Chapter 7 Bones, Part 1: The Axial Skeleton
Order by
95 terms
Terms | Definitions |
|---|---|
 206 | How many bones are in the human body? |
| Bones, Cartilages, Joints or Articulations, Ligaments | The skeleton consists of... (4 different things) |
| ligaments | connect 2 bones |
| joints or articulations | junctions between skeletal elements |
| Axial and Appendicular skeleton | The skeleton is divided in to these two systems... |
| axial skeleton | forms long axis the body |
| skull, vertebral column, and thoracic cage | the axial skeleton consists of these three groups of bones... |
| Appendicular Skeleton | This system is the appendages of the body |
| upper limbs (arms), pectoral girdle (shoulder), lower limbs (legs), and pelvic girdle | The appendicular skeleton consists of... |
| cranial and facial bones | The skull consists of... |
| cranium | encloses the cranial cavity, which supports and protects the brain |
| cranial bones | These serve as attachment sites for some head and neck muscles |
| Anterior | Facial bones are the __________ aspect of the skull |
| facial bones | forms framework of the face, forms cavities for sense organs of sight, taste and smell, provides openings for passage of air and food, hold the teeth, and anchor the muscles of the face |
| sutures | interlocking, immovable joints |
| flat; sutures | Most skull bones are _______ and united by _______. |
| cranial "cavity" | This houses the brain |
| middle and inner ear, nasal cavity, orbits and sinuses | Smaller cavities in the cranium house which 5 structures? |
| foramina, canals, and fissures | 3 different kinds of openings in the cranium |
| spinal cord, blood vessels, twelve cranial nerves: I-XII | Openings in the cranium are for these structures... |
| frontal bone | cranial bone the forms the forehead and roof of orbits |
| parietal bones (paired) | cranial bones that form the superior and lateral skull |
| occipital bone | cranial bone that forms the back of the head and foramen magnum |
| temporal bones (paired) | cranial bones that form the temples |
| sphenoid bone | cranial bone that spans base of cranial floor and batwings |
| ethmoid bone | cranial bone that is between nasal cavity and orbits |
| 6 bones of the cranium | sphenoid, occipital, temporal, parietal, frontal, ethmoid bone(s) |
| irregular, sawtooth | appearance of sutures on the skull |
| coronal, sagittal, squamous, and lambdoid | Four largest sutures of the skull |
| coronal suture | Suture where parietal bone meets frontal bone. |
| Sagittal Suture | Suture where left and right parietal bones meet. |
| Squamous Suture | Suture where parietal and temporal bones meet. |
| Lambdoid | Suture where parietal and occipital bones meet. |
| Sutures | These are where bones articulate with parietal bones. |
| Vault | also called "calvaria" or skull cap; this forms superior, lateral, and posterior aspects of the skull and forehead |
| Base or floor | inferior part of cranium |
| cranial base | Prominent bony ridges divides the... |
| Anterior, Middle, and Posterior | The three "fossae" (steps) of the cranium. |
| four | how many different regions does the temporal bone have? |
| Sphenoid Bone | spans the width of the cranial floor |
| Central Body, Greater Wings, Lesser Wings, Pterygoid | Four parts of the Sphenoid bone. |
| optic canal, superior orbital fissure, foramen rotundum and foramen ovale, foramen spinosum | The five openings in the sphenoid bone. |
| Superior orbital fissure | Opening in the sphenoid bone that allows cranial nerves for eye movement to pass through. |
| foramen rotudum and foramen ovale | Opening in the sphenoid bone that allows cranial nerves for maxillary and mandibular nerves to pass through. |
| Foramen Spinosum | Opening in sphenoid bone that allows the menigeal artery for the parietal and temporal bones to pass through |
| Ethmoid bone | The thin walled and delicate bone that is deeply located. It forms the medial bony area between nasal cavity and orbits. |
| cristi gali | This structure separates the 2 cribiform plates |
| cribiform plates | Part of the ethmoid bone that is sieve-like. It secures the brain to the cranial cavity. |
| Ethmoid Sinuses and Nasal Conchae | These are structures of the ethmoid bone and form the nasal cavities. |
| orbital plate | This is the medial wall of orbits that is a part of the ethmoid bone |
| facial bones | These 8 bones are collectively called __________: mandible, maxillae, zygomatics, nasal, lacrimal, palatines, vomer, and inferior nasal conchae |
| mandible | The lower jaw bone; also the largest and strongest bone in the face. |
| maxillae (paired) | The upper jaw bone and central part of facial skeleton. |
| zygomatics (paired) | The cheek bones. |
| nasal (paired) | The bone that forms the bridge of the nose. |
| Lacrimal (paired) | This bone has a fossa that contains the lacrimal sac. |
| Palatines (paired) | These bones form the hard palate. |
| Vomer | The bone forms the inferior part of the nasal septum. |
| Horizontal Body of Mandible | The jawline of the mandible that anchors lower teeth. |
| Alveoli Margin | Tooth sockets on the mandible are also called.... |
| mental protuberance | Part of the mandible that is the chin. |
| coronoid process | where the temporalis muscle attaches to the mandible |
| mandibular condyle | This part of the mandible is attached to the temporal bone. |
| Coronoid process, mandibular condyle, and mandibular notch | Name the attachment site of the mandible (3). |
| mandible | The maxilla articulates with all other bones in the face, except the ___________. |
| palatine process | This process articulates with the anterior region of the hard palate (the bony roof of the mouth) |
| frontal processes | These processes articulate with the bridge of the nose. |
| Maxillary sinuses | These sinuses articulate with the paranasal sinuses |
| Zygomatic processes | This process articulates with the zygomatic bone |
| Inferior orbital fissure | This fissure articulates with the floor of orbit. |
| Alveoli Margin | This part of the mandible articulates with the teeth. |
| bone and cartilage | The nasal cavity is constructed of bone and cartilage. |
| Ethmoid's cribiform plate | This makes up the roof of the nasal cavity. |
| Floor of nasal cavity/roof of mouth/hard palate | The palatine processes of the maxillae and horizontal plates of palatine bones make up the ______________. |
| meatus | means "passage"... example: the grooves formed by the chonche |
| chonchae | Swirling air through the _________ heats and moistens air; also, mucus filters through this. |
| orbits | Cone-shaped bony cavities; These hold the eyes, muscles that move the eye, some fat and tear-producing glands, and the optic canal. |
| optic canal | The optic nerve passes through the ____________. |
| 7 | How many bones form the orbit of the eye? |
| Sinuses | Air-filled sacs in the bones |
| Paranasal sinuses | Sinuses that cluster around and connect to the nasal cavity at meatus inferior. |
| paranasal sinuses | These sinuses are extensions of the nasal cavity and are lined by same mucous membrane and have same function. |
| hyoid bone | This is the U-shaped bone that does not articulate with any other bone. |
| inferior | The hyoid bone lies _______ to the mandible. |
| greater horn, lesser horn, and body | Name the 3 parts that form the hyoid bone. |
| Hyoid bone | This is a movable base for the tongue and a point of attachment for the neck muscles that raise and lower the larynx during swallowing. |
| skull to pelvis | The vertebral column extends from the _____ to the _______. |
| lower limbs | The vertebral column transmits weight of truck to ______ ________. |
| vertebral column | This is a curved and flexible structure that protects the spinal cord. |
| vertebral column | The ribs and muscles of the neck and back attach to the __________ ________. |
| 33 | How many separate bones or vertebrae does a fetus or infant have? |
| 24 (26 in all) | How many vertebrae bones does an adult have? excluding the sacrum and coccyx |
| sacrum and coccyx | The 9 extra vertebrae in infants fuse together to form the ______ and _______. |
| increase | As vertebrae go down, the bones _______ in size. |
| concave | cervical and lumbar curvatures are ______. |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.