7. The Skeletal System

The two parietal bones are united at the_______suture; they meet the frontal bone at the_____ suture, the temporal bones at the______ sutures, and the occipital bone at the_____suture.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. The four paranasal sinuses are the frontal, parietal, sphenoidal, and mandibular sinuses.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. The cribriform plate is a component of the ethmoid bone.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

c. The sella turcica of the sphenoid bone houses the pituitary gland.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

d. The styloid process of the temporal bone is a thick, posterior projection.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

e. The most conspicuous feature of the temporal bone is the foramen magnum.

The only moveable bone in the adult skull is the:

a. Maxilla

b. Lacrimal bone

c. Mandible

d. Frontal bone

The structure(s) that divide the nasal cavity into right and left sides is/are the:

a. Nasal bones

b. Perpendicular plate of the ethmoid bone

c. Vomer

d. Both a and b are correct

e. Both b and c are correct

The 'soft spots' in an infant's skull are known as:

a. Fontanels

b. Sutures

c. Metopic joints

d. Hyaline cartilage

Match the bones in column B with their description in column A. (Note that some descriptions require more than a single choice.)

Column A

_____ (1) connected by the coronal suture

_____ (2) keystone bone of cranium

_____ (3) keystone bone of the face

_____ (4) form the hard palate

_____ (5) allows the spinal cord to pass

_____ (6) forms the chin

_____  (7) contain paranasal sinuses

_____  (8) contains mastoid sinuses

Column B

a. ethmoid

b. frontal

c. mandible

d. maxillary

e. occipital

f. palatine

g. parietal

h. sphenoid

i. temporal

How do the relative proportions of the cranium and face of a fetus compare with those of an adult skull?

Name the cranial and facial bones and compare and contrast the functions of the cranial and facial skeletons.