text
stringlengths
2
2.33k
source
stringclasses
826 values
The vertebrae, ribs, and sternum also develop via endochondral ossification. Mesenchyme accumulates around the notochord and produces hyaline cartilage models of the vertebrae. The notochord largely disappears, but remnants of the notochord contribute to formation of the intervertebral discs. In the thorax region, a po...
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-chapter-review
alveolar process of the mandible : upper border of mandibular body that contains the lower teeth
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
alveolar process of the maxilla : curved, inferior margin of the maxilla that supports and anchors the upper teeth
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
angle of the mandible : rounded corner located at outside margin of the body and ramus junction
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
angle of the rib : portion of rib with greatest curvature; together, the rib angles form the most posterior extent of the thoracic cage
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
anterior (ventral) sacral foramen : one of the series of paired openings located on the anterior (ventral) side of the sacrum
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
anterior arch : anterior portion of the ring-like C1 (atlas) vertebra
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
anterior cranial fossa : shallowest and most anterior cranial fossa of the cranial base that extends from the frontal bone to the lesser wing of the sphenoid bone
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
anterior longitudinal ligament : ligament that runs the length of the vertebral column, uniting the anterior aspects of the vertebral bodies
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
anulus fibrosus : tough, fibrous outer portion of an intervertebral disc, which is strongly anchored to the bodies of the adjacent vertebrae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
appendicular skeleton : all bones of the upper and lower limbs, plus the girdle bones that attach each limb to the axial skeleton
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
articular tubercle : smooth ridge located on the inferior skull, immediately anterior to the mandibular fossa
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
atlas : first cervical (C1) vertebra
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
axial skeleton : central, vertical axis of the body, including the skull, vertebral column, and thoracic cage
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
axis : second cervical (C2) vertebra
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
body of the rib : shaft portion of a rib
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
brain case : portion of the skull that contains and protects the brain, consisting of the eight bones that form the cranial base and rounded upper skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
calvaria : (also, skullcap) rounded top of the skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
carotid canal : zig-zag tunnel providing passage through the base of the skull for the internal carotid artery to the brain; begins anteromedial to the styloid process and terminates in the middle cranial cavity, near the posterior-lateral base of the sella turcica
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
cervical curve : posteriorly concave curvature of the cervical vertebral column region; a secondary curve of the vertebral column
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
cervical vertebrae : seven vertebrae numbered as C1–C7 that are located in the neck region of the vertebral column
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
clavicular notch : paired notches located on the superior-lateral sides of the sternal manubrium, for articulation with the clavicle
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
coccyx : small bone located at inferior end of the adult vertebral column that is formed by the fusion of four coccygeal vertebrae; also referred to as the “tailbone”
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
condylar process of the mandible : thickened upward projection from posterior margin of mandibular ramus
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
condyle : oval-shaped process located at the top of the condylar process of the mandible
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
coronal suture : joint that unites the frontal bone to the right and left parietal bones across the top of the skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
coronoid process of the mandible : flattened upward projection from the anterior margin of the mandibular ramus
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
costal cartilage : hyaline cartilage structure attached to the anterior end of each rib that provides for either direct or indirect attachment of most ribs to the sternum
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
costal facet : site on the lateral sides of a thoracic vertebra for articulation with the head of a rib
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
costal groove : shallow groove along the inferior margin of a rib that provides passage for blood vessels and a nerve
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
cranial cavity : interior space of the skull that houses the brain
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
cranium : skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
cribriform plate : small, flattened areas with numerous small openings, located to either side of the midline in the floor of the anterior cranial fossa; formed by the ethmoid bone
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
crista galli : small upward projection located at the midline in the floor of the anterior cranial fossa; formed by the ethmoid bone
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
dens : bony projection (odontoid process) that extends upward from the body of the C2 (axis) vertebra
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
ear ossicles : three small bones located in the middle ear cavity that serve to transmit sound vibrations to the inner ear
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
ethmoid air cell : one of several small, air-filled spaces located within the lateral sides of the ethmoid bone, between the orbit and upper nasal cavity
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
ethmoid bone : unpaired bone that forms the roof and upper, lateral walls of the nasal cavity, portions of the floor of the anterior cranial fossa and medial wall of orbit, and the upper portion of the nasal septum
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
external acoustic meatus : ear canal opening located on the lateral side of the skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
external occipital protuberance : small bump located at the midline on the posterior skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
facet : small, flattened area on a bone for an articulation (joint) with another bone, or for muscle attachment
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
facial bones : fourteen bones that support the facial structures and form the upper and lower jaws and the hard palate
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
false ribs : vertebrochondral ribs 8–12 whose costal cartilage either attaches indirectly to the sternum via the costal cartilage of the next higher rib or does not attach to the sternum at all
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
floating ribs : vertebral ribs 11–12 that do not attach to the sternum or to the costal cartilage of another rib
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
fontanelle : expanded area of fibrous connective tissue that separates the brain case bones of the skull prior to birth and during the first year after birth
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
foramen lacerum : irregular opening in the base of the skull, located inferior to the exit of carotid canal
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
foramen magnum : large opening in the occipital bone of the skull through which the spinal cord emerges and the vertebral arteries enter the cranium
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
foramen ovale of the middle cranial fossa : oval-shaped opening in the floor of the middle cranial fossa
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
foramen rotundum : round opening in the floor of the middle cranial fossa, located between the superior orbital fissure and foramen ovale
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
foramen spinosum : small opening in the floor of the middle cranial fossa, located lateral to the foramen ovale
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
frontal bone : unpaired bone that forms forehead, roof of orbit, and floor of anterior cranial fossa
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
frontal sinus : air-filled space within the frontal bone; most anterior of the paranasal sinuses
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
glabella : slight depression of frontal bone, located at the midline between the eyebrows
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
greater wings of sphenoid bone : lateral projections of the sphenoid bone that form the anterior wall of the middle cranial fossa and an area of the lateral skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
hard palate : bony structure that forms the roof of the mouth and floor of the nasal cavity, formed by the palatine process of the maxillary bones and the horizontal plate of the palatine bones
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
head of the rib : posterior end of a rib that articulates with the bodies of thoracic vertebrae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
horizontal plate : medial extension from the palatine bone that forms the posterior quarter of the hard palate
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
hyoid bone : small, U-shaped bone located in upper neck that does not contact any other bone
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
hypoglossal canal : paired openings that pass anteriorly from the anterior-lateral margins of the foramen magnum deep to the occipital condyles
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
hypophyseal (pituitary) fossa : shallow depression on top of the sella turcica that houses the pituitary (hypophyseal) gland
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
inferior articular process : bony process that extends downward from the vertebral arch of a vertebra that articulates with the superior articular process of the next lower vertebra
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
inferior nasal concha : one of the paired bones that project from the lateral walls of the nasal cavity to form the largest and most inferior of the nasal conchae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
infraorbital foramen : opening located on anterior skull, below the orbit
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
infratemporal fossa : space on lateral side of skull, below the level of the zygomatic arch and deep (medial) to the ramus of the mandible
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
internal acoustic meatus : opening into petrous ridge, located on the lateral wall of the posterior cranial fossa
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
intervertebral disc : structure located between the bodies of adjacent vertebrae that strongly joins the vertebrae; provides padding, weight bearing ability, and enables vertebral column movements
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
intervertebral foramen : opening located between adjacent vertebrae for exit of a spinal nerve
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
jugular (suprasternal) notch : shallow notch located on superior surface of sternal manubrium
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
jugular foramen : irregularly shaped opening located in the lateral floor of the posterior cranial cavity
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
kyphosis : (also, humpback or hunchback) excessive posterior curvature of the thoracic vertebral column region
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lacrimal bone : paired bones that contribute to the anterior-medial wall of each orbit
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lacrimal fossa : shallow depression in the anterior-medial wall of the orbit, formed by the lacrimal bone that gives rise to the nasolacrimal canal
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lambdoid suture : inverted V-shaped joint that unites the occipital bone to the right and left parietal bones on the posterior skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lamina : portion of the vertebral arch on each vertebra that extends between the transverse and spinous process
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lateral pterygoid plate : paired, flattened bony projections of the sphenoid bone located on the inferior skull, lateral to the medial pterygoid plate
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lateral sacral crest : paired irregular ridges running down the lateral sides of the posterior sacrum that was formed by the fusion of the transverse processes from the five sacral vertebrae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lesser wings of the sphenoid bone : lateral extensions of the sphenoid bone that form the bony lip separating the anterior and middle cranial fossae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
ligamentum flavum : series of short ligaments that unite the lamina of adjacent vertebrae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lingula : small flap of bone located on the inner (medial) surface of mandibular ramus, next to the mandibular foramen
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lordosis : (also, swayback) excessive anterior curvature of the lumbar vertebral column region
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lumbar curve : posteriorly concave curvature of the lumbar vertebral column region; a secondary curve of the vertebral column
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
lumbar vertebrae : five vertebrae numbered as L1–L5 that are located in lumbar region (lower back) of the vertebral column
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mandible : unpaired bone that forms the lower jaw bone; the only moveable bone of the skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mandibular foramen : opening located on the inner (medial) surface of the mandibular ramus
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mandibular fossa : oval depression located on the inferior surface of the skull
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mandibular notch : large U-shaped notch located between the condylar process and coronoid process of the mandible
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
manubrium : expanded, superior portion of the sternum
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mastoid process : large bony prominence on the inferior, lateral skull, just behind the earlobe
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
maxillary bone : (also, maxilla) paired bones that form the upper jaw and anterior portion of the hard palate
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
maxillary sinus : air-filled space located with each maxillary bone; largest of the paranasal sinuses
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
medial pterygoid plate : paired, flattened bony projections of the sphenoid bone located on the inferior skull medial to the lateral pterygoid plate; form the posterior portion of the nasal cavity lateral wall
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
median sacral crest : irregular ridge running down the midline of the posterior sacrum that was formed from the fusion of the spinous processes of the five sacral vertebrae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mental foramen : opening located on the anterior-lateral side of the mandibular body
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mental protuberance : inferior margin of anterior mandible that forms the chin
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
middle cranial fossa : centrally located cranial fossa that extends from the lesser wings of the sphenoid bone to the petrous ridge
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
middle nasal concha : nasal concha formed by the ethmoid bone that is located between the superior and inferior conchae
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
mylohyoid line : bony ridge located along the inner (medial) surface of the mandibular body
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
nasal bone : paired bones that form the base of the nose
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
nasal cavity : opening through skull for passage of air
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms
nasal conchae : curved bony plates that project from the lateral walls of the nasal cavity; include the superior and middle nasal conchae, which are parts of the ethmoid bone, and the independent inferior nasal conchae bone
https://openstax.org/books/anatomy-and-physiology-2e/pages/7-key-terms