All Human Anatomy and Physiology Resources
Example Questions
Example Question #147 : Organs
What vein carries blood to the lungs directly from the right ventricle?
Right pulmonary artery
Left pulmonary artery
Pulmonary trunk
Aorta
Left common carotid artery
Pulmonary trunk
While it is true that the left and right pulmonary arteries carry blood to the lungs, it is the pulmonary trunk that receives blood directly from the right ventricle because the pulmonary trunk then branches into the left and right pulmonary arteries. The aorta carries blood from the left ventricle to the systemic circulation. The left common carotid artery branches off the brachiocephalic trunk, which itself branches off the aortic arch.
Example Question #148 : Organs
What vein most directly drains blood from the cheeks, lips, and nose?
External jugular vein
Facial vein
Internal jugular vein
Posterior auricular vein
Facial vein
The facial vein is responsible for draining the blood from the cheeks, lips, and nose. The posterior auricular vein drains blood from behind the ears. The internal jugular vein drains blood from the brain, face, and scalp (the facial vein drains into the internal jugular vein). The external jugular vein drains blood from the face and scalp. Both jugular veins drain into the subclavian vein.
Example Question #149 : Organs
Which artery supplies the mouth and nose?
Superficial temporal
Carotid
Axillary
Maxillary
Maxillary
The maxillary artery supplies blood to the mouth and nose. The axillary artery is located near the armpit and does not supply the head with blood. The carotid supplies most of the tissues of the head, but divides into branches, and most of its blood is taken to the brain. The superficial temporal artery supplies the top and sides of the head.
Example Question #624 : Gross Anatomy
What cranial nerve carries visual information to the brain?
IV
II
I
III
II
Cranial nerve (CN) II is also known as the optic nerve, which carries visual stimuli to the brain. CN I is the olfactory nerve and it allows for the detection of odors. CN III is the oculomotor nerve, which allows the eyeball to move. CN IV is the trochlear nerve, which helps rotate the eye inferiorly and laterally.
Example Question #151 : Organs
Which artery supplies blood to the head and neck?
Internal jugular
Superior vena cava
Common carotid
Brachial
Common carotid
The common carotid is an artery that supplies blood to the head and neck. The internal jugular is the vein that drains blood from the head and neck. The brachial artery provides blood to the arm. The superior vena cava is a large vein that returns blood to the heart from the head and arms.
Example Question #151 : Organs
Which of the following blood vessels most directly drains the legs?
Femoral artery
Pulmonary trunk
Inferior vena cava
Great saphenous vein
Great saphenous vein
The great saphenous vein is responsible for draining the blood from the legs. The femoral artery supplies blood to the legs. The inferior vena cava returns blood from the legs and abdomen to the heart. The pulmonary trunk bifurcates into the right and left pulmonary arteries, which bring oxygen-poor blood to the lungs, where it becomes oxygenated.
Example Question #152 : Organs
What is a lumen?
The inside of the intestines only
The interior of any hollow organ
The inside of a blood vessel only
The inside of the lung only
The interior of any hollow organ
The interior of any hollow organ is called its lumen. A lumen may be completely or partially filled with air or fluid. All of the answer choices are specific examples of lumens.
Example Question #152 : Organs
Which cranial nerve is the trigeminal nerve?
I
V
VI
XI
V
The trigeminal nerve is cranial nerve (CN) V, it has both sensory and motor functions including sensation of the face and scalp, and control of the muscles of mastication. CN XI is the accessory nerve, which has only motor functions, and innervates the muscles of the lateral and posterior neck. CN VI is the abducens nerve, which is a motor nerve that innervates the lateral rectus and controls eye movements. CN I is the olfactory nerve and involves the sense of olfaction.
Example Question #153 : Organs
Someone with an injury to the posterior cord of the brachial plexus would likely present with weakness to which of the following muscles?
Biceps brachii
Lumbricals III and IV
Triceps brachii
Serratus anterior
Flexor carpi ulnaris
Triceps brachii
The triceps brachii is innervated by the radial nerve, which comes from the posterior cord of the brachial plexus. Accordingly, damage to the posterior cord would disrupt function of the triceps brachii, among other muscles. Lumbricals III and IV, and the flexor carpi ulnaris are innervated by the ulnar nerve, which comes from the medial cord of the brachial plexus. The biceps brachii is innervated by the musculocutaneous nerve, which comes from the lateral cord of the brachial plexus. The serratus anterior is innervated by the long thoracic nerve, which is a pre-plexus nerve.
Example Question #154 : Organs
Which of the following does not supply blood to the myocardium of the heart?
Left coronary artery
Circumflex artery
Right coronary artery
Coronary sinus
Left anterior descending artery
Coronary sinus
All of the arteries listed, are coronary arteries, or branches of coronary arteries, which supply blood to the myocardium. The coronary sinus is a group of veins, so it drains blood from the myocardium, rather than supplying it.