From where is semen ejected? Within the scrotum Through the prostate gland Through the urethra Within the ejaculatory duct Question 34 Which artery supplies blood to the head and neck? Brachial artery Carotid artery Aorta Femoral artery Question 35 Which of the following is the middle, muscular layer of the heart? Myocardium Pericardium Endocardium Endothelium