34 Questions
Which part of the cardiovascular system mainly depends on pressure gradient for blood flow?
Arterioles
The electrical conduction pathway in the heart goes from the SA node to the ventricular myocardium through which of the following?
Purkinje network
Which of the following is responsible for recording the electrical activity in the frontal plane in an electrocardiogram?
Lead I
Which part of the heart has the highest intrinsic pacemaker rate?
Right atrium
In the limb lead system for electrocardiogram, where is the negative electrode placed for lead III?
Left leg (LL)
What is responsible for conducting signals from the AV node to the right and left bundle branches in the heart?
His bundle
Which part of the cardiovascular system acts as a pressure storer?
Aorta
Where is Wilson's central terminal located in the body for recording chest leads in an electrocardiogram?
Midline between V2 & V4
What is responsible for conducting signals from atrial myocardium to the AV node in the heart?
His bundle
In which part of the cardiovascular system does blood mainly depend on atrial contraction to move to ventricles?
Pulmonary vein
In an electrocardiogram, which lead records the electrical activity in both frontal and horizontal planes?
Wilson's central terminal
What is responsible for conducting signals from atrial myocardium to AV node and then to bundle branches in the heart?
Nodal tissue
Which part of the brain is associated with personality and behavior changes after injury?
Prefrontal cortex
Which part of the brain is primarily responsible for issues with attention, focus, and behavior in children with ADHD?
Prefrontal cortex
Which neurotransmitter is predominantly found in the neocortex?
Dopamine
Which layer of the neocortex is an important origin of cortical efferent fibers targeting thalamic nuclei?
Layer IV
Which type of cortical fibers provides input to the thalamus from the cortex?
Corticothalamic afferent fiber
Which cells in the neocortex make important contributions to EEG through their reciprocal interconnections?
Pyramidal cells in layer V
What is responsible for detecting the electrical field generated by large groups of distant neurons in the brain?
Electroencephalogram (EEG)
On which part of the body would electrodes be placed to perform an Electrocorticogram (ECoG)?
Brain surface
Which part of the brain is responsible for recording neural electrical activity using Electroencephalogram (EEG)?
Frontal lobe
What type of cells make up approximately 75% of the neocortex?
Pyramidal cells
What is the main function of the prefrontal cortex?
Controlling personality, attention, and motivation
Which area of the brain is responsible for language comprehension and speech production?
Temporal lobe
What happens when there is a lesion in Wernike’s area of the brain?
Aphasia and impaired understanding of language
Which part of the brain is primarily involved in visual processing and perception?
Occipital lobe
What is the main function of the limbic system in the brain?
Regulate autonomic nervous system
What is the primary function of the frontal eye field in the brain?
Assist in eye movements
Which part of the brain is crucial for hearing processing and perception?
Temporal lobe
What role does the hippocampal formation play in the brain?
Learning and memory
What function does Broca’s area serve in the brain?
Generating speech
What is damaged when there is a lesion in Wernicke’s area of the brain?
Difficulty in language comprehension
How does a lesion in Broca’s area affect an individual?
Impaired speech production
What is the main function of the hippocampal formation?
Maintaining learning and memory
Test your understanding of the electrophysiologic properties, electrocardiography, cardiac cycle, mechanical properties, cardiac output, blood flow, microcirculation, venous return, and control of the cardiovascular system in human physiology.
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