Which muscle is innervated by the ulnar nerve? select from letters a-d?

The ulnar nerves innervate muscles in the frontal part of the forearm, and in the hand. In the anterior forearm, the well-developed branch of ulnar nerve provisions two muscles: Flexor carpi ulnaris which stretches and abducts the hand at the wrist; and Flexor digitorum profundus which stretches the fingers.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.