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