Q- Which of the following is the most common cancer of the lower third of esophagus in non-alcoholic, non-smoker patients?
D- Squamous cell carcinoma.
Q- Which of the following muscles are responsible for primary abduction of the arm at the shoulder joint?
A- Coracobrachialis and deltoid
B- Deltoid and infraspinatus
C- Deltoid and supraspinatus
D- Supraspinatus and infraspinatus
Q- Which of the following is the cellular mechanism of epinephrine?
A- Activation of adenylyl cyclase
B- Activation of acetylcholinesterase
C- Activation of phospholipase
D- Inhibition of adenylyl cyclase