Unit 3 Axial Skeleton

Question 1

What are the three main parts of the axial skeleton?

Answer 1

1. The skull
2. The vertebral column
3. The thoracic (rib) cage

Question 2

What are the two sets of bones that make up the skull?

Answer 2

1. Cranium
2. Facial bones

Question 3

What are sutures?

Answer 3

Interlocking immovable joints that join all bones of the skull except the mandible (jaw bone)

Question 4

How is the mandible (jaw bone) attached to the skull

Answer 4

By a freely mmovable joint

Question 5

What are the 8 bones that make up the cranium

Answer 5

1. Frontal Bone
2. Two (2) Parietal Bones
3. Two (2) Temporal Bone
4. Occipital Bone
5. Sphenoid Bone
6. Ethmoid Bone

Question 6

What bone forms the forehead, bony projections under the eyebrows and the superior part of each eye’s orbit?

Answer 6

Frontal bone

Question 7

Which bones form most of the superior and lateral walls of the cranium?

Answer 7

The parietal bones

Question 8

What is the suture that is formed at the midline where the parietal bones meet called?

Answer 8

Sagiattal suture

Question 9

What is the suture formed where the parietal bones meet the frontal bone called?

Answer 9

Coronal suture

Question 10

Where are the temporal bones located?

Answer 10

Inferior to the parietal bones

Question 11

What is the suture that joins the temporal to the pareitsl bone called?

Answer 11

Squamous suture

Question 12

What bone forms the base and back of the skull

Answer 12

Occipital bone

Question 13

What is the suture that joins the occipital bone to the parietsl bone csalled?

Answer 13

Lambdoid suture

Question 14

What is the butterfly shaped bone that spans the width of the skull and forms part of the floor of the cranial cavity called?

Answer 14

Sphenoid bone

Question 15

What is the bone that forms the roof of the nasal cavity and part of the medial walls of the orbits called?

Answer 15

Ethmoid bone

Question 16

How many facial bones are there?

Answer 16

14

Question 17

What are the facial bones?

Answer 17

1. Two (2) maxillae (upper jaw bone)
2. Two (2) pallatine (form roof of the mouth)
3. Two (2) zygomatic (cheek)
4. Two (2) nasal (bridge of the nose)
5. Two (2) lacrimal (small bones in the eye sockets)
6. Two (2) inferioir nasal conchae (scroll-like bones in the nasal cavity)
7. One (1) Vomer (single bone that forms part of the nasal septum)
8. One (1) mandible (lower jaw bone)

Question 18

What two bones fuse together to form the upper jaw?

Answer 18

Maxillae [maxillary) bones

Question 19

All facial bones join the maxillae except which one?

Answer 19

The mandible

Question 20

What is the alveolar process?

Answer 20

A ridge of bone in the upper and lower jaws that forms the sockets for teeth

Question 21

Failure of the palentine bones to fuse results in what birth defect?

Answer 21

Cleft palate

Question 22

What bones make up the cheek?

Answer 22

Zygomatic

Question 23

Where are the lacrimal bones located?

Answer 23

Medial wall of each orbit (eye socket)

Question 24

What is the groove in the lacrimal bone for?

Answer 24

Tears

Question 25

What bone forms the bridge of the nose?

Answer 25

Nasal

Question 26

What is the lower part of the nose made up of?

Answer 26

Hyaline cartilage

Question 27

What facial bone is part of the ethnoid bone?

Answer 27

Inferior nasal conchae

Question 28

What is the largest and strongest bone of the face?

Answer 28

Mandible

Question 29

What bone forms the posterior part of the hard palate?

Answer 29

Palatine bone

Question 30

What is the bone that forms the median line or the nassl cavity called?

Answer 30

Vomer (“plow” shaped)

Question 31

What structure separates the teo nostrils?

Answer 31

Nasal septum

Question 32

What bone does the mandible join to?

Answer 32

Temporal

Question 33

What are the alveoili?

Answer 33

Teeth sockets

Question 34

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