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Anatomy Exam 2 Ch 7 : axial skeleton- skull
Terms in this set (46)
Name the bones from the anterior cranial fossa.
The frontal, ethmoid, and sphenoid bones form the anterior cranial fossa
For each feature listed, name the bone that contains the feature: crista galli, mastoid process, nuchal line, sella turcica, supraorbital foramen, zygomatic process.
The crista galli is on the ethmoid bone; the mastoid process is on the temporal bone; the nuchal line is on the occipital bones; the sella turcica is on the sphenoid bones; the supraorbital foramen is on the frontal bone; the zygomatic process is on the temporal bone.
Which four bones articulate with the left parietal bone? Name the sutures that join these bones to the left parietal bone.
The four bones that articulate with the left parietal bone are the right parietal bones via the sagittal suture; the frontal bone via the coronal suture; the left temporal bone via the squamous suture; the occipital bone via the lambdoid suture.
Name all the bones that articulate with the maxilla.
The bones that articulate with the maxilla are the zygomatic, vomer, palatine, nasal, frontal, lacrimal, ethmoid, and inferior nasal concha
Which bones or bony process form the hard palate?
The hard palate is formed from the horizontal plates of the palatine bones and the palatine processes of the maxillae
What are the alveolar processes, and on which bones are they located?
The alveolar processes are the superior margin of the mandible and the inferior margin of the maxillae that contain the teeth in the alveoli (sockets).
Which bones form the nasal conchae? What is the function of these structures?
Nasal conchae are formed from the ethmoid bones (superior and middle) and the inferior nasal conchae. These conchae create turbulence in the incoming air and function to warm, moisten, and filter the air.
Which of the bones that form the orbit are cranial bones? Which are facial bones?
Cranial bones contributing to the orbit are frontal, sphenoid, and ethmoid bones; the facial bones that contribute to the orbit are the lacrimal, maxillary, zygomatic, and palatine bones.
Which paranasal sinuses are located along the lateral walls of the nasal cavity? What type of membrane lines all the paranasal sinuses?
Ethmoidal air cells and maxillary sinuses are located in the lateral walls of the nasal cavity. All sinuses are lined with a mucous membrane.
Which portion of the intervertebral disc expands under compression? Which portion resists twisting forces?
The nucleus pulposus, the inner corner of the intervertebral disc, expands under compression. The outer rings of the fibrocartilage, the anulus fibrosus, function to resists twisting forces.
When and how do the secondary curvatures of the intervertebral column develop?
The cervical curvature develops at 3 months, as the infant begins to hold up his head; the lumbar curvature develops around 1 year, when the baby begins to walk.
Why do intervertebral discs usually herniate in the posterolateral direction.
The anulus fibrosus is thinnest posteriorly, but the posterior longitudinal ligaments prevent direct posterior herniation; thus, most herniations occur in the posterolateral direction.
What does the superior articular process of a vertebrae articulate with?
The superior articular process of the vertebra articulates with the interior articular process of the vertebra just superior.
Name one feature that is unique for all cervical vertebrae?
All the cervical vertebrae have transverse foramina. This is the most distinctive feature.
How can you distinguish thoracic vertebrae T12 from lumbar L1?
Thoracic vertebrae T12 has costal facets on its vertebral body, lumbar vertebrae L1 does not.
What part of the vertebrae form the median sacral crest?
The fused spinous process of the sacral vertebrae form the medial sacral crest
Define the sternal angle. Which rib articulates with the sternum at this landmark?
The sternal angle is the junction between the manubrium and the body of the sternum. Rib 2 articulates here.
What specific features of the thoracic vertebrae articulate with the head of a rib? Where does the tubercle of a rib articulate?
The head of the rub articulates with the superior and inferior costal facets of the thoracic vertebrae. The tubercle of the rib articulates with the transverse costal facet.
Which skull bones form as two individual bones that fuse during childhood to form a single bone in the adult?
The frontal bone and mandible form as two individual bones that fuse during childhood.
Bones connected by the coronal suture
frontal and parietal
keystone bone of the cranium
keystone bone of the face
bones that form the hard palate
maxillary and palatine
bones that contains the foramen magnum
forms the chin
contain paranasal sinuses
ethmoid, frontal, maxillary, and sphenoid
contains mastoid air cells
Herniated intervertebral discs tend to herniate
The parts of the sternum that articulate at the sternal angle are
manubrium and body
The only rib whose shaft is flattened in the horizontal plane, instead of vertically is the
The name of the first cervical vertebra is
no spinous process
superior articular facets
transverse costal facets
kidney shaped body
forked spinous process
cervical vertebrae except C1 and C7
circular vertebral foramen
articular facets directed medially/laterally
external acoustic meatus
Recommended textbook explanations
Introduction to Anatomy and Physiology
Michelle Provost-Craig, Susan J. Hall, William C. Rose
Seeley's Principles of Anatomy and Physiology
Laboratory Manual for Hole's Essentials of Human Anatomy & Physiology
Terry R. Martin
Hole's Essentials of Human Anatomy and Physiology
David N. Shier
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