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NEET MDS Quiz - Practice Test
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Practice Test

Anatomy - 3 Questions

1
Anatomy
Which of the following does not apply to the facial artery?
1. It has two portions cervical and facial
2. It arises just above the lingual artery from the anterior part of the external carotid
3. It crosses the mandible at anterior edge of masseter muscle
4. Its cervical portion lies beneath platysma muscle and facial portion lies superficial in carotid triangle

📝 Explanation:

Facial Artery:

1: True, it has cervical and facial portions.

2: True, it arises from the external carotid artery above the lingual artery.

3: True, it crosses the mandible at the anterior edge of the masseter muscle.

4: False, the cervical portion lies beneath the platysma, but the facial portion does not exactly lie "superficial in the carotid triangle"; rather, the facial artery travels more superficially than the cervical part in its course.

2
Anatomy

Which of the following is TRUE regarding the attachment of the mylohyoid muscle?
1) It attaches superiorly at the lateral border of the mandible and inferiorly at the body of the hyoid.
2) It attaches superiorly at the medial border of the mandible and inferiorly at the lesser horn of the hyoid
3) It attaches superiorly at the medial border of the mandible and inferiorly at the greater horn of the hyoid
4) It attaches superiorly at the medial border of the mandible and inferiorly at the body of the hyoid

📝 Explanation:

It attaches superiorly at the medial border of the mandible and inferiorly at the body of the hyoid

3
Anatomy
A wound to the posterior left axillary line, between the ninth and tenth rib, and extending approximately 5 cm deep, will most likely damage which organ?
1) Ascending colon
2) Duodenum  
3) Left kidney
4) Spleen

📝 Explanation:

The spleen follows the long axes of ribs 9 to 11 and lies mostly posterior to the stomach, above the colon, and partly anterior to the kidney. It is attached to the stomach by a broad mesenterial band, the gastrosplemic ligament. Therefore, it is the most likely organ of the group to be pierced by a sharp object penetrating just above rib 10 at the posterior axillary line. Note that the pleural cavity, and possibly the lower part of the inferior lobe of the lung, would be pierced before the spleen. The ascending colon (choice 1) is on the wrong side (the right) to be penetrated by a sharp instrument piercing the left side.

Most of the duodenum (choice 2) is positioned too far to the right to be affected by this injury.

Even the third part of the duodenum, which runs from right to left, would still be out of harm's way. In addition, the duodenum lies at about levels L1 to L3, placing it too low to be injured in this case.

The superior pole of the left kidney (choice 3) is bordered by the lower part of the spleen. However, it is crossed by rib 12 and usually does not extend above rib 11. It would probably be too low and medial to be injured in this case because this penetration is at the posterior axillary line.

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