Ch 7 Flashcards
Bones are composed of:
bone tissue, cartilage, dense connective tissue, blood and nervous tissue
3 functions of bones:
- store inorganic salts
- support and protect soft tissue
- house blood-producing cells
What 5 things are composed of the axial skeleton?
- skull
- middle ear bone
- hyoid bone
- vertebral column
- thoracic cage
What 4 things are composed of the appendicular skeleton?
- pectoral girdle
- upper limbs
- pelvic girdle
- lower limbs
The skull=
cranium + facial skeleton
Cranium:
encloses and protects brain
Facial skeleton:
forms shape of face
What are the 4 major sutures of the cranium?
- coronal
- sagittal
- squamous
- lamboid
(Cranium) Where are 5 places that the frontal bone is located?
- forehead
- roof of nasal cavity
- roofs of orbits
- frontal sinuses
- supraorbital foramen
(Cranium) Where is 1 place the parietal bone is located?
-sides & roof of cranium
(Cranium) What 2 things is the occipital bone composed of?
- foramen magnum
- occipital condyles
(Cranium) What 3 things is the temporal bone composed of?
- external acoustic meatus
- mandibular fossa
- zygomatic arch
(Cranium) What suture is located in the temporal bone?
squamous suture
(Cranium) What 3 processes are in the temporal bone?
mastoid, styloid, zygomatic
(Cranium) What 2 sutures are in the parietal bone?
- sagittal suture
- coronal suture
(Cranium) What suture is in the occipital bone?
-lambdoid suture
(Cranium) Where are 3 places the sphenoid bone is located?
- base of cranium
- sides of skull
- floor & sides of orbits
(Cranium) Where are 2 places the occipital bone is located?
- back of skull
- base of cranium
(Cranium) What 2 things is the sphenoid bone composed of?
- sella turcica
- sphenoid sinuses
(Cranium) What are 4 places the ethmoid bone is located?
- in front of sphenoid
- roof and walls of nasal cavity
- wall of orbits
- floor of cranium
(Cranium) What 2 plates make up the cranium?
- cribriform plates
- perpendicular plate
(Cranium) What 3 things are the ethmoid bone made up of?
- nasal conchae
- ethmoidal air cells
- crista galli
(Cranium) Where are 4 places the maxillae is located?
- upper jaw
- anterior roof of mouth
- floors of orbit
- sides and floor of nasal cavity
(Cranium) What 2 processes are in the maxillae?
- alveolar
- palatine
(Cranium) What 1 thing is the maxillae made of?
maxillary sinuses
(Facial Skeleton) What does the palatine bone look like?
L-shaped
(Facial Skeleton) Where are 2 places the palatine bone is located?
- behind maxilla
- floor and lateral walls of nasal cavity
(Facial Skeleton) Where are 2 places the zygomatic bone is located?
- cheeks
- lateral walls & floor of orbits
(Facial Skeleton) What 1 process is in the zygomatic bone?
temporal
(Facial Skeleton) What 1 thing makes up the zygomatic bone?
zygomatic arch
(Facial Skeleton) Where is the lacrimal bone located?
medial walls of orbits
(Facial Skeleton) What bone is composed from orbit to nasal cavity for tears?
lacrimal bone
(Facial Skeleton) Where is the nasal bone located?
bridge of nose
(Facial Skeleton) Where is the vomer bone located?
midline of nasal cavity
(Facial Skeleton) The vomer bone is the inferior portion of:
nasal septum
(Facial Skeleton) What is the largest of the conchae?
inferior nasal conchae
(Facial Skeleton) What does the inferior nasal conchae look like?
scroll-shaped
(Facial Skeleton) What is the mandible?
lower jawbone
(Facial Skeleton) What does the mandible look like?
horse shoe
(Facial Skeleton) What 2 condyles are in the mandible?
- ramus
- mandibular
(Facial Skeleton) What 2 processes are in the mandible?
- coronoid
- alveolar
(Facial Skeleton) What 2 foramen are in the mandible?
- mental
- mandibular
What is something that infantile skulls have?
fontanels (soft spots)
(Vertebral Column) What does the vertebral column consist a lot of?
vertebrae
(Vertebral Column) How many cervical vertebrae are in the vertebral column?
7
(Vertebral Column) How many thoracic vertebrae are in the vertebral column?
12
(Vertebral Column) How many lumbar vertebrae are in the vertebral column?
5
(Vertebral Column) What forms the sacrum?
5 fused sacral vertebrae
(Vertebral Column) What forms the coccyx?
4 fused coccygeal vertebrae
What is the smallest vertebrae?
cervical vertebrae
(Cervical Vertebrae) What does the atlas do?
supports head
(Cervical Vertebrae) What does the axis do?
pivots around dens
What are 2 things to know about the thoracic vertebrae?
- articulate with the ribs
- pointed spinous process
What are 2 things to know about lumbar vertebrae?
- short spinous processes
- weight-bearing
Describe the spinous processes in lumbar vertebrae.
thick and horizontal
Where is the sacrum located?
posterior walls of pelvic cavity
What are 4 things know about the sacrum?
posterior and anterior sacral foramina, sacral canal, hiatus, promontory
What is your coccyx?
tailbone
How many fused vertebrae does your coccyx have?
4
How many pairs of true ribs do we have?
7 pairs
How many pairs of false ribs do we have?
5 pairs
True ribs:
vertebrosternal
Upper 3 pairs of false ribs:
vertebrochondral ribs
Vertebral, lower 2 pairs of false ribs:
floating ribs