Cardiovascular System in Human Physiology
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Questions and Answers

Which part of the cardiovascular system mainly depends on pressure gradient for blood flow?

  • Pulmonary capillaries
  • Large arteries
  • Arterioles (correct)
  • Venules
  • The electrical conduction pathway in the heart goes from the SA node to the ventricular myocardium through which of the following?

  • Right & left bundle branches
  • His bundle
  • AV node
  • Purkinje network (correct)
  • Which of the following is responsible for recording the electrical activity in the frontal plane in an electrocardiogram?

  • Lead I (correct)
  • Lead II
  • Lead III
  • Wilson's central terminal
  • Which part of the heart has the highest intrinsic pacemaker rate?

    <p>Right atrium</p> Signup and view all the answers

    In the limb lead system for electrocardiogram, where is the negative electrode placed for lead III?

    <p>Left leg (LL)</p> Signup and view all the answers

    What is responsible for conducting signals from the AV node to the right and left bundle branches in the heart?

    <p>His bundle</p> Signup and view all the answers

    Which part of the cardiovascular system acts as a pressure storer?

    <p>Aorta</p> Signup and view all the answers

    Where is Wilson's central terminal located in the body for recording chest leads in an electrocardiogram?

    <p>Midline between V2 &amp; V4</p> Signup and view all the answers

    What is responsible for conducting signals from atrial myocardium to the AV node in the heart?

    <p>His bundle</p> Signup and view all the answers

    In which part of the cardiovascular system does blood mainly depend on atrial contraction to move to ventricles?

    <p>Pulmonary vein</p> Signup and view all the answers

    In an electrocardiogram, which lead records the electrical activity in both frontal and horizontal planes?

    <p>Wilson's central terminal</p> Signup and view all the answers

    What is responsible for conducting signals from atrial myocardium to AV node and then to bundle branches in the heart?

    <p>Nodal tissue</p> Signup and view all the answers

    Which part of the brain is associated with personality and behavior changes after injury?

    <p>Prefrontal cortex</p> Signup and view all the answers

    Which part of the brain is primarily responsible for issues with attention, focus, and behavior in children with ADHD?

    <p>Prefrontal cortex</p> Signup and view all the answers

    Which neurotransmitter is predominantly found in the neocortex?

    <p>Dopamine</p> Signup and view all the answers

    Which layer of the neocortex is an important origin of cortical efferent fibers targeting thalamic nuclei?

    <p>Layer IV</p> Signup and view all the answers

    Which type of cortical fibers provides input to the thalamus from the cortex?

    <p>Corticothalamic afferent fiber</p> Signup and view all the answers

    Which cells in the neocortex make important contributions to EEG through their reciprocal interconnections?

    <p>Pyramidal cells in layer V</p> Signup and view all the answers

    What is responsible for detecting the electrical field generated by large groups of distant neurons in the brain?

    <p>Electroencephalogram (EEG)</p> Signup and view all the answers

    On which part of the body would electrodes be placed to perform an Electrocorticogram (ECoG)?

    <p>Brain surface</p> Signup and view all the answers

    Which part of the brain is responsible for recording neural electrical activity using Electroencephalogram (EEG)?

    <p>Frontal lobe</p> Signup and view all the answers

    What type of cells make up approximately 75% of the neocortex?

    <p>Pyramidal cells</p> Signup and view all the answers

    What is the main function of the prefrontal cortex?

    <p>Controlling personality, attention, and motivation</p> Signup and view all the answers

    Which area of the brain is responsible for language comprehension and speech production?

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

    What happens when there is a lesion in Wernike’s area of the brain?

    <p>Aphasia and impaired understanding of language</p> Signup and view all the answers

    Which part of the brain is primarily involved in visual processing and perception?

    <p>Occipital lobe</p> Signup and view all the answers

    What is the main function of the limbic system in the brain?

    <p>Regulate autonomic nervous system</p> Signup and view all the answers

    What is the primary function of the frontal eye field in the brain?

    <p>Assist in eye movements</p> Signup and view all the answers

    Which part of the brain is crucial for hearing processing and perception?

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

    What role does the hippocampal formation play in the brain?

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

    What function does Broca’s area serve in the brain?

    <p>Generating speech</p> Signup and view all the answers

    What is damaged when there is a lesion in Wernicke’s area of the brain?

    <p>Difficulty in language comprehension</p> Signup and view all the answers

    How does a lesion in Broca’s area affect an individual?

    <p>Impaired speech production</p> Signup and view all the answers

    What is the main function of the hippocampal formation?

    <p>Maintaining learning and memory</p> Signup and view all the answers

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