part 2

Question 1

–the smallest among the cranial bones of the skull.-It contains the ethmoidal sinuses w/in its labyrinths-This is where the Crista Galli is located (E.C.G). -Articulates w/ 2 cranial and 11 facial bones

Answer 1

Ethmoid Bone

Question 2

bat shape-Location of SellaTurcica/ Turkish Saddle/ -It contains the sphenoid sinuses.

Answer 2

Sphenoid Bone

Question 3

It contains the foramen Rotundum, Ovale, Spinosum located w/in the greater wing of the sphenoid, and also the Optic Foramen.-Serves as the keystone of the cranium

Answer 3

Sphenoid Bone

Question 4

Serves as the keystone of the cranium -Articulates w/ all 7 cranial bones, and 5 facial bones

Answer 4

Sphenoid Bone

Question 5

The bones of the cranial vault are composed of two plates of compact tissue separated by an inner layer of spongy tissue called

Answer 5

diploe.

Question 6

-The articulations or joints of the cranium

Answer 6

Sutures

Question 7

Classified as fibrous joints (Immovable/ Synarthrodial-type joints).

Answer 7

Sutures

Question 8

-separates the frontal bone from the two parietal bones.

Answer 8

Coronal Suture

Question 9

-separating the two parietal bones in the midline.

Answer 9

Sagittal Suture

Question 10

-separates the two parietal bones from the occipital bone.

Answer 10

Lambdoidal Suture

Question 11

-are formed by the inferior junctions of the two parietal bones with their respective temporal bones.

Answer 11

Squamosal Sutures

Question 12

Joints of the Cranium

Answer 12

-Sutures

Question 13

-are membrane-covered openings or “soft spots.”

Answer 13

Fontanels

Question 14

The anterior end of the sagittal suture.

Answer 14

Bregma-

Question 15

-The posterior end of the sagittal suture.

Answer 15

Lambda

Question 16

-are points at the junction of the parietals, temporals, and the greater wings of the sphenoid. (The pterions are at the posterior end of the sphenoparietal suture).

Answer 16

Pterions

Question 17

-are points posterior to the ear where the squamosal and lambdoidal sutures meet.

Answer 17

Asterions

Question 18

(literally meaning “great hole”).

large opening at the base of the occipital bone through which the spinal cord passes as it leaves the brain.

Answer 18

Foramen magnum

Question 19

-Lateral view The paired right and left temporal bones are complex structures that house the delicate organs of hearing and balance

situated between the greater wing of the sphenoid bone anteriorly and the occipital bone posteriorly

Answer 19

TEMPORAL BONE

Question 20

• This process meets the temporal process of the zygomatic bone (one of the facial bones) to form the easily palpated zygomatic arch

Answer 20

ZYGOMATIC PROCESS

Question 21

Inferior to the zygomatic process and just anterior to the external acoustic (auditory) meatus (EAM) is the______ into which the mandible fits to form the temporomandibular joint (TMJ).

Answer 21

temporomandibular (TM) fossa

Question 22

3 parts of Temporal Bone:

Answer 22

Squamous, Mastoid, Petrous Portion

Question 23

1st : PORTION of temporal

thin upper portion that forms part of the wall of the skull, most vulnerable portion of the entire skull to fracture

Answer 23

squamos

Question 24

2nd: PORTION of temporal

the area posterior to the EAM, with a prominent mastoid processor tip. Many air cells are located within the mastoid process.

Answer 24

MASTOID

Question 25

3rd: PORTION of temporal

also is called the petrous pyramid or pars petrosa

is the thickest

and densest bone in the cranium.

Answer 25

PETROUS

Question 26

• central depression on the body

Answer 26

SELLA TURCICA