A&P Chapter 8 Concepts
The cranial cavity encloses which of the following?
brain
nasal bone
bridge of nose
The lateral walls of the nasal cavity give rise to scroll-like bones called the nasal _____
conchae
the occipital ____ are smooth processes on either side of the foramen magnum that articulate with the atlas.
condyles
the occipital _____ are smooth processes on either side of the foramen magnum that articulate with the atlas.
condyles
The largest cavity in the skull that encloses the brain is the ____ cavity
cranial
The perforated part of the ethmoid bone that forms the roof of the nasal cavity is called the _____ plate.
cribiform
The perforated part of the ethmoid bone that forms the roof of the nasal cavity is called the ____ plate.
cribriform
sella turcica
depression in the sphenoid bone where the pituitary gland is located
The crista galli is an attachment site for the ______.
dura mater
external auditory meatus
ear canal
palatine bone
either of two irregularly shaped bones that form the back of the hard palate and helps to form the nasal cavity and the floor of the orbits
The ear canal is also called the ______.
external auditory meatus
Which term refers to the spaces located between unfused cranial bones during early development?
fontanelles
The hole at the center of a vertebra is termed the vertebral ____
foramen
Which of the following terms refers to the large hole in the base of the skull that allows the spinal cord to enter the cranial cavity?
foramen magnum
frontal bone
forehead
perpendicular plate
forms superior part of nasal septum
vomer
forms the inferior portion of the nasal septum
The bone indicated in the figure is the ____ bone.
frontal
Which wing of the sphenoid bone forms one half of the middle cranial fossa and a part of the lateral surface of the cranium?
greater wing
The maxilla and palatine bones come together to form which of the following?
hard palate
The palatine bones forms part of the ______.
hard palate
Which term refers to a prominent expanded end of a bone that is sometimes rounded?
head
Which bone is located in the neck and does not articulate with any other bone?
hyoid
Only one of the pairs of nasal conchae is not part of the ethmoid bones. Which one is its own bone?
inferior
The opening between the pedicles of two successive vertebrae that allows for the passage of spinal nerves is a(n) ______ foramen.
intervertebral
Within the vertebral column, a(n) _____ disc is a pad consisting of an inner gelantinous nucleus surrounded by a ring of fibrocartilage.
intervertebral
Name the opening between the superior and inferior vertebral notches of two adjacent vertebrae.
intervertebral foramen
The smallest bones of the skull are the ______ bones.
lacrimal
the ____ bone, located between the maxillary and ethmoid bone, forms part of the medial wall of the orbit.
lacrimal
Which process on the temporal bone provides a site of attachment for muscles of the tongue, pharynx, and hyoid bone?
styloid process
Which nasal conchae has sensory cells of smell?
superior
mandibular fossa
the depression in the temporal bone into which the condyle of the mandible fits
body of the mandible
the horizontal portion of the lower jaw
head
the promin
dura mater
thick, outermost layer of the meninges surrounding and protecting the brain and spinal cord
The indicated part of the vertebrae is the _____ process
transverse
maxilla
upper jaw
The entire region of the axial skeleton indicated by the arrows on the figure is the _____ column
vertebral
The spinal cord passes through the vertebral foramen of each vertebra. Together, the vertebral foramina of the complete vertebral column form which of the following?
vertebral canal
ramus of the mandible
vertical portion of the lower jaw that communicates with the skull
Choose the bone that, along with the ethmoid, forms the nasal septum.
vomer
Which of the following add resonance to the voice and lighten the anterior portion of the skull?
paranasal sinuses
Which wing of the sphenoid bone forms the posterior margin of the anterior cranial fossa?
Lesser wing
Which of following is a true statement and explains why the number of bones varies with age?
Many bones fuse together during development, resulting in fewer bones in the adult.
Which best describes the cribriform plate?
Perforated bone area that forms the roof of the nasal cavity
List the sutures surrounding the parietal bones.
Sagittal Squamous Lambdoid Coronal
body of vertebrae
Solid anterior portion of Vertebrae
The axial skeleton can be defined as which of the following?
The bones of the supporting central axis of the body
The bone indicated in the figure is the______ bone.
parietal
Which cranial bones are paired?
parietal and temporal
Within the nasal septum, the ______ plate is part of the ethmoid bone.
perpendicular
styloid process
pole-like process extending downward from the temporal bone on each side of the skull
mastoid process
round projection on the temporal bone behind the ear
condyle
rounded articular projection
The suture between the parietal bones is the ______ suture.
sagittal
the _____ turcica is a saddle-like prominence in the body of the sphenoid bone that houses the pituitary gland.
sella
lacrimal bone
small fragile bone making up part of the front inner walls of each eye socket and providing room for the passage of the lacrimal ducts
facet
smooth, nearly flat articular surface
fontanelles
soft spots normally present on the skull of a newborn
The foramen magnum is a hole for the passage of which of the following?
spinal cord
Which vertebral process is a projection extending posteriorly from the vertebral arch?
spinous process
How many bones are typically in the adult skeleton?
206
List the paranasal sinuses.
Frontal Maxillary Ethmoid Sphenoid
Which bones form the cranium?
Frontal, parietal, occipital, temporal, ethmoid, sphenoid
parietal bone
a bone forming the central side and upper back part of each side of the skull.
Which part of the maxilla consists of raised portions of bone that lie between the roots of the teeth?
alveolar process
The region of the bone indicated in the figure is the _____ of the mandible.
angle
occipital condyles
articulate with first cervical vertebra
The first cervical vertebra is called the ______.
atlas
The skull, vertebral column, and rib cage comprise the _____ skeleton.
axial
lambdoid suture
between parietal bones and occipital bone
Which of the following is the weight bearing portion of the vertebra?
body
inferior nasal concha
located on each side of the nasal septum, attached to the lateral wall of the nasal cavity; increase epithelial surface area and create turbulence in the inspired air
The region of the spine indicated in the picture is the ____ region
lumbar
The foramen _____ is a large hole where the spinal cord enters the cranium.
magnum
The opening in the occipital bone through which the spinal cord exits the cranial cavity is the foramen
magnum
The lower jaw bone is called the ______.
mandible
The ______ foramen serves as the site of entry into the mandibular body for the nerves and blood vessels that supply the teeth.
mandibular
Which structure articulates with the mandibular fossa of the temporal bone?
mandibular condyle
The mandibular condyle articulates with which part of the temporal bone?
mandibular fossa
Identify the indented region indicated in the figure.
mandibular notch
What is the prominent bony process behind and below the ear that is filled with small air sinuses and serves as an attachment for a major neck muscle?
mastoid process
The _____ bones form the bridge of the nose and support the cartilage that forms the lower portion.
nasal
Name the scroll-like bones that project into the nasal cavity.
nasal conchae
The region of the intervertebral disc identified as 'A' in the figure is the ______, while 'B' is the ______.
nucleus pulposus. anulus fibrosus
which bone forms the back of the skull?
occipital
Where does the skull rest on the vertebral column?
occipital condyles
The cribriform foramina of the cribriform plate are passageways for ______.
olfactory nerves
the ____ processes of the maxillary bones form the anterior 2/3 of the hard palate.
palatine