Which of the following is a common oral manifestation of celiac disease characterized by enamel defects with horizontal or vertical grooves on the teeth?

Correct Answer: B

Rationale: Enamel hypoplasia is a common oral manifestation of celiac disease characterized by defects in the enamel of the teeth. These defects can appear as horizontal or vertical grooves on the teeth. Enamel hypoplasia is caused by disruptions in the formation of enamel during tooth development, leading to thin enamel or localized pitting. It can affect the appearance and strength of the teeth, making them more prone to sensitivity and breakdown. In individuals with celiac disease, enamel hypoplasia may occur due to malabsorption of essential nutrients like calcium and vitamin D. Therefore, when observing oral manifestations such as enamel defects with grooves, it is important to consider the possibility of celiac disease as an underlying cause.

Correct Answer: B

Rationale: The stomach is responsible for producing hydrochloric acid and intrinsic factor. Hydrochloric acid helps in the breakdown of proteins during digestion, while intrinsic factor aids in the absorption of vitamin B12 in the small intestine. These two components are crucial for the proper functioning of the digestive system, particularly in breaking down food and absorbing essential nutrients. The liver is involved in bile production, the pancreas in the production of digestive enzymes, and the small intestine in nutrient absorption, but the specific functions related to hydrochloric acid and intrinsic factor are primarily attributed to the stomach.

Correct Answer: C

Rationale: When controlling severe external bleeding from an extremity, the recommended action is to apply direct pressure with a sterile dressing. Direct pressure helps to stop the bleeding by promoting clot formation and reducing blood flow from the wound. This method is effective in most cases and should be the first response to control bleeding. Elevating the extremity above the level of the heart can be helpful in some cases, but direct pressure is the initial recommended action. Applying a tourniquet proximal to the injury site should only be done as a last resort when other methods are not successful, as it can lead to complications such as tissue damage. Removing any impaled objects can actually worsen the bleeding and should be avoided unless necessary for immediate life-saving measures.

Correct Answer: A

Rationale: The recommended position for a conscious patient experiencing an acute asthma exacerbation is the High-Fowler's position. This position involves the patient sitting upright or almost upright at about a 90-degree angle. The High-Fowler's position helps improve ventilation by expanding the lungs and maximizing airflow in and out of the airways. It also reduces the work of breathing in patients with asthma by allowing gravity to assist in moving air in and out of the lungs more easily. Additionally, this position can help alleviate shortness of breath and improve oxygenation in patients experiencing an asthma exacerbation.

Correct Answer: C

Rationale: The appropriate initial management for a conscious patient experiencing a syncopal episode (fainting) is to provide reassurance and assist the patient to a lying position. This is important to ensure adequate blood flow to the brain and to prevent further injury in case the patient faints again. Elevating the legs above the level of the heart is not recommended as a routine intervention for syncope. Administering intravenous fluids rapidly is not usually needed in the initial management of syncope without signs of dehydration or significant bleeding. Administering oxygen via nasal cannula is not necessary for most cases of syncope unless there are specific indications such as signs of respiratory distress.