Block 4-4a Osteology and Arthrology of the Ribs and Sternum
1. The primary function of the thoracic cage is to protect the organs of the
respiratory and cardiovascular systems.
a. True
b. False
2. How many pairs of ribs are there?
a. 10
b. 21
c. 12
d. 11
3. The true ribs are pairs __ through ___?
a. 9 through 11
b. 8 through 12
c. 1 through 12
d. 1 through 7
4. Anterior end of fibs 8, 9, 10 do not connect with the sternum. They attach to each
rib ______ to them by way of costal cartilage.
a. Lateral
b. Medial
c. Inferior
d. Superior
5. The sternum is also known as the ______ bone.
a. Collar
b. Wish
c. Breast
d. Dog
6. Which one of the following is a palpable radiographic landmark?
a. Manubrial notch
b. Clavicular notch
c. 1st chondrosternal articulation
7. The Xiphoid process usually ossifies around ____ years of age.
a. 4
b. 40
c. 14
d. 24
8. ______ is the attachment point for the diaphragm.
a. Ensiform
b. Styloid process
c. Xiphoid Process
d. Both A and C
9. The Manubrium forms the thick upper portion of the sternum.
a. True
b. False
10. Which pairs of ribs are considered “False Ribs”?
a. 1 and 2
b. 10 and 11
c. 11 and 12
d. 8 and 12