Question 1

Coordination of muscle movement, as well as maintenance of equilibrium and posture, are controlled by which structure of the brain?

Accepted Answer

The cerebellum helps coordinate skeletal muscle movements of the body, including maintenance of posture and equilibrium.

Question 2

Which layer of fascia contains lymphatic vessels within the neck?

Accepted Answer

The subcutaneous layer of neck fascia contains lymphatic vessels. This layer also contains blood vessels, cutaneous nerves, fat, and the anterolateral portion of the platysma.

Question 3

Which of the following alternatives can lead to secondary hypertension?

Accepted Answer

A fixed lesion of the renal artery results in impaired perfusion. When the kidney is poorly perfused, it increases renin secretion, which increases blood pressure and thus improves renal blood flow.

Question 4

Which of the following structures converge to form the pterygomandibular raphe?

Accepted Answer

The pterygomandibular raphe is formed by the convergence of the buccinator and the superior pharyngeal constrictor.

Question 5

Which of the following directions does the articulating disc of the temporomandibular joint most often displace?

Accepted Answer

The lateral pterygoid muscle will cause anteromedial displacement of the articulating disc, upon contraction.

Question 6

Which of the following wraps around the ligamentum arteriosum?

Accepted Answer

The Laryngeal nerve, a branch of the vagus nerve (CN X), wraps around the arch of the aorta, which is also known as the ligamentum arteriosum, as it ascends in the mediastinum.

Question 7

Which of the following features is NOT present in Autonomic dysreflexia?

Accepted Answer

The following features are commonly found in autonomic dysreflexia: severe hypertension, sweating and headaches, bradycardia, and increased parasympathetic activity.

Question 8

Which of the following structures does not form the boundary known as the femoral triangle?

Accepted Answer

The cremaster muscle, a continuation of the internal oblique musculature in the lower abdominal region, is not part of the femoral triangle.

Question 9

Which of the following germ layer derivatives comprise the epithelial lining of the cardiovascular system?

Accepted Answer

Mesoderm makes up the epithelial lining of the cardiovascular system, as well as most of the urogenital system.

Question 10

Which of the following structures of the adult heart is a remnant of the foramen ovale in the fetal heart?

Accepted Answer

The fossa ovalis, which lies on the atrial septum (separating the right and left atria), is the adult remnant of the fetal foramen ovale. Its upper margin is the anulus ovalis.

Question 11

Which of the following areas of the mediastinum contains the vagus nerve?

Accepted Answer

The vagus nerve travels through the posterior portion of the inferior mediastinum.

Question 12

Which of the following brainstem nuclei is not involved with cranial nerve function?

Accepted Answer

The ventromedial nucleus is located within the hypothalamus. It -functions as the satiety center involved with body homeostasis.

Question 13

The common facial vein receives drainage from each of the following veins EXCEPT:

Accepted Answer

The common facial vein eventually drains into the internal jugular vein and does not receive drainage from it.

Question 14

Motor innervation would be affected by damage to the cervical plexus in all of the following muscles EXCEPT:

Accepted Answer

The stylohyoid muscle is innervated by CN VII and is considered a suprahyoid muscle. Motor innervations from the cervical plexus include the genioglossus muscle (C1 by way of CN XII) and infrahyoid muscles.

Question 15

Which of the following types of transport does not use metabolic energy and does not depend on a sodium gradient but is instead carrier mediated?

Accepted Answer

Facilitated diffusion is a passive process that does not use metabolic energy and does not depend on a sodium gradient. It is, however, carrier mediated.

Question 16

Which of the following is not a derivative of the amino acid Tryptophan?

Accepted Answer

Creatine is is not a derivative of the amino acid (Tryptophan); it is a derivative of the amino acids glycine and arginine.

Question 17

Down syndrome is directly linked to a genetic abnormality of what chromosome?

Accepted Answer

In most cases of Down syndrome, a child gets an extra chromosome 21-for a total of 47chromosomes, instead of 46.

Question 18

Which of the following is the most common cause of cyanosis within the first few weeks of life?

Accepted Answer

Tetralogy of Fallot (ToF) is the most common cause of cyanotic CHD.

Question 19

Which of the following mature structures is derived from fetal allantois and urachus

Accepted Answer

Fetal allantois and urachus make up the median umbilical ligament.

Question 20

Valsalva's maneuver is a condition that may result in all but which of the following ?

Accepted Answer

Valsalva's maneuver is a condition that may result in an increase in intrathoracic pressure, collapse of the vein of the chest wall, slow pulse, and decreased return of blood to the heart

Quiz 1: Dental Board