LRA-213 Chapter 10 workbook Flashcards
list the three structures that make up the bony thorax
- sternum
- thoracic vertebrae
- 12 ribs
what is the term for the long, middle aspect of the sternum?
body
the most distal aspect of the sternum does not ossify until a person is approximately _____ years of age
40
the total sternum length on an average adult is about ____ inches (____cm)
6;15
the xiphoid process of the sternum is at the approximate level of the ______ vertebrae
T9-T10
the sternal angle is at the level of ________
T4-T5
what is another term for the sternal angle?
manubriosternal joint
what is the name of the joint that connects the upper limb to the bony thorax (the only bony connection between the bony thorax and the upper limb)?
sternoclavicular joint
what is the name of the section of cartilage connects the anterior end of the rib to the sternum?
costocartilage
what distinguishes a true rib from a false rib?
direct articulation via costocartilage
true or false: the eleventh and twelfth ribs are classified as false and floating ribs
true
true or false: the anterior aspect of the ribs is called the vertebral end
false
which aspect of the ribs articulates with the transverse process of the thoracic vertebrae?
tubercle
list the three structures found within the costal groove of each rib?
- artery
- vein
- nerve
which end of the rib is most superior - the posterior vertebral ends of the anterior sternal ends?
posterior/vertebral end
approximately how much difference in heigh is there between these two ends of the ribs?
3-5 inches (7.5-12.5cm)
which ribs articulate with the upper lateral aspect of the manubrium of the sternum?
1st anterior/sternal end
the bony thorax is widest at the lateral margins of which ribs?
8 or 9
how many posterior ribs are shown above the diaphragm?
10 ribs
what type of joint is the first sternocostal?
immovable/synarthrodial
what type of joint is the 1st-12th costovertebral joints?
movable/diarthrodial (plane or gliding)
what type of joint is the 1st-10th costochondral unions (between costocartilage and ribs?
immovable/synarthrodial
what type of joint is the 1st-10th costotransverse joints (between ribs and transverse process of T vertebrae)?
movable/diarthrodial (plane or gliding)
what type of joint is the 2nd-7th sternocostal joints (between second and seventh ribs and sternum)
movable/diarthrodial (plane or gliding)
what type of joint is the 6th-9th interchondral joints (between anterior 6th and 9th costal cartilage)?
movable/diarthrodial (plane or gliding)
what type of joint is the 9th and 10th interchondral joints between the cartilage?
fibrous/syndesmosis
the joints with diarthrodial movements are classified as-
synovial
what is unique about the floating ribs (1-7)?
they connect directly to the sternum via their own costocartilage
what is unique about the floating ribs (11-12)?
they do not connect to neither the sternum nor costocartilage
