Question

axial skeleton
skull

1. using the key choices, identify the bones indicated by the following descrip-

tions. enter the appropriate term or letter in the answer blanks.
key choices
a. ethmoid
e. mandible
i. palatines
m. vomer
b. frontal
f. maxillae
j. parietals
n. zygomatic
c. hyoid
g. nasals
k. sphenoid
d. lacrimals
h. occipital
l. temporals

1. forehead bone
2. cheek bone
3. lower jaw
4. bridge of nose
5. posterior part of hard palate
6. much of the lateral and superior cranium
7. most posterior part of cranium
8. single, irregular, bat - shaped bone,

forming part of the cranial floor

1. tiny bones, bearing tear ducts
2. anterior part of hard palate
3. superior and middle nasal conchae

formed from its projections

1. site of mastoid process
2. site of sella turcica
3. site of cribriform plate
4. site of mental foramen
5. site of styloid process

17.

1. four bones, containing

paranasal sinuses
19.
20.

1. its condyles articulate with the atlas
2. foramen magnum contained here
3. middle ear found here
4. nasal septum
5. bears an upward protrusion, the \cocks comb,\ or crista galli
6. site of external acoustic meatus

Explanation:

1. The frontal bone forms the forehead.
2. The zygomatic bone is the cheek bone.
3. The mandible is the lower jaw.
4. The nasals form the bridge of the nose.
5. The palatines form the posterior part of the hard palate.
6. The parietals make up much of the lateral and superior cranium.
7. The occipital is the most posterior part of the cranium.
8. The sphenoid is a single, irregular, bat - shaped bone forming part of the cranial floor.
9. The lacrimals are tiny bones bearing tear ducts.
10. The maxillae form the anterior part of the hard palate.
11. The ethmoid has projections that form the superior and middle nasal conchae.
12. The mastoid process is on the temporal bone.
13. The sella turcica is on the sphenoid.
14. The cribriform plate is on the ethmoid.
15. The mental foramen is on the mandible.
16. The styloid process is on the temporal bone.
17. The occipital's condyles articulate with the atlas.
18. The foramen magnum is in the occipital.
19. The middle ear is in the temporal bone.
20. The vomer is part of the nasal septum.
21. The ethmoid has the crista galli.
22. The external acoustic meatus is on the temporal bone.

Answer:

1. B. Frontal
2. N. Zygomatic
3. E. Mandible
4. G. Nasals
5. I. Palatines
6. J. Parietals
7. H. Occipital
8. K. Sphenoid
9. D. Lacrimals
10. F. Maxillae
11. A. Ethmoid
12. L. Temporals
13. K. Sphenoid
14. A. Ethmoid
15. E. Mandible
16. L. Temporals
17. H. Occipital
18. H. Occipital
19. L. Temporals
20. M. Vomer
21. A. Ethmoid
22. L. Temporals