Neuroscience: Motor Cortex Location
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Questions and Answers

Where is the primary motor cortex located?

  • Postcentral gyrus
  • Precentral gyrus (correct)
  • Superior temporal gyrus
  • Calcarine sulcus

Which of the following functions is associated with the prefrontal cortex?

  • Motor control of voluntary movements
  • Planning and decision-making (correct)
  • Sensory processing from the body
  • Auditory processing

The primary visual cortex is located in which lobe of the brain?

  • Parietal lobe
  • Temporal lobe
  • Occipital lobe (correct)
  • Frontal lobe

Which of the following is the function of the somatic sensory cortex?

<p>Processing of touch, pressure, pain, and temperature (A)</p> Signup and view all the answers

Which sulcus separates the frontal and parietal lobes?

<p>Central sulcus (C)</p> Signup and view all the answers

Where is the olfactory cortex located?

<p>Temporal lobe (B)</p> Signup and view all the answers

Which of the following fiber types interconnect cortical areas within the same cerebral hemisphere?

<p>Association fibers (C)</p> Signup and view all the answers

What is the primary function of projection fibers in the brain?

<p>Passing signals between cerebral cortex and subcortical structures (B)</p> Signup and view all the answers

Which of the following fibers run from one cerebral hemisphere to the other?

<p>Commissural fibers (C)</p> Signup and view all the answers

Which type of fiber is responsible for transmitting motor commands from the brain to the spinal cord?

<p>Projection fibers (B)</p> Signup and view all the answers

Which of the following is a role of association fibers?

<p>To connect different cortical areas within the same hemisphere (C)</p> Signup and view all the answers

Broca's area is associated with which type of aphasia?

<p>Motor aphasia (B)</p> Signup and view all the answers

Which of the following is a characteristic feature of Broca's aphasia?

<p>Speech is labored and words are missing (B)</p> Signup and view all the answers

Which of the following is typically seen in Wernicke's aphasia?

<p>Auditory incomprehension and confusion of words (C)</p> Signup and view all the answers

In Broca's aphasia, which additional problem is often observed besides speech difficulties?

<p>Agraphia (difficulty writing) (B)</p> Signup and view all the answers

What is the effect of a large lesion in Broca's area?

<p>Complete inability to speak (B)</p> Signup and view all the answers

The lateral ventricles of the brain are shaped like:

<p>A C-shape with a posterior spur (B)</p> Signup and view all the answers

Which of the following structures is involved in the production of cerebrospinal fluid (CSF)?

<p>Choroid plexus (B)</p> Signup and view all the answers

Which of the following structures is located in the floor of the third ventricle?

<p>All of the above (D)</p> Signup and view all the answers

The anterior boundary of the third ventricle is formed by which structure?

<p>Lamina terminalis (B)</p> Signup and view all the answers

Where is the pineal gland located?

<p>In the epithalamus, just above the superior colliculus (B)</p> Signup and view all the answers

What is the primary function of the pineal gland?

<p>Both B and C (D)</p> Signup and view all the answers

The interthalamic adhesion connects:

<p>The right and left thalamus (B)</p> Signup and view all the answers

The posterior part of the thalamus is known as the:

<p>Pulvinar (A)</p> Signup and view all the answers

Which part of the thalamus is responsible for the auditory relay?

<p>Medial geniculate body (C)</p> Signup and view all the answers

Which structure in the thalamus is responsible for visual relay?

<p>Lateral geniculate body (C)</p> Signup and view all the answers

Where is the medial geniculate body located in relation to the lateral geniculate body?

<p>Below the lateral geniculate body (C)</p> Signup and view all the answers

Which part of the thalamus is involved in the auditory relay?

<p>Medial geniculate body (C)</p> Signup and view all the answers

The lateral geniculate body is primarily responsible for relaying which type of information?

<p>Visual information (A)</p> Signup and view all the answers

Which sensory pathway is responsible for touch and proprioception?

<p>Dorsal columns (B)</p> Signup and view all the answers

What is the primary function of the cingulate gyrus?

<p>Involved in the limbic system, regulating emotions and behavior (C)</p> Signup and view all the answers

Which sulcus separates the frontal and parietal lobes from the cingulate gyrus?

<p>Cingulate sulcus (B)</p> Signup and view all the answers

What structure lies directly beneath the cingulate gyrus?

<p>Corpus callosum (A)</p> Signup and view all the answers

What is the role of the septum pellucidum?

<p>It separates the lateral ventricles from each other. (B)</p> Signup and view all the answers

The hippocampus is primarily associated with which function?

<p>Learning and memory (C)</p> Signup and view all the answers

Which structure connects the hippocampus to other parts of the brain, including the septum pellucidum?

<p>Fornix (B)</p> Signup and view all the answers

Which structure in the limbic system is responsible for processing emotions and behavior regulation?

<p>Cingulate gyrus (B)</p> Signup and view all the answers

What is the primary function of the corpus callosum?

<p>Connecting the two hemispheres of the brain (A)</p> Signup and view all the answers

Which of the following is true about the septum pellucidum?

<p>It is a double fold of membrane that separates the lateral ventricles. (C)</p> Signup and view all the answers

Which sensory pathway is responsible for touch and proprioception?

<p>Dorsal columns (B)</p> Signup and view all the answers

Where does the spinothalamic tract decussate?

<p>Immediately after entering the spinal cord (B)</p> Signup and view all the answers

Which of the following is responsible for the sensation of pain and temperature?

<p>Spinothalamic tract (B)</p> Signup and view all the answers

What clinical feature is associated with a thalamic lesion?

<p>Contralateral hemianaesthesia with thalamic pain (A)</p> Signup and view all the answers

Which pathway decussates in the medulla?

<p>Dorsal columns (B)</p> Signup and view all the answers

In which part of the brain does the spinothalamic tract synapse after decussation?

<p>Thalamus (C)</p> Signup and view all the answers

Which sensory pathway carries information related to temperature and pain from the body to the thalamus?

<p>Spinothalamic tract (B)</p> Signup and view all the answers

What is the consequence of damage to the dorsal columns?

<p>Loss of proprioception and touch (C)</p> Signup and view all the answers

Which tract is responsible for the sensory modalities of touch and proprioception from the lower body?

<p>Dorsal columns (C)</p> Signup and view all the answers

What is the term used for the sensation of pain due to a thalamic lesion?

<p>Thalamic pain (A)</p> Signup and view all the answers

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