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  • Question 1 - The pterygoid plexus receives tributaries from which of the following veins? ...

    Incorrect

    • The pterygoid plexus receives tributaries from which of the following veins?

      Your Answer: Internal jugular vein

      Correct Answer: Maxillary vein

      Explanation:

      The pterygoid plexus of veins is the main venous component associated with the infratemporal fossa. It receives tributaries corresponding to the branches of the internal maxillary artery. This plexus communicates freely with the anterior facial vein; it also communicates with the cavernous sinus, by branches through the foramen of Vesalius, foramen ovale and foramen lacerum. The (internal) maxillary vein is a short trunk which accompanies the first part of the (internal) maxillary artery. It is formed by a confluence of the veins of the pterygoid plexus and passes backward between the sphenomandibular ligament and the neck of the mandible and unites with the temporal vein to form the posterior facial vein. It carries blood away from the infratemporal fossa.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      21.8
      Seconds
  • Question 2 - Which of the following is involved in vitamin B12 absorption? ...

    Incorrect

    • Which of the following is involved in vitamin B12 absorption?

      Your Answer: Fe3+

      Correct Answer: Intrinsic factor

      Explanation:

      Absorption of vitamin B12 is by an active transport process and occurs in the ileum. Most cobalamins are bound to proteins and are released in the stomach due to low pH and pepsin. The cobalamins then bind to R proteins, i.e. haptocorrin (HC) secreted from salivary glands and gastric juice. Another cobalamin binding protein is Intrinsic factor (IF) secreted from the gastric parietal cells. The cobalamin-HC complex is digested by pancreatic proteases in the intestinal lumen, and the free cobalamin then binds to IF. The complex then reaches a transmembrane receptor in the ileum and undergoes endocytosis. Cobalamin is then released intracellularly and binds to transcobalamin II (TC II). The newly formed complex then exits the ileal cell and enters the blood circulation.

    • This question is part of the following fields:

      • Gastroenterology
      • Physiology
      13.1
      Seconds
  • Question 3 - Leakage from a silicone breast implant can lead to: ...

    Incorrect

    • Leakage from a silicone breast implant can lead to:

      Your Answer: Scleroderma

      Correct Answer: Pain and contracture

      Explanation:

      Breast implants are mainly: saline-filled and silicone gel-filled. Complications include haematoma, fluid collections, infection at the surgical site, pain, wrinkling, asymmetric appearance, wound dehiscence and thinning of the breast tissue.

    • This question is part of the following fields:

      • Pathology
      • Women's Health
      31.2
      Seconds
  • Question 4 - A 55-year-old male has a mass on the right lung with involvement of...

    Incorrect

    • A 55-year-old male has a mass on the right lung with involvement of the right mediastinal lymph nodes. What is the nodal staging according to the TNM staging?

      Your Answer: N0

      Correct Answer: N2

      Explanation:

      The N stages for lung cancer are from NO to N3 : NO, there is no lung cancer in any lymph nodes: N1, there is lung cancer in the proximal lymph nodes: N2, there is lung cancer in the mediastinal hilar lymph nodes, but on the same side as the affected lung or there is lung cancer in the carinal lymph nodes: N3, there is metastatic lung cancer in lymph nodes on the opposite side of the chest, in the cervical or apical lymph nodes. In this patient the ipsilateral mediastinal node is involved, thus it is classified as N2.

    • This question is part of the following fields:

      • Neoplasia
      • Pathology
      8.3
      Seconds
  • Question 5 - Which of the deep fasciae located in the anterolateral abdominal wall form the...

    Incorrect

    • Which of the deep fasciae located in the anterolateral abdominal wall form the inguinal ligament?

      Your Answer: Lower fibres of the rectus abdominis

      Correct Answer: External abdominal oblique aponeurosis

      Explanation:

      The inguinal ligament is the inferior border of the aponeurosis of the external oblique abdominis and extends from the anterior superior iliac spine to the pubic tubercle from whence it is reflected backward and laterally to attach to the pectineal line and form the lacunar ligament.

    • This question is part of the following fields:

      • Abdomen
      • Anatomy
      12.9
      Seconds
  • Question 6 - Bile salt reuptake principally occurs where? ...

    Incorrect

    • Bile salt reuptake principally occurs where?

      Your Answer: In the duodenum

      Correct Answer: In the ileum

      Explanation:

      90 – 95% of the bile salts are absorbed from the small intestine (mostly terminal ileum and then excreted again from the liver. This is known as the enterohepatic circulation. The entire pool recycles twice per meal and approximately 6 to 8 times per day.

    • This question is part of the following fields:

      • Gastroenterology
      • Physiology
      18.1
      Seconds
  • Question 7 - A patient at the time of her second delivery opted for a bilateral...

    Incorrect

    • A patient at the time of her second delivery opted for a bilateral pudendal nerve block. In order to inject the anaesthetic agent near the pudendal nerve a anaesthetic consultant had to insert a finger into the vagina and press laterally to palpate which landmark?

      Your Answer:

      Correct Answer: Ischial spine

      Explanation:

      The ischial spine is always palpated through the walls of the vagina when performing a transvaginal pudendal nerve block and can easily be palpated on the lateral wall of the vagina.

    • This question is part of the following fields:

      • Anatomy
      • Pelvis
      0
      Seconds
  • Question 8 - Calculate the stroke volume in an adult male with the following parameters:

    Heart...

    Incorrect

    • Calculate the stroke volume in an adult male with the following parameters:

      Heart rate 70 beats/min

      Arterial [O2] 0.24 ml O2/min

      Venous [O2] 0.16 ml O2/mi

      Whole body O2 consumption 500 ml/min

      Pulmonary diastolic pressure 15 mmHg

      Pulmonary systolic pressure 25 mmHg

      Wedge pressure 5 mmHg.

      Your Answer:

      Correct Answer: 90 ml

      Explanation:

      Fick’s principle states that, VO2 = (CO × CAO2) – (CO × CVO2) where VO2 = oxygen consumption, CO = cardiac output, CAO2 = oxygen concentration of arterial blood and CVO2 = oxygen concentration of venous blood. Thus, CO = VO2/CAO2– CVO2, CO = 500/0.24–0.16, CO = 500/0.8, CO = 6.25 l/min. Cardiac output is also given by product of stroke volume and heart rate. Thus, stroke volume = cardiac output / heart rate = 6.25/70 × 1000 stroke volume = 90 ml approximately.

    • This question is part of the following fields:

      • Cardiovascular
      • Physiology
      0
      Seconds
  • Question 9 - Which statement is correct regarding secretions from the adrenal glands? ...

    Incorrect

    • Which statement is correct regarding secretions from the adrenal glands?

      Your Answer:

      Correct Answer: Aldosterone is producd by the zona glomerulosa

      Explanation:

      The secretions of the adrenal glands by zone are:

      Zona glomerulosa – aldosterone

      Zona fasciculata – cortisol and testosterone

      Zona reticularis – oestradiol and progesterone

      Adrenal medulia – adrenaline, noradrenaline and dopamine.

    • This question is part of the following fields:

      • Physiology
      • Renal
      0
      Seconds
  • Question 10 - The deep planter artery is a branch of the: ...

    Incorrect

    • The deep planter artery is a branch of the:

      Your Answer:

      Correct Answer: Dorsalis pedis artery

      Explanation:

      The deep plantar artery is a branch of the dorsalis pedis artery.

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      0
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Gastroenterology (1/2) 50%
Physiology (2/4) 50%
Pathology (2/2) 100%
Women's Health (1/1) 100%
Neoplasia (1/1) 100%
Cardiovascular (0/1) 0%
Renal (1/1) 100%
Passmed