Bones Of The Skull

Question 1

The skull consists of the __ bones that forms the cranium, __ bones that form the face, and __ bones in the middle of the ear.

Answer 1

8 bones that form the cranium: frontal, parietal(2), temporal(2), occipital, sphenoid, and ethmoid bone.
14 bones that for the face: nasal bones(2), zygomatic bones(2), maxillary bones(2), palatine bones(2), lacrimal bones(2), inferior conchae(2), the vomer bone, and mandible.
6 bones in the middle of the ear: malleus, incus, and stapes

Question 2

The cranium is the portion of the skull that:

Answer 2

Encloses and protects the brain (crani mean skull, and -um is a noun ending).

Question 3

The cranial bones are joined by jagged fibrous joints that are often referred to as ________.

Answer 3

Sutures.

Question 4

The frontal bone is one of the 8 bones in the cranium and it is the _______ portion of the cranium that forms the forehead.

Answer 4

Anterior
This bone houses the frontal sinuses and forms the roof of the ethmoid sinuses, the nose, and part of the socket that protects the eyeball.

Question 5

The parietal bones are two of the (smallest/largest) bones of the skull

Answer 5

Largest
Together they form most of the roof and upper sides of the cranium.

Question 6

The occipital bone forms the ______ part of the skull and the ______ of the cranium

Answer 6

Back, base

Question 7

The two temporal bones form the

Answer 7

Sides and base of cranium

Question 8

The external auditory meatus is the opening of the

Answer 8

External auditory canal of the ear. This canal is located within the temporal bone on each side of the skull.

Question 9

A meatus is the

Answer 9

External opening of a canal.

Question 10

The sphenoid bone is an _______, _______ shaped bone at the base of the skull. This bone makes contact with all of the other cranial bones and helps form the base of the ________, the sides of the _______, and the floors and sides of the ____ ________.

Answer 10

Irregular, wedge-shaped
Cranium, skull, eye sockets.

Question 11

The ethmoid bone is

Answer 11

Light, spongy bone located at the roof and sides of the nose.
Here, it separates that nasal cavity from the brain, and it also forms a portion of each orbit.

Question 12

What is an orbit in the ethmoid bone?

Answer 12

An orbit is the bony socket that surrounds and protects each eyeball.

Question 13

The auditory ossicles are the three tiny bones located in the middle of the ear, which are known as:

Answer 13

Malleus, incus, and stapes

Question 14

Some of the facial bones contain air-filled cavities known as: ________
What is their purpose^?

Answer 14

Sinuses
Among the purposes of these sinuses is to lighten the weight of the skull

Question 15

The two nasal bones form

Answer 15

The upper part of the bridge of the nose.

Question 16

The two zygomatic bones, also known as the ______

Answer 16

Cheekbones, articulate with the frontal bone that makes up the forehead.

Question 17

The two maxillary bones(singular, maxilla) form most of the:
These bones are also known as the _________.

Answer 17

Upper jaw, maxillae.

Question 18

The two palatine bones form the anterior part of the

Answer 18

Hard palate of the mouth and the floor of the nose.

Question 19

The two lacrimal bones make up

Answer 19

Part of the orbit (socket of the eye) at he inner angle.
*lacrima means tears in Latin

Question 20

The two inferior conchae are the

Answer 20

Thin, scroll-like bones that form part of the interior of the nose (singular, concha).

Question 21

The vomer bone forms

Answer 21

The base for the nasal septum

Question 22

What is the nasal septum

Answer 22

The cartilage wall that divides the two nasal cavities.

Question 23

The mandible, also known as the

Answer 23

Jawbone

Question 24

The mandible is the only movable bone of the skull (T/F)

Answer 24

T

Question 25

The mandible is attached to the skull at the ________________ ________, which is commonly known as ______.

Answer 25

temporomandibular joint, TMJ.