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  • Question 1 - Where is the aqueous humor normally reabsorbed? ...

    Correct

    • Where is the aqueous humor normally reabsorbed?

      Your Answer: Canal of schlemm

      Explanation:

      Aqueous humor is a clear protein free fluid secreted by the ciliary body, it travels to the anterior chamber through the pupil and is absorbed through a network of trabeculae into the canal of schlemm

    • This question is part of the following fields:

      • Medicine
      • Neurology
      12
      Seconds

  • Question 2 - Regarding taste threshold and intensity discrimination: ...

    Correct

    • Regarding taste threshold and intensity discrimination:

      Your Answer: 30% change in concentration of substance tasted is necessary before an intensity difference can be detected

      Explanation:

      The ability of humans to differentiate differences in intensity of taste is poor. A 30% change in the concentration of the substance being tasted is required before an intensity difference is perceived.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      6.2
      Seconds

  • Question 3 - Cranial nerves VI, VII, VIII enter/exit the base of the brain at the:...

    Correct

    • Cranial nerves VI, VII, VIII enter/exit the base of the brain at the:

      Your Answer: Ponto-medullary junction

      Explanation:

      Cranial nerves III, IV and V exit from the pons, VI, VII, VIII exit from the pontomedullary junction and cranial nerve IX, X, XI, XII exit from the medulla.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      8.3
      Seconds

  • Question 4 - The thalamic nuclei that project over wide regions of the neocortex are: ...

    Incorrect

    • The thalamic nuclei that project over wide regions of the neocortex are:

      Your Answer: Midline and intralaminar nuclei

      Correct Answer: Specific relay nuclei

      Explanation:

      The thalamus is considered the relay station for sensory and motor stimuli. There are three basic types of thalamic nuclei: relay nuclei, association nuclei and non-specific nuclei. Relay nuclei receive very well defined inputs and project this signal to functionally distinct areas of the cerebral cortex. These include the nuclei that relay primary sensations and also the nuclei involved in feedback of cerebellar signals and basal gangliar output.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      9.6
      Seconds

  • Question 5 - Dynein proteins transmit polypeptides/proteins in which direction? ...

    Incorrect

    • Dynein proteins transmit polypeptides/proteins in which direction?

      Your Answer: From cell body to axonal terminals (anterograde)

      Correct Answer: From axons terminals to cell body (retrograde)

      Explanation:

      The majority of axonal proteins are synthesised in the cell body and transported along the axons. Microtubules run along the length of the axon and provide tracks for transportation. Kinesin and Dynein are motor proteins that transport proteins and other organelles. Kinesin moves forward or anterograde transport from cell body to axon, whereas Dynein moves retrograde from axon to cell body.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      12.7
      Seconds

  • Question 6 - The neurotransmitter utilised by the Purkinje cells is: ...

    Correct

    • The neurotransmitter utilised by the Purkinje cells is:

      Your Answer: GABA

      Explanation:

      The cerebellar cortex consist of 3 layers: the molecular layer, the granular cell layer and the Purkinje cell layer. Purkinje cells play a fundamental role in controlling motor movement. They release a neurotransmitter called GABA (gamma-aminobutyric acid) which exerts inhibitory actions thereby reducing transmission of impulses. These inhibitory functions enable purkinje cells to regulate and coordinate motor movements.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      8.2
      Seconds

  • Question 7 - The layers of the neocortex from the 1st to the 6th are arranged...

    Incorrect

    • The layers of the neocortex from the 1st to the 6th are arranged as follows:

      Your Answer: Internal granular, internal pyramidal, multiform, molecular, external granular, external pyramidal

      Correct Answer: Molecular, external granular, external pyramidal, internal granular, internal pyramidal, multiform

      Explanation:

      The layers of neocortex from outermost to innermost include: the molecular, external granular layer, external pyramidal, internal granular, internal pyramidal and multiform layer.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      22.1
      Seconds

  • Question 8 - In the olfactory pathway: Mitral cells project to five regions of the olfactory...

    Incorrect

    • In the olfactory pathway: Mitral cells project to five regions of the olfactory cortex. Which one of the following is not one of the five regions?

      Your Answer: Olfactory tubercle

      Correct Answer: Posterior olfactory nucleus

      Explanation:

      The olfactory system contains peripheral and central divisions which are connected by transduction structures. Peripheral division consists mainly of the nostrils, ethmoid bone, nasal cavity, and the olfactory epithelium. Olfactory neurons are receptor cells in the epithelium that detect odour molecules dissolved in the mucus and transmit information about the odour to the brain in a process called sensory transduction. Olfactory nerves and fibers transmit information about odours from the peripheral olfactory system to the central olfactory system of the brain. The main olfactory bulb transmits pulses to both mitral and tufted cells, which help determine odour concentration. These cells also note differences between highly similar odours and use that data to aid in later recognition. The cells are different with the mitral having low firing-rates and being easily inhibited by neighbouring cells, while tufted have high rates of firing and are more difficult to inhibit. The uncus houses the olfactory cortex which includes the piriform cortex, amygdala, olfactory tubercle, and para-hippocampal gyrus. Entorhinal cortex is an area of middle temporal lobe that has connection with the para-hippocampal gyrus.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      13.2
      Seconds

  • Question 9 - Which receptor type is associated with uterine contracture in pregnancy? ...

    Incorrect

    • Which receptor type is associated with uterine contracture in pregnancy?

      Your Answer: Α2

      Correct Answer: Α1

      Explanation:

      Alpha-1 adrenergic receptors cause uterine contraction during pregnancy. They are linked to Gq-proteins that activate smooth muscle contraction through the IP3 signal transduction pathway.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      4.1
      Seconds

  • Question 10 - Of the daily production of CSF, the vast majority is produced in the:...

    Correct

    • Of the daily production of CSF, the vast majority is produced in the:

      Your Answer: Choroid plexus

      Explanation:

      About 80% of CSF is produced by the choroid plexus. It is also produced by a single layer of column shaped ependymal cells.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      9.7
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Medicine (5/10) 50%
Neurology (5/10) 50%
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