axial skeleton (4) Flashcards

skull and associated bones

1
Q

the axial has a total of ______ bones (give a number)

A

80 bones in the axial skeleton

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2
Q

what are the 3 categories of the axial skeleton? How many bones in each?

A

skull and associated bones (29 bones)

thoracic cage (25 bones)

vertrebal column (26 bones)

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3
Q

how many bones are in the skull and associated category ?

A

29 bones

skull (22 bones)
cranium (8)
face (14)

associated (7 bones)
auditory ossicles (6)
hyoid (1)

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4
Q

how many bones are in the thoracic cage?

A

25 bones

sternum (1)

ribs (24)

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5
Q

how many bones are in the vertebral column?

A

26 bones

vertebrae (24)

sacrum (1)

coccyx (1)

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6
Q

what are the functions of the axial skeleton?

A

supports and protects body and its organs

serves as an attachment point for muscles
(helps position axial skeleton, posture, movement)

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7
Q

what is the acronym to remember the 14 bones in the face?

A

“virgil can not make my pet zebra laugh”

Vomer
nasal Conchae
Nasal bones
Mandible
Maxillae
Palatine bones
Zygomatic bones
Lacrimal bones

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8
Q

what are the ____ (a number) bones in the face?

A

14 bones in the face

maxillae (2)

palatine bones (2)

nasal bones (2)

inferior nasal conchae (2)

zygomatic bones (2)

lacrimal bones (2)

vomer (1)

mandible (1)

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9
Q

what does the maxillae make up? what articulates with it?

A

the upper jaw / anterior portion of roof of the mouth

the upper teeth articulate with the maxillae

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10
Q

the palatine bones make up ____________

A

the hard palate (roof of the mouth mostly made out of palatine bones)

posterior portion of the head

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11
Q

nasal bones are the _______

A

hard ridge of the nose that connects to the face

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12
Q

nasal conchae is _______

A

inside the nasal cavity to make up the wall of the nasal cavity

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13
Q

zygomatic bones make up the __________

A

anterior portion of the cheek bones

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14
Q

lacrimal bones make up the ____________

A

medial portion of the ocular orbit (eye socket)

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15
Q

the vomer sits _______ and articulates with _________. It is located deep within the ________. It protrudes past the zygomatic bone.

A

midsaggitally

articulates with the sphenoid and the ethmoid bones of the cranium. also maxillae and palatine bones.

deep within the skull

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16
Q

the mandible is the _____

A

lower jaw

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17
Q

the cranium has total of ___ bones. it is made up of these bones:

A

8 total bones

occipital bone (1)

parietal bones (2)

frontal bone (1)

temporal bones (2)

sphenoid (1)

ethmoid (1)

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18
Q

what is the acronym to remember the cranial bones ?

A

“old people from tennessee eat spaghetti”

Occipital
Parietal
Frontal
Temporal
Ethmoid
Sphenoid

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19
Q

occipital bone sits ________ and slightly ______

A

posteriorly

slightly inferiorly

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20
Q

the parietal bones sit at ____________

A

the top, back of the head

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21
Q

the frontal bone is at the __________ region

A

forehead region

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22
Q

the temporal bones are the _______ area. they sit more ________.

A

auditory

laterally

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23
Q

the associated bones include the ______ and ______ bones. include name and number of bones in each.

A

hyoid (1)

auditory ossicles (6)

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24
Q

the hyoid bone is deep within the ______________ region. It is sorta free-floating

A

deep within the neck region

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25
the hyoid bone articulates with......
trick question. the hyoid bone does not articulate with other bones. instead is has ligaments and muscles that attach.
26
the auditory ossicles are enclosed in _____ bones. it is important for auditory processes.
temporal bones
27
the 3 structures inside the auditory ossicles are _______________________. they help transmit sounds from ____________________.
malleus incus stapes they help transmit sounds from air to the fluid-filled labyrinth of the inner ear.
28
the sagittal sutures sit between _________ bones
the left and right parietal bones
29
the lambdoid suture sit superior to ____________ and are between that bone and _______ bones
occipital bone parietal bones
30
the coronal suture sits posterior to the ___________ and separates ______ from _______
frontal bone separates parietal bones from frontal bone
31
temporal bones have two processes called __________. What do these two processes serves as ?
mastoid process styloid process they serve as attachment points for muscles
32
the occipital bone has these two prominent structures:
occipital condyle external occipital protuberance
33
which bone(s) is most superior? which is most posterior?
front bone is most superior occipital bone is most posterior
34
what joint do you classify the major sutures of the skull?
they are synarthrotic joints
35
the spinal cord runs through here to meet the brain
foramen magnum
36
zygomatic arch is ________. It also has the zygomatic process of the ________
cheek bones zygomatic process of the temporal bone
37
sphenoid makes up the __________
posterior wall of the eye socket
38
superior nasal conchae is found in the ________
lateral aspect of the nasal opening
39
the bony nasal septum sits midsagittaly and it made up of _________________
perpendicular plate of hard palate/ethmoid bone
40
the ethmoid bone inside the bondy nasal septum articulates with ________
vomer (which is inferiorly situated)
41
squamous suture
between temporal and parietal bones
42
external acoustic meatus is _______________
an opening for auditory canal
43
the mastoid and styloid processes are ____________________________
important attachment points off temporal bone for muscles and tendons
44
the ethmoid bone makes up the ______________
medial wall of the eye socket
45
the brain sits in the __________ bone
occipital bone
46
the frontal sinus is a hole in the ___________ (it is another sinus that we have)
anterior part of the skull
47
the ethmoid bone has two parts called:
crista galli cribriform plate
48
crista galli is in the _________ bone and it is ________
ethmoid bone above the cribriform plate
49
the cribriform plate is a part with _______ that articulates with the _____________
holes articulates with the ethmoidal part of the frontal bone
50
the foramen lacreum is a hole for ______________ to pass through. it is created by the juncture of ________________________
carotid artery created by the junctions of the temporal bone, occipital bone, and sphenoid bones
51
the sphenoid bone has a structure that is saddle-shaped. what is that structure?
Sella Turcica
52
the sella turcica is in the ________ bone and serves as a saddle shaped depression in that bone. This is where the _________ gland sits.
sphenoid bone pituitary gland
53
the foramen ovale has _______ passing through here
nerves
54
the foramen spinosum is a smaller hole, inferior to the __________ that has ______ running through here. It is a neurosurgical landmark.
foramen ovale blood vessels and nerves
55
the ethmoid bone is a _________ bone that has thin cavities called ________ to create one of our sinuses.
pneumatized ethmoidal cells
56
the inferior nasal conchae is attached to the ________-
wall of the nasal cavity and is on each side of the nasal septum
57
the zygomatic fascial foramen is a little opening for ___________
vessels and nerves
58
the lacrimal groove leads to the ____________
nasolacrimal canal
59
the mandible articulates with the ______ at the _______ joint
temporal bone sliding hinge joint
60
to allow the mandible to protract/retract, it uses the __________ joint
temporomandibular joint (tmj)
61
the tmj in the mandible has the sliding hinge joint to allow for _________
depression/elevation (chewing)
62
how many tmj's do we have? 1? 2? 3? etc. what makes the tmj unique compared to other joints?
two tmj's on either side on the mandible. it is very unique because one tmj will not open by itself.
62
what body part/structure helps the tmj move/dictate the tmj's movement?
the teeth it affects the bite and relationship between the maxillae and the jaw.
63
what do orbits do in ocular orbits?
protect the eyes
64
where are ocular orbits found?
front bone (roof of the orbit) maxillae bone (floor of the orbit) lacrimal and ethmoid (medial wall of orbit) sphenoid (posterior wall of orbit) zygomatic bone (lateral wall of orbit)
65
What does the front bone form for the ocular orbit?
the roof of the orbit
66
what does the maxillae bone form for the ocular orbit?
the floor of the orbit
67
what does the lacrimal and ethmoid bone form for the ocular orbit?
the medial wall of the orbit
68
what does the sphenoid bone form in the ocular orbit?
the posterior wall of the orbit
69
what does the zygomatic bone form in the ocular orbit?
the lateral wall of the orbit
70
what (apart from bones) other structures are the ocular orbits found in?
lacrimal glands (produces tear) adipose tissue (fatty tissue) muscles that move the eye blood vessels/nerves
71
the lacrimal glands produce _________ because they ________ to keep _________.
produce tears wash over the eyes keep eyes moist and flush things away
72
the tears in the lacrimal glands drain into the ______________, which joins with the ____________.
nasal lacrimal canal nasal passage
73
most anteriorly in the nasal complex:
nostrils soft tissues posterior nasal apertures nasal septum (vomer + ethmoid) lateral walls made up of nasal concahe
74
the nasal conchae has a _____________ textured structure
curved, shelly textured structures
75
how is the nasal conchae formed? why does it have that curved, shelly textured structure?
formed that way because as air is inhaled, it moves through the nasal conchae to create a turbinate flow.
76
what is turbinate flow?
it is a process in which the nasal conchae does in order to warm the air before it enters the body
77
types of paranasal sinuses:
ethmoidal air cell sinus frontal sinus sphenoidal sinus maxillary sinus
78
what type of sinus is frontal sinus? and where is the frontal sinus located?
frontal sinus is a paranasal sinus the frontal sinus is a hole anterior to the nasal bone in the frontal lobe. they fan out above+medial aspect of the eyebrows
79
what type of sinus is the sphenoidal sinus? and where is the sphenoidal sinus located?
sphenoidal sinus is a paranasal sinus the sphenoidal sinus is a hole posterior to the eyes in the sphenoid. It is behind the ocular orbit. they are deep and posterior in the nasal aperture area and nasal structures
80
what complex/system is the hard palate apart of? and what are the two parts that make up the hard palate?
hard palate is in the nasal complex the hard palate is made up of: anterior bony palate : maxillae posterior of hard palate: horizontal/transverse plate of palatine bone
81
what are paranasal sinuses?
they are air-filled chambers that open into nasal cavity
82
what do paranasal sinuses produce and how do they do it? what does their product do?
paranasal sinuses have tiny glands that produce mucus this mucus will drain into the nasal cavity to keep the air that is inhaled through nasal conchae moist
83
what type of sinus are the ethmoidal air cells and where are they located?
ethmoidal air cells are a type of paranasal sinus they are deep to the nasal bones and ethmoid bonew
84
what type of sinus is the maxillary sinus and where is it located?
the maxillary sinus is a paranasal sinus they are lateral to the nasal structures
85
what is a hyoid bone?
free-floating, no direct articulation, extremely mobile bone
86
there are two components that make up the hyoid bone called ________________. what do these two components do?
consist of Greater and Lesser horns they are a muscle and ligament attachment site
87
what is the hyoid bone suspended by?
styhyloid ligaments
88
what will the hyoid bone attach to?
tongue larynx thyroid cartilage