A 28-year-old man has a minor injury as a result of motor car accident. He complains of severe pain due to a scratch on his scalp across the front hairline.
Which one of these nerves is related to this pain?
A 74-year-old man presents to the clinic with a complaint of palpitation and lightheadedness. Image studies revealed blockage of the artery to the SA node.
This artery arises from which of these arteries?
A-Left coronary artery
B-Right coronary artery
D-Anterior interventricular artery
E-Posterior interventricular artery