.

Question 4

________ Forms in the maxillary prominence of the first pharyngeal arch&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The maxilla forms in the maxillary prominence of the first pharyngeal arch by intramembranous ossification.It is part of the membranous viscerocranium,as are the mandible,zygomatic,and squamous temporal bones.

Question 5

________ Part of the membranous neurocranium&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The parietal and other flat bones of the cranium are parts of the membranous neurocranium that develop by intramembranous ossification.At birth,they are separated by connective tissue sutures.

Question 6

________ Forms in the mandibular prominence of the first pharyngeal arch&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The mandible is the part of the membranous viscerocranium that develops mainly by intramembranous ossification around the degenerating cartilage of the first pharyngeal arch.

Question 7

________ Normally regress during the eighth week&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The paired somites begin to differentiate from the paraxial mesoderm in a craniocaudal sequence during the third week.By the end of the fifth week,42 to 44 pairs of somites are present.The coccygeal somites regress with the tail-like caudal eminence during the eighth week.

Question 8

________ Part of the cartilaginous viscerocranium&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The styloid process of the temporal bone and the malleus,incus,and stapes are derived from the cartilaginous viscerocranium.

Question 9

________ Partly within the pharyngeal arches&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium

Accepted Answer

The ends of the cartilaginous rods in the first and second pairs of pharyngeal arches reach the ventral surface of the neurocranium in the region of the developing ears.Later,they undergo endochondral ossification to form the lesser horns and the superior part of the body of the hyoid bone.

Question 10

________ Neurocentral joint&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

As stated above,the neurocentral joints are located between the centrum and the vertebral arch.In the superior cervical vertebrae,the centra unite with the vertebral arches about the third year,but in the inferior lumbar vertebrae,union is not completed until the sixth year.

Question 11

________ Form the tongue muscles&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Form the tongue muscles&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E...

Question 12

________ Styloid process&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium

Accepted Answer

The answer of ________ Styloid process&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium...

Question 13

________ Primary ossification center&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium

Accepted Answer

The answer of ________ Primary ossification center&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous...

Question 14

________ Replaced by a synovial joint&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Replaced by a synovial...

Question 15

________ Disappears during childhood&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Disappears during childhood&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E...

Question 16

________ Closes during the second year&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium

Accepted Answer

The answer of ________ Closes during the second year&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal...

Question 17

________ Growth of long bones&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior fontanelle&#10;E)Cartilaginous viscerocranium

Accepted Answer

The answer of ________ Growth of long bones&#10;A)Centrum&#10;B)Epiphysial plate&#10;C)Frontal bone&#10;D)Anterior...

Question 18

________ Its cartilage is ossified during infancy&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Its cartilage is ossified...

Question 19

________ Part of the cartilaginous neurocranium&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Part of the cartilaginous...

Question 20

________ Articulates with the centrum&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Articulates with the centrum&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E...

Question 21

________ Muscles originate from somites&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Muscles originate from somites&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E...

Question 22

________ Form the scalene muscles&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Form the scalene muscles&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E...

Question 23

________ Give rise to the muscles of mastication&#10;A)A&#10;B)B&#10;C)C&#10;D)D&#10;E)E

Accepted Answer

The answer of   ________ Give rise to the...

Deck 13: Skeletal and Muscular Systems