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Coma

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Questions and Answers

What is the definition of coma?

A state of decreased consciousness with partial responsiveness to painful stimuli

A state of deep sleep from which the patient can be awakened by painful stimulation

A state of altered consciousness with complete responsiveness to environmental stimuli

A state of loss of consciousness from which the patient cannot be aroused by any stimulation (correct)

Where does the disturbance of consciousness state occur in coma?

Cerebellum

Basal ganglia

Reticular activating system (RAS) or cerebral cortex (correct)

Hippocampus

What is the role of arousal in consciousness?

Arousal is the brain's ability to perceive specific environmental stimuli

Arousal is the awareness and motivation to respond to self and/or environmental events

Arousal is the drive to act upon internal or external stimuli

Arousal is the overall level of responsiveness to environmental stimuli (correct)

What is the definition of consciousness?

<p>Presence of a wakeful arousal state and the awareness and motivation to respond to stimuli</p> Signup and view all the answers

What does RAS stand for in the context of coma?

<p>Reticular activating system</p> Signup and view all the answers

Study Notes

Definition of Coma

Coma is a state of prolonged unconsciousness where a person cannot be awakened and fails to respond to stimuli.

Disturbance of Consciousness in Coma

The disturbance in consciousness during a coma occurs primarily in the brain, affecting both the cerebral hemispheres and the brainstem.

Role of Arousal in Consciousness

Arousal is a crucial component of consciousness, contributing to the awareness of the environment and the ability to respond to it. It is linked to brainstem functions.

Definition of Consciousness

Consciousness is defined as the state of being aware of and able to think about one's own existence, thoughts, and surroundings.

RAS in the Context of Coma

RAS stands for Reticular Activating System, a network of neurons in the brainstem that plays a vital role in regulating arousal and wakefulness.

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Description

Test your knowledge of coma with this quiz. Explore the definition, classification, causes, approach, and management of coma cases. Learn about the factors affecting consciousness and alertness, and the impact of lesions in the Reticular Activating System (RAS) and cerebral cortex.