Ch 8: The Skeletal System Flashcards
Exam 2 Review
The head and thoracic bones make up the ________ skeleton.
Axial
The clavicle, scapula, arm, leg and pelvic bones make up the _______ skeleton.
appendicular
The axial skeleton contains what bones (general).
skull and thoracic bones
The appendicular skeleton consists of what general bones?
- clavicle
- scapula
- arm bones
- leg bones
- pelvic bones
There are _____ bones in a typical adult skeleton.
206
Why are their more bones in children and infants?
Many will fuse with age and growth.
The cribriform plate forms…
the roof of the nasal cavity (ethmoid bone)
What are the 14 facial bones?
Give names and number of each.
(NIMPLZ VM)
Nasal bones x2
Inferior nasal conchae x2
Maxillae x2
Palatine bones x2
Lacrimal x2
Zygomatic x2
Vomer x1
Mandible x1
What part of the mandible joins at the maxilla?
Mandibular condyles
What are the three auditory ossicles?
- Malleus
- Incus
- Stapes
Damage to what bone is a sign of strangulation?
Hyoid
Which bone is not attached to any other?
Hyoid
What are fontanels?
spaces between unfused bone on a baby’s head
What are the two fontanels found on babies?
Anterior and posterior
What is the age range for when the sacrum vertebrae fuse into one bone?
20-30 years
Ribs 1-7 are called
true ribs
Ribs 8-12 are called…
false ribs
What are the numbers of the floating ribs?
11 and 12
What does costal cartilage do?
Join ribs to sternum
True or False
All ribs connect to the vertevrae
TRUE
What is the hallux?
the big toe
Immovable joints
Sutures
Small holes where nerves pass through
foramina
Part of the ethmoid bone and is perforated by foramina to allow passage of olfactory nerves.
cribriform plate
What physically supports the skull and trunk?
vertebral column
condition that creates problems with the rubbery cushion between two bones.
herniated disks
Supports the trunk and the lower limbs.
pelvic girdle
Bone feature:
A rounded knob found at joints
condyle
Bone feature:
Smooth ,flat and slightly concave articular surface.
facet
Bone feature:
Prominent end of a bone
head
Bone feature:
A narrow ridge
crest
Expanded region superior to a condyle
epicondyle
Bone feature:
slightly raised elonged ridge
line
Bone feature:
Any boney prominence
process
Bone feature:
A protruding part
protuberance
Bone feature:
A sharp slender, or narrow process
spine
Bone feature:
Massive processes unique to the femur
trochanter
Bone feature:
Small, rounded, process
tubercule
Bone feature:
Rough, elevated surface
tuberosity
Bone feature:
Elongaged basin
fossa
Bone feature:
small pit
fovea
Bone feature:
Tunnel in a bone
canal
Bone feature:
A slit through a bone
fissure
Bone feature:
A hole through a bone
foramen
Bone feature:
Air filled space
sinus
What is the difference between male and female pelvic girdle?
The female girdles greater in width and the male pelvic is better for movement.
True or False Condyles are found int he axial skeleton only.
False
The mastoid process cannot be palpated on a living person.
False
True or False
Sutures are found in the cranial bones, facial bones and sacral bones.
False
All ribs articulate with the sternum.
False
The pubic symphysis can be palpated as a hard prominence above the genitalia.
True
The ischium is posterior to the pubis and inferior tot he ilium.
True
The average number of bones int he adult skeleton is…
206
All the bones listed below belong to the axial skeleton, except _______, which belongs to the appendicular.
- Vertibrae
- Ribs
- Scapula
- Sacrum
- Sternum
Scapula
A rounded knob that articulates with another bone is called a…
condyle
Any bony prominence is called
a process
Why does an adult not have as many bones as a child?
because separate bones gradually fuse with age.
What is a sesamoid bone?
A bone that forms within some tendons in response to stress.
A whole through a bone that usually allows passage for nerves and blood vessels is called a…
foramen
Most of the bones of the skull are connected by immovable joints called
sutures
The _______ houses the pituitary gland (hypophysis) and is found in the _______.
sella turcica; sphenoid bone
The manubrium belongs to the
sternum
Rib 7 is a
true rib
Costal cartilages connect
ribs with the sternum
The acromion is a feature of the
scapula
The arm contains the _______, whereas the forearm contains the _______.
humerus, radius and ulna
The glenoid cavity of the _______ articulates with the head of the _______.
scapula, humerus
The acetabulum articulates with the
femur
