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parts of the skull

the skull, vertebral column, the ribs, and the sternum make up what? axial skeleton
is composed of the bones of the arms, legs, pelvic girdle, and shoulder girdle. appendicular skeleton
joints between bones articulations
points of attachment for muscles, joint surfaces, and openings for various blood vessels and nerves to enter and leave the skull. surface markings
a rounded hole foramen
a slit-like hole fissure
tube-like hole meatus
a hollow space cavity or sinus
a ridge crest or line
a groove sulcus
a depression fossa
a joint surface condyle, head, facet
bump tuberosity
is the portion of the skull which houses the brain the cranium
the brain lies within the cranium ( bony "box" framework ) in a chamber known as the? cranial cavity (vault)
is the large bone that forms the forehead region and the upper portion of the orbit frontal bone
the bony eye socket the orbit
directly posterior to the frontal bone are the? parietal bone
these paired bones form the upper central portion of the skull and cranial activity parietal bone
lies directly inferior to the parietal bones and form the sides of the skull and the lower sides and a portion of the floor of the cranial cavity. temporal bones
is a large bump that lies just behind the ear. posterior to the earlobe. mastoid process
is found on the interior of the skull and forms a large "mountain" on the floor of the cranium. houses the structures of the internal ear. petrous ridge
anterior to the mastoid process is a spike-like projection known as the? styloid process
anterior to the mastoid process is a tube-like hole, the? external auditory meatus
this hole is the opening of the tube through which sound waves travel to the interior ear structures. external auditory meatus
is a tiny bony projection that extends anteriorly forming the zygomatic arch when it joins with a similar posterior extension of a bone from the face. zygomatic process
the cheekbone zygomatic arch
is a small opening located in the ridge portion of the temporal bone (viewed from the inside of the skull). internal auditory meatus
are openings which can be viewed from both the inside and the inferior aspect (bottom) of the skull. jugular foramen
provides the opening for the carotid artery to enter into the cranial cavity. carotid canal
forms the posterior wall and a portion of the floor of the cranial cavity. occipital bone
the largest hole in the skull and is found in the occipital bone. the spinal cord exits the cranium through this hole to travel into the vertebral column. foramen magnum
lateral to the foramen magnum are two rounded articular(joint) surfaces occipital condyles
is a large, oddly shaped bone that can best be visualized from inside the cranial cavity or from the inferior aspect of the skull. this bat-shaped bone extends from one temple to the other. sphenoid bone
a prominent landmark that can easily be seen from inside of the cranium is the? also called turkish saddle and is the bone of the pituitary gland. sella turcica
is a rounded tunnel extending from the orbit into the cranial cavity that accommodates the optic nerve as it travels from the eyeball to the brain optic canal
the final bone of the cranial. this bone lies between and forms the medial wall of the orbits. ethmoid bone
forms the superior(upper) portion of the nasal septum, which divides the nasal cavity into left and right parts. perpendicular plate
this ridge, near the front of the cranial cavity, serves as an attachment point for the membranes that surround the brain. crista galli
on either side of the crista galli is a perforated, screen-like structure known as the? the tiny holes in this grid allow the olfactory nerve to enter the brain tissue from the nasal cavity region. cribriform plate
are the upper scroll-like bones on the lateral side of the nasal cavities. middle and superior nasal conchae
the bones of the cranium fuse together during development forming joints known as sutures
in infants, the sutures are imcomplete, containing areas of dense collagenous connective tissue. can be felt as soft spots on the baby's head. fontanels
four main sutures of the cranium on the skulls sagittal, coronal, lambdoid, and squamosal suture
forms the seam between the parietal bone at the midline of the skull sagittal suture
forms the junction between parietal and frontal coronal suture
joins the parietal and occipital bones lambdoid suture
connects the parietal, temporal, and sphenoid bones squamosal suture
forms the anterior portion of the skull facial bones
forms the superior portion of the nasal region, commonly known as the bridge of the nose. nasal bone
is the bone that forms the upper jaw. forms the lower region of the orbit, as well as much of the upper face and lower nasal region. (when fails fusion a cleft palate occurs). maxilla
upper teeth, are anchored into bony sockets of the maxilla maxillary teeth
located just inferior to the orbit infraorbital foramen
inferior to the maxilla is one of the few moveable bones of the skull. forms the upper jaw. mandible
the lower teeth, are anchored into bony sockets of the mandible mandibular teeth
the articulation between the temporal bone and the mandible, lies just anterior to the external auditory meatus. dysfunction of this joint, due to misaligned teeth or teeth grinding/gritting can cause a great deal of pain temporomandibular joint
can be felt about an inch inferior to the earlobe and its part of the mandible that bends in the bone. angle
is the flat portion of the mandible which extends inferiorly from the temporomandibular joint to the angle of the mandible. ramus
lateral to the maxilla. "the cheekbone" attaches to the zygomatic process of the temporal bone to complete the zygomatic arch on the side of the skull. zygomatic bone
the final bone of the orbit is the tiny? lies at the medial aspect of the orbit and has a small opening into the lacrimal duct, which carries the tears from the eye to the nasal area. lacrimal bone
are the most inferior of the scroll-like bones of the lateral nasal area. are formed from a separate bone than the superior/middle conchae. inferior nasal conchae.
just posterior to the maxilla's portion of the palate, are two small bones. these two small bones form the posterior 1/4 of the hard palate. palatine bones
superior to the palatine bones, within the nasal cavity is a small, wedge-shaped bone called? forms the inferior portion of the nasal septum. vomer
Created by: a.quimbaya1