Exam# 2 Chapters 7 & 8 Flashcards
-an organ made up of several tissues
bone
-bone, cartilage, dense connective, epithelium, adipose tissue, and nervous tissue, are the tissues associated with _____
bone
-the entire framework of bones and their cartilages
skeletal system
-bones, muscles, and joints form an integrated system called the _____
musculoskeletal system
-branch of medical science concerned with the prevention or correction of disorders of the musculoskeletal system is called ____
orthopedics
-bone of the adult skeleton are grouped into two particular divisions the ____ and ____
axial skeleton and appendicular skeleton
-the bones of the _____ consists of:
- skull
- hyoid bone
- auditory ossicles
- vertebral column
- thorax
axial skeleton
-the bones of the ____ consists of:
- pectoral girdles
- upper limbs
- pelvic girdle
- lower limbs
appendicular skeleton
-the skull consists of:
cranium
face
-the thorax consist of:
sternum
ribs
-the pectoral girdles consist of:
clavicle
scapula
-the upper limbs consist of:
humerus ulna radius carpals metacarpals phalanges
-the pelvic girdle consist of:
hip
pelvic or coxal bone
-the lower limbs consist of:
femur patella fibula tibia tarsals metatarsals phalanges
- bones that are slightly curved and mostly compact bone tissue
- strong bones
- Ex: femur, fibula, tibia, humerous
long bones
- bones that are mostly spongy
- cubed shaped and nearly equal in length and width
- Ex: carpals and tarsals
short bones
- parallel plates of compact bone
- for protection
- Ex: cranial bones, sternum, scapula
flat bones
- bones that are complex in shape
- Ex: vertebrae, hip bones
irregular bones
- bone shaped like sesame seed
- develop in tendons with friction
- located in the knee, hands. talus of foot
sesamoid bone
-sites allowing the passage of soft tissue (nerves, blood vessels, ligaments, and tendons) or formation of joints
depressions and openings
-narrow slit between adjacent parts of bones through which blood vessels or nerve pass
fissure
-opening through which blood vessels, nerves, or ligaments pass
foramen
-shallow depressions
fossa
-furrow along bone surface that accommodates blood vessels, nerve, or tendons
sulcus
-tubelike openings
meatus
-projections or outgrowths of bone that form joints or attach points for connective tissue, such as ligaments and tendons
processes
-large, round protuberance with a smooth articular surface at the end of bone
condyle
-smooth, flat, slightly concave or convex articular surface
facet
-usually rounded articular projection supported on neck of bone
head
-prominent ridge or elongated projections
crest
-typically roughened projection above condyle
epicondyle
-long, narrow ridge or border
line
-sharp, slender projection
spinous process
-very large projection
trochanter
-variably sized rounded projection
tubercle
-variably sized projection that has a rough bumpy surface
tuberosity
-bony framework of the head
skull
-form the cranial cavity, which encloses and protects the brain
cranial bones
-bones that form the face
facial bones
-bone that forms the forehead
frontal bone
-form the greater portion of the sides and roof of the cranial cavity
parietal bones
-form the inferior lateral aspect of the cranium and part of the cranial floor
temporal bones
-projecting from the inferior portion of the temporal squama is the _____
zygomatic process
- directs sound waves into the ear
- also called the ear canal
external auditory meatus
-rounded projection of the mastoid portion of the temporal bone posterior and inferior to the external auditory meatus
mastoid process
-projects inferior from inferior surface of the temporal bone and serves as a point of attachment for muscles and ligaments of the tongue and neck
styloid process
- the frontal
- parietal
- temporal
- occipital
- sphenoid
- ethmoid bones are bones of the _____
cranial
-the nasal bones
-maxillae
zygomatic bones
-lacrimal bones
-palatine bones
inferior nasal conchae
-mandible
-vomer make up the _____
facial bones
-forms the posterior part and most of the cranium
occipital bone
- the inferior part of the occipital bone
- the medulla oblongata connects with the spinal cord connects here
- vertebral and spinal arteries pass through
foramen magnum
- lies at the middle part of the base of the skull
- called the keystone of the cranial floor b/c it articulates with all other cranial bones
- resembles are butterfly
sphenoid bone
- bony saddle-shaped structure on the superior surface of the body of the sphenoid
- in center of sphenoid
sella turcica
- delicate bone located in anterior part of the cranial floor
- spongelike appearance
ethmoid bone
-partition that divides the nasal cavity into right and left sides
nasal septum
-of the ethmoid bones lies in the anterior floor of the cranium and forms the roof of the nasal cavity
cribriform plate
-projecting superiorly from the cribriform plate is a triangular process called ____
crista galli
-small, flattened, rectangular-shaped bones that form the bridge of the nose
nasal bones
- thin and roughly resemble a fingernail in size and shape
- smallest bones of the facelacrimal
lacrimal bones
-L-shaped bones that form the posterior portion of the hard palate
palatine bones
- scroll-like bones
- increase the surface area of the nasal cavity and help swirl and filter air before it passes into the lungs
inferior nasal conchae
- roughly triangular bone on the floor of the nasal cavity
- it forms the inferior portion of the bony nasal septum
vomer
- unite to form the upper jawbone
- articulates with every bone of the face except the mandible
maxillae
-the bony roof of the mouth
hard palate
- opening in the maxilla
- allows passage of the infraorbital blood vessels and nerve
infraorbital foramen
- lower jawbone
- largest, strongest facial bone
- the only movable skull bone
mandible
- inferior to the second premolar
- spot where dentist injects anesthisia
mental foramen
- immovable joint that holds most skull bones together in adults
- in infants, they are often movable and function as growth centers
suture
-suture that unites the frontal bone and both parietal bones
coronal sutures
- suture that unites the parietal bones on the superior midline
- in infants, resembles an arrow
sagittal suture
-suture unites the two parietal bones to the occipital bone
lambdoid suture
-flat suture, unites the parietal and temporal bones on the lateral aspects of the skull
squamous sutures
- incomplete cranial bones
- areas where unossified mesenchyme develops into dense connective tissues of the skull
- commonly called” soft spots”
frontanels
- largest frontanel, shaped like a diamond
- unpaired
anterior frontanel
- located at the midline among two parietal bones and occipital bone
- unpaired
posterior frontanel
- irregular in shape
- located laterally among the frontal, parietal, temporal, and sphenoid bones
- paired
anterolateral frontanel
- irregularly shaped
- located among the parietal, occipital, and temperal bones
posterolateral frontanel
- U shaped bone
- does not articulate with any other bone
- supports the tongue, provides attachment sites for muscles of the tongue, neck, and pharynx
hyoid bone
- composed of a series of bones vertebrae
- consists of the bone and connective tissue, the spinal cord
- movable
- also called the spine, backbone, or spinal column
vertebral column
- the 7 bones in the neck region
- movable
cervical vertebrae
- the 12 bones posterior to the thoracic cavity
- movable
thoracic vertebrae
- the 5 bones supporting the lower back
- movable
lumbar vertebrae
- 1 bone, consisting of five fused sacral vertebrae
- do not move
sacrum
- 1 bone, usually consisting of four coccgeal vertebrae
- do not move
coccyx
- the ____ and ____ are convex curves (bulging out)
- the ____ and ____ are concave curves (cupping in)
cervical and lumbar
thoracic and sacral
- a _____ has one curve
- an _____ has four curves
fetus
adult
-secondary curve, formed by 7 vertebrae
cervical curve
-primary curve, formed by 12 thoracic vertebrae
thoracic curve
-secondary curve, formed by 5 lumbar vertebrae
lumbar curve
-primary curve, formed by 5 fused sacral vertebrae
sacral curve
-formed by the overlapping of two bones
intervertebal disc
-found between the bodies of adjacent vertebrae from second cervical vertebrae to the sacrum
intervertebral disc
-the thick, disc-shaped anterior portion, is the weight
bearing part of a vertebrae
vertebral body
- formed by the pedicles and flat laminae
- extends posteriorly from the body of the vertebrae
vertebral arch
- smaller than other vertebrae
- has 3 foramina called vertebral foramen and and 2 transverse foramina
cervical vertebrae
- the first cervical vertebrae inferior to the skull
- a ring of bone with anterior and posterior arches and large lateral masses
- allows the head to say “yes”
atlas
- the second cervical vertebrae
- has a peglike process called the ____, which makes a pivot on which the atlas and head rotate
- allows the head to say “no”
axis
- larger and stronger then the cervical vertebrae
- articulates with the ribs
- has articular surfaces called facets or demifacets
thoracic vertebrae
-the largest and strongest of the unfused bones in the vertebral column b/c of the amount of body weight supported
lumbar vertebrae
- triangular bone formed by the union of five sacral vertebrae
- serves as a strong foundation for the pelvic girdle
- in females its shorter and wider
sacrum
- triangular in shape
- in females it points inferiorly to allow the passage for a baby
- in males it points anteriorly
coccyx
-is a bony enclosure formed by the sternum. ribs, and their costal cartilages, and the bodies of the thoracic vertebrae
thoracic cage
-breastbone, is a flat narrow bone located in the center of the anterior thoracic wall
sternum
-parts of the sternum
- the superior part is the ____
- the middle and largest part is the ____
- the smallest part is the ____, this can be fractured during CPR
manubrium
body
xiphoid process
-12 pairs of bones that gives structural support to the sides of the thoracic cavity
ribs
- 1 to 7 pairs if ribs have a direct anterior attachment to the sternum by a strip of hyaline cartilage called ____
- can prevent fracturing of the ribs and sternum
costal cartilage
- spaces between ribs are called ____
- are occupied by muscle, blood vessels and nerves
- allows surgical access to the lungs and other structures in thoracic cavity
intercostal spaces
- ribs 1 to 7 are the ____
- ribs 8 to 12 are the ____
- ribs 11 and 12 are the ____
true ribs
false ribs
floating ribs
- the ____ attach the bones of the upper limb to the axial skeleton
- it consist of the ____ and ____
pectoral girdles
clavicle and scapula
-the ____ is the anterior bone of the pectoral girdle, and the ____ is the posterior bone
clavicle
scapula
-the ____ unite anteriorly at the ____ and posteriorly at the sacrum to form the ____
hip bones
pubic symphysis
bony pelvis
-the ____ is the anterior and inferior part of the hip bone
pubis
- the joint between the two pubes of the hip bones
- consist of fibrocartilage
pubic symphysis
- the _____ pelvis is wider and shallower
- to accommodate the infants head at childbirth
females
- the axial skeleton has _____ bones
- the appendicular skeleton has ____ bones
- the entire skeleton has ____ bones
80 axial
126 appendicular
206 entire skeleton
The size, weight, and width of the ____ pelvis is the difference then in ____
females
males
- a ridge on the posterior side of the femur which muscles attach to
Línea aspera
-the epiphyseal plate becomes the _____ , it’s an example of _____
- epiphyseal line
- syntosis
-the purpose of the curves in the spine is to _____
bare weight
-trabeculae are formed on the _____
stressline
- when the cartilage model grows in thickness due to more extracellular matrix
- it’s accompanied by new chondroblast
- the medullary canal widens
appositional growth