All Human Anatomy and Physiology Resources
Example Questions
Example Question #155 : Organs
Which of the following structures does not pass through the jugular foramen?
Inferior petrosal sinus
Facial nerve (cranial nerve VII)
Glossopharyngeal nerve (cranial nerve IX)
Sigmoid sinus
Vagus nerve (cranial nerve X)
Facial nerve (cranial nerve VII)
Cranial nerves IX and X, as well as the inferior petrosal and sigmoid sinuses pass through the jugular foramen, while cranial nerve VII passes through the internal auditory meatus.
Example Question #156 : Organs
Which of the following is not part of the cardiac conduction system?
Purkinje cells
Bundle of His
Purkinje fibers
Atrioventricular (AV) node
Sinoatrial (SA) node
Purkinje cells
Purkinje cells are found in the cerebellum, and are not part of the cardiac conduction system. All other answer choices are part of the cardiac conduction system, which terminates in the Purkinje fibers.
Example Question #157 : Organs
Which layer of the skin does not contain blood vessels?
Supradermis
Hypodermis
None of these
Epidermis
Dermis
Epidermis
The epidermis does not have direct blood supply; all nutrients that feed cells within the epidermis come from the dermis. The hypodermis lies beneath the dermis and consists of loose connective tissue such as fat. The hypodermic layer also contains blood vessels, lymph vessels, and sweat glands.
Example Question #158 : Organs
Which nerve does not branch off of a division of the trigeminal nerve?
Infratrochlear nerve
Mental nerve
Buccal nerve
Infraorbital nerve
Lesser occipital nerve
Lesser occipital nerve
The lesser occipital nerve comes from the cervical plexus. The mental and buccal nerves come from the mandibular division of the trigeminal nerve, the infratrochlear nerve comes from the ophthalmic division of the trigeminal nerve, and the infraorbital nerve comes from the maxillary division of the trigeminal nerve.
Example Question #161 : Organs
What structure passes through the vertebral foramina of the cervical vertebrae?
Internal carotid artery
Ligamentum nuchae/nuchal ligament
External carotid artery
Vertebral artery
Alar ligament
Vertebral artery
The vertebral artery passes through the transverse foramina of the cervical vertebrae. The alar ligament connects the odontoid process of cervical vertebra 2 (C2), also known as the axis, to the occipital bone. The nuchal ligament spans from the external occipital protuberance to the spinous process of C7. Although the internal and external carotid arteries supply blood to structures in the cervical spine, the do not pass through the transverse foramina.
Example Question #162 : Organs
Which of the following is not a major branch of the facial nerve?
Lingual branch
Zygomatic branch
Temporal branch
All of these are branches of the facial nerve
Buccal branch
Lingual branch
The five major branches of the facial nerve are (in order from superior to inferior): Temporal, Zygomatic, Buccal, Marginal mandibular, and Cervical. (A helpful mnemonic: The Zebra Bit My Cookie)
Distal to the stylomastoid foramen (extracranially) the facial nerve also branches to the digastric muscle as well as the stylohyoid muscle. The facial nerve also gives off a branch to the posterior auricular nerve which controls scalp muscles around the ear.
Example Question #163 : Organs
What is the main vessel that sends oxygen-poor blood from the heart to the lungs?
Bronchial arteries
Peroneal vein
Aorta
Pulmonary artery
Pulmonary vein
Pulmonary artery
The pulmonary artery carries oxygen-poor blood from the right ventricle to the lungs. The blood here passes through capillaries adjacent to alveoli and becomes oxygenated as part of the process of respiration. The oxygen-rich blood then enters the pulmonary vein and is drained into the left atrium of the heart. From the left atrium blood then enters the left ventricle where it will be ejected through the aorta.
In contrast to the pulmonary arteries, the bronchial arteries supply nutrition to the lung themselves. The peroneal vein (aka fibular vein) helps carry blood from the lateral compartment of the leg.
Example Question #164 : Organs
Which nerve runs through the quadrangular space of the upper limb?
Radial nerve
Suprascapular nerve
Axillary nerve
Subscapular nerve
Axillary nerve
The axillary nerve, along with the posterior circumflex humeral artery and vein, pass through the quadrangular space. The quadrangular space boundaries consist of the teres minor muscle, the surgical neck of the humerus, the superior margin of the teres major, and the long head of the triceps brachii.
Example Question #165 : Organs
Which the following nerves does not have any motor function?
Long thoracic nerve
Tibial nerve
Musculocutaneous nerve
Saphenous nerve
Saphenous nerve
The long thoracic nerve innervates the serratus anterior, and only has motor function. Although the musculocutaneous nerve provides cutaneous sensation to the lateral forearm, it also innervates the biceps brachii, brachialis, and coracobrachialis muscles. The tibial nerve innervates the hamstrings (except the biceps femoris short head) and provides sensation to the plantar surface of the foot (via the plantar nerves). The saphenous nerve provides cutaneous sensation to the medial lower extremity, and does not have any motor function
Example Question #166 : Organs
Which of the following arteries does not directly branch off from the celiac trunk?
Common hepatic
Left gastric
Splenic
Gastroduodenal
Gastroduodenal
The celiac trunk (which comes off the abdominal aorta) divides into the splenic, common hepatic, and left gastric arteries. The splenic artery, is large and highly tortuous. It gives off the left gastroepiploic artery, some short gastric arteries, and some pancreatic branches. The common hepatic artery, gives off the proper hepatic artery, the right gastric artery, and the gastroduodenal artery. The left gastric artery gives rise to the esophageal and hepatic branches.
The gastroduodenal artery branches from the common hepatic artery where it descends behind the duodenum to divide into the right gastroepiploic and superior pancrearicoduodenal arteries.
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