Drgawad Online Physiology Exams: EEG, Sleep, Thalamus, Hypothalamus, Limbic System

2.

Regarding non-REM sleep, which is false:

Drop of blood pressure
Decrease in heart rate
Dreams are consolidated
Decrease in peripheral vascular tone

Correct Answer

A. Dreams are consolidated

Explanation

During non-REM sleep, dreams are not consolidated. Dreams are more commonly associated with REM (rapid eye movement) sleep, which is a different stage of sleep. Non-REM sleep is characterized by a decrease in heart rate, a drop in blood pressure, and a decrease in peripheral vascular tone.

Rate this question:

3.

Regarding thalamic syndrome, which is true

Loss of epicretic sensations of the same side of the body
The face sensations are markedly affected
Pain is well localized
Pain is following the all or nothing principle

Correct Answer

A. Pain is following the all or nothing principle

Explanation

The statement "pain is following the all or nothing principle" means that in thalamic syndrome, the perception of pain is either completely absent or extremely intense, with no middle ground. This suggests that the thalamus, which is responsible for relaying sensory information to the brain, is not functioning properly. This can result in a loss of epicretic sensations (sensations of touch, pressure, and temperature) on the same side of the body, as well as marked effects on face sensations. However, the statement does not provide any information about the localization of pain or its relationship to the body's midline.

Rate this question:

4.

Regarding hypothalamus function, which is true:

Feeding center is chronically active
Stimulation of anterior hypothalamus increases arousal state
Posterior hypothalamus is concerned with heat loss
Anterior hypothalamus is concerned with sympathetic control

Correct Answer

A. Feeding center is chronically active

Explanation

The statement "feeding center is chronically active" means that the hypothalamus is constantly involved in regulating feeding behavior. The hypothalamus plays a crucial role in controlling appetite and satiety through the release of various hormones and neurotransmitters. It monitors nutrient levels in the body and triggers hunger or fullness signals accordingly. This constant activity of the feeding center ensures that the body's energy needs are met and helps maintain a balance in food intake.

Rate this question:

5.

Regarding hunger control, which is true

Satiety center is chronically active
The main regulator of satiety center activity is the blood amino acids level
Obesity may occur due to destruction of ventromedial nucleus of the hypothalamus
None of the above

Correct Answer

A. Obesity may occur due to destruction of ventromedial nucleus of the hypothalamus

Explanation

The destruction of the ventromedial nucleus of the hypothalamus can lead to obesity. This is because the ventromedial nucleus is responsible for regulating satiety and controlling hunger. When this area is damaged, it can disrupt the normal signaling and feedback mechanisms that regulate food intake, leading to overeating and weight gain.

Rate this question:

6.

Which of the following is considered as a sleeping center:

Locus ceruleus
Anterior hypothalamus
Posterior hypothalamus
Basal forebrain

Correct Answer

A. Anterior hypothalamus

Explanation

The anterior hypothalamus is considered as a sleeping center. It is responsible for regulating sleep and wakefulness. It contains neurons that release inhibitory neurotransmitters, promoting sleep. Stimulation of the anterior hypothalamus can lead to drowsiness and sleep, while damage to this area can cause insomnia.

Rate this question:

7.

Regarding hypothalamic functions, which is true

During Sham rage reaction the activated nucleus is the anterior hypothalamus
Hypothalamus has regulatory control of all endocrinal glands except the ovaries
Ant hypothalamus stimulation causes low heart rate
The weather is raining, so the anterior hypothalamus is active

Correct Answer

A. Ant hypothalamus stimulation causes low heart rate

Explanation

The statement "ant hypothalamus stimulation causes low heart rate" is true. The anterior hypothalamus is involved in regulating the autonomic nervous system, which controls various bodily functions including heart rate. Stimulation of the anterior hypothalamus can lead to a decrease in heart rate.

Rate this question:

Drgawad Online Physiology Exams: EEG, Sleep, Thalamus, Hypothalamus, Limbic System

Regarding REM sleep, which is true:

Quiz Preview

Regarding non-REM sleep, which is false:

Regarding thalamic syndrome, which is true

Regarding hypothalamus function, which is true:

Regarding hunger control, which is true

Which of the following is considered as a sleeping center:

Regarding hypothalamic functions, which is true