Skeletal System Week 3 Flashcards
How many bones int he axial skeleton?
80 bones
How many vertebrae bones?
26
How many ribs? Pairs of ribs?
24 rib bones. 12 pairs
How many bones in the skull?
22 bones + 6 ossicles (which are tiny bones) = 28 bones total in the skull
Name all the main bones of the axial skeleton.
Skull Vertebrae Sternum Ribs Hyoid
How many different parts are there in the Vertebral system?
5
Name all the parts in the Vertebrae skeletal system.
Cervical vertebrae Thoracic vertebrae Lumbar Vertebrae Sacrum Coccyx
How many parts of the Cervical, thoracic, and/or lumbar vertebrae should you know?
7 parts
Name the parts of the Cervical, thoracic, and/or lumbar vertebrae should you know?
Vertebral foramen Body Transverse processes Spinous processes Superior articular process & facet Inferior articular process & facet Intervertebral foramen
What is the total number of cervical vertebrae?
7 total
Name the two types of cervical vertebrae.
C1: Atlas
C2: Axis
What is so special about the C1: Atlas vertebrae in the cervical vertebral system?
It does not have a body
What is so special about the C2: Axis vertebrae in the cervical vertebral system?
It has a “dens”.
What is another name for the dens of the C2: Axis vertebrae of the cervical vertebral system?
odontoid process
What is an odontoid process?
Another name for the dens of the C2: Axis vertebrae of the cervical vertebral system.
What is unique about the cervical vertebrae?
They have transverse foramina, which are not found on any other vertebrae.
What is the total number of Thoracic vertebrae?
12 total
What do the thoracic vertebrae look like?
Giraffe head
What is unique about the thoracic vertebrae?
They have Costal facets, which are not found on any other vertebrae.
What is the purpose of costal facets?
They articulate with ribs.
What vertebrae have costal facets?
Thoracic vertebrae.
Where are costal facets located on thoracic vertebrae?
They are located on the bodies and transverse process of most of the thoracic vertebrae.
What is the total number of lumbar vertebrae?
5 total
What do lumbar vertebrae look like?
A moose head.
Sacrum is formed by?
“5 fused together…”
What part of the sacrum must we know?
Auricular surfaces.
What do the auricular surfaces do?
Articulate with the coxae.
Coccyx is formed by?
“4 plus/minus fused together…”
Where are the ribs attached?
Attach to sternum by costal cartilage.
How do you tell a right rib from a left rib?
?
What is a true rib?
?
What is a false rib?
?
What is a false floating rib?
?
How many parts of the rib must we know?
Know 6 parts
What parts of each rib must we know?
Head Articular facets Neck Tubercle Costal groove Sternal End
What do the articular facets of the ribs do?
they articulate with the thoracic vertebrae
How does the sternum attach to the ribs?
attach to ribs via costal cartilage
What is the sternum made up of?
3 bones:
Manubrium
Body
Xiphoid process
Define axial skeleton.
The part of the skeleton that includes the skull, vertebrae, sternum, ribs, and hyoid. Axial skeleton has a total of 80 bones.
Define appendicular skeleton
?
Whats the difference between the pectoral girdle and the pelvic girdle?
?
What makes up the upper extremity?
?
What makes up the lower extremity?
?
What part of a rib articulates with the transverse process of a vertebra?
tubercle
What is the most inferior portion of the sternum?
xiphoid
What two features do cervical vertebrae have that no other vertebrae have?
The transverse foramina - the left and the right.
What is the name of the superior portion of the sternum?
The manubrium.
The superior articular process of a vertebra articulates with what specific structure?
The superior articular process of a vertebrae “articulates with the inferior facet on the inferior process on the superior vertebra”.
How many lumbar vertebrae are in the human body?
five
Name the second cervical vertebrae.
Axis
Does the hyoid bone have any solid bony attachments?
no, its attached by muscles.
What is a rib that attaches to the sternum by the cartilage of another rib?
A false rib. These ribs (8-12) are also called vertebrochondral ribs.
