chpt 7: axial bones and muscles Flashcards
the axial skeleton total bones
80 bones
structures in the axial skeleton
- skull
- vertebral column
- thoracic cage
total bones in the skull
22`
what 2 sets of bones are in the skull
- cranial bones
- facial bones
which set of skull bones has 8 bones
cranial
how many bones are in the facial region
14
which bones are paired in the cranial bones
temporal and parietal
what additional structures does the skull contain:
- individual bones
- number of spaces
- paranasal sinuses
- formina
- bone projections
- sutures
- fontanels
paranasal sinuses location
- frontal bone
- sphenoid bone
- ethmoid bone
- maxillary bone
What skull structure is lined with mucous membranes
paranasal sinuses
function of the mucous membrane
-warms, moistens, filters air
which skull structure lightens the mass of the skull?
paranasal sinuses
what skull structure increases the surface area of nasal mucousa?
paranasal sinuses
what skulll structure serves as echo resonating chambers ?
paranasal sinuses
function of echo resonating chambers
intensify and prolong sound
types of sutures?
- coronal suture
- sagittall suture
- sqaumos suture
- lamboid suture
which suture unities frontal and parietal bones?
coronal suture
which suture unities the two parietal bones?
sagittal suture
where do the 2 parietal bones unite?
top of the skull
which suture unities the parietal and temporal bones
squamous suture
which suture unities the 2 parietal bones with occipital?
lamboid suture
what is fontanels ?
soft spots on babies head
what is fontanel made of?
cartilage x mesenchyme
location of fontanels
- anterior
- posterior
- anterolateral
- posterolateral
what allows flexibility in the fetal skull
fontanels
what allows the skull to change shape in the fetal skull
fontanels
what allows growth of the fetal brain
fontanels
frontal bone location
- cranium / forehead
- nasal cavity
- orbit arches
frontal squama location
forehead
what does the frontal squama descend inferiorly down to form
supraorbital margin
supraorbital margin location
eyebrow area
supraorbital foramen location
supraorbital margin
supraorbital foramen function
suborbital arteries and nerves pass through
function of frontal sinuses
reduce weight of skull
what cranial bone articulates with all cranial bones
spehmoid bone
which cranial bone is the largest + quadrilateral?
parietal bone
quadrilateral meaning
four sided
parietal formina fucntion
nerves + bv pass through
parietal formina location
lateral to sagital suture
which cranial bone has the coronal suture, lamboid suture, and squamous suture uniting with other bones?
parietal bone
what cranial bone has depressions and protrusions that have bv supplying the dura mater?
parietal bone
temporal bone structues
- articular tubercle
- mandibular foss
- zyogmatic process
- temopral process
- the mastoid portion
- the petrous portion
which two temporal bone structures form the tmj?
articular tubercle and mandible fossa
zygomatic fossa adn the temporal fosse unite to form
zygomatic arch
the zygomatic process belongs to
temporal bone
what process belongs to the zygomatic bone
temporal process
mastoid process, auditory meatus, internal auditory meatus, styloid process, and stylomastoid foramen belong to
the mastoid process
which process serves as an attachment point for neck muscles
-mastoid process
the function of the auditory meatus
conduct air into middle ear
which structure of the mastoid portion has openings for facial and vestibulocochlear cranial nerves
internal auditory meatus
styloid process function
-attachment for muscles and ligaments of tongue, neck, and pharynx
what structure of the mastoid portion of the temporal is responsible for the passage for facial and stylomastoid artery
-passage for facial and stylomastoid artery
structures of the petrous portion of the temporal bone
- internal ear
- middle ear
- carotid and juglar formens
location of the petrous portion
-base of skull b/w sphenoid and occipital bone
internal ear function
contains sensory organs for hearing and balance
incus, malleus, stapes are structures of which part of the ear
middle ear
carotid arerty fucntionn
blood to brain
jugular vein function
blood to heart from brain
