Cranium Anatomy

Question 1

How many bones does the “cranium” have and what are their purpose?

Answer 1

there is 8 bones that PROTECT and surround the brain.

Question 2

What is the spongy bone between the inner and outer layer of bone in the cranium?

Answer 2

Diploe

Question 3

What part of the cranium houses the frontal lobes of the cerebellum and the olfactory bulbs?

Answer 3

the anterior cranial fossa (hint hint : FRONTAL lobe)

Question 4

What is another word for the middle cranial fossa?

Answer 4

the temporal fossa

Question 5

What part of the cranium houses the cerebellum, brainstem, pons, medulla oblongata, midbrain and cranial nerves?

Answer 5

the posterior cranial fossa

Question 6

What part of the brain houses the pituitary gland, hypothalamus and the temporal lobes of the brain, internal carotid artery?

Answer 6

The middle cranial fossa

Question 7

Where is the occipital bone adjacent to?

Answer 7

anterior to the cerebellum.

Question 8

The parietal bones articulate with the frontal, occipital and temporal.

True or False

Answer 8

True

Question 9

How many parietal bones are there in the cranium?

Answer 9

2

Question 10

Where are the parietal bones located?

Answer 10

each side of cranium

Question 11

The frontal bone as a vertical AND horizontal portion.

True or False

Answer 11

True

Question 12

The vertical portion of the frontal bone is called?

Answer 12

squamous portion

Question 13

The vertical portion of the frontal bone forms what facial part?

Answer 13

the forehead and frontal sinuses

Question 14

The glabella is located in which part of the cranium?

Answer 14

in the frontal cranium

Question 15

The supraciliary arches are joined together in the vertical portion of the frontal cranium at what location?

Answer 15

glabella

Question 16

The horizontal plate of the frontal bone forms the roof over each orbital plate

Answer 16

True

Question 17

the cribriform plate of the ethmoid bone is joined at the ______ notch?

ethmoid or supraorbital notch

Answer 17

ethmoid

Question 18

The passage way of the supraorbital nerve is called the ______ or _____ notch

Answer 18

Foramen or supraorbital

Question 19

What is the smallest bone in the cranium?

Answer 19

the ethmoid bone

Question 20

the ethmoid bone is located in the posterior cranium fossa.

True or False

Answer 20

FALSE its located in the anterior fossa.

Question 21

The ethmoid bone is cube shaped and made up of two masses called labryniths and a vertical/horizontal portion.

True or False

Answer 21

TRUE

Question 22

What is the butterfly shaped bone in the cranium called?

Answer 22

the sphenoid

has 2 big wings and 2 small wings) :

Question 23

The pituitary gland is located in the sphenoid portion of cranium.

Answer 23

True

Question 24

How many temporal lobes are there in the cranium?

Answer 24

2

Question 25

The _____ bones form part of the sides and base of cranium.

Answer 25

temporal bones

Question 26

How many parts are there to the temporal bone? and what are they

Answer 26

4 Squamous, tympanic, mastoid, petrous

Question 27

What part of the ear is responsible for "hearing"

Answer 27

the cochlea

Question 28

The cochlea lies in the internal auditory canal True or false

Answer 28

True

Question 29

Explain how the cochlea works in order for us to listen

Answer 29

In the cochlea there is a round window that allows the fluid from the inner ear to move around in order to hear sound waves.

Question 30

Inner ear/bony labyrinth has the vestibule and semicircular canals which control balance and equilibrium True or False

Answer 30

True

Question 31

What is the largest facial bone ?

Answer 31

the mandible

Question 32

What is the only movable bone inthe skull?

Answer 32

the mandible

Question 33

What is the inferior tip of the mandible called?

Answer 33

the chin or "mentum"

Question 34

In pertains to muscles of mastication Which muscle "keeps your chin up" or raises the mandible?

Answer 34

the temporalis muscle

Question 35

In pertains to muscles of mastication Which muscle is the strongest muscle of the jaw?

Answer 35

the masseter

Question 36

In pertains to muscles of mastication Which muscle "closes your jaw"?

Answer 36

The medial pterygoid muscle

Question 37

In pertains to muscles of mastication Which muscle opens the jaw and allows you to move the mandible from side to side

Answer 37

the lateral pterygoid muscle

Question 38

What is the widest portion of the orbits called?

Answer 38

the base (located anteriorly)

Question 39

the optic nerve is the nerve of _____.

Answer 39

sight