Which structure directly produces the posterior rotation of the clavicle needed for normal shoulder girdle elevation?
a. The conoid portion of the coracoclavicular ligament
b. The coracohumeral ligament
c. The subclavius muscle
d. The anterior fibers of the deltoid muscle
ANS: A
During scapular upward rotation, the coracoid process moves inferiorly, causing tension on the coracoclavicular ligament (particularly the conoid portion). The tight ligament pulls on the posteroinferior portion of the clavicle, causing it to rotate posteriorly.
You might also like to view...
Physician services claims are filed using the:
A) claim UB-04 form. B) CMS-1500 claim form. C) UB-92 claim form. D) Medicaid PCCM claim form.
Which of the following is known as a B-need in Maslow's hierarchy of human needs?
A. A patient with cancer needs chemotherapy. B. A medical assistant needs to be respected by his/her fellow medical assistants. C. A child in the waiting room needs a safe play area. D. A family needs food from the food bank. E. A health care provider needs assistance with their own addiction problem.
Elderly patients are defined as patients who are over the age of ____.
A. 55 B. 60 C. 62 D. 65 E. 70
On the figure of the male reproductive system, identify number 1: _______________.
 FIGURE 1.png)