Chronobiology and Circadian Rhythms Practice Questions

Question 1

Clang associations are primarily associated with which of the following conditions?

Accepted Answer

Mania

Answer

Depressive disorder

Answer

Psychotic disorder

Answer

Anxiety disorder

Question 2

Match List-I with List-II and select the correct answer using the code given below the Lists:

Accepted Answer

A→2  B→1  C→4  D→3

Answer

A→4  B→1  C→3  D→2

Answer

A→3  B→4  C→1  D→2

Answer

A→1  B→2  C→3  D→4

Question 3

Berger waves (alpha waves) of EEG have a rhythm of how many Hz?

Accepted Answer

8-13 Hz

Answer

0-4 Hz

Answer

4-7 Hz

Answer

13-30 Hz

Question 4

What is the mechanism of metabolism for alcohol, aspirin, and phenytoin at high doses?

Accepted Answer

Zero order kinetics

Answer

First pass kinetics

Answer

First order kinetics

Answer

Second order kinetics

Question 5

What is the primary function of the paraventricular and supraoptic nuclei?

Accepted Answer

Regulate water balance.

Answer

All of the options.

Answer

Destruction can lead to diabetes insipidus.

Answer

Are located in the anterior pituitary.

Question 6

Which of the following drugs should be given in a sustained-release oral dosage form?

Accepted Answer

An antihypertensive with a plasma half-life of 3 hours

Answer

An anti-arrhythmic drug with a plasma half life of 10 seconds used for acute treatment of PSVT

Answer

Anti inflammatory drugs with the plasma half life of 24 hours

Answer

Hypnotic drugs with a plasma half life of 2 hours

Question 7

Melatonin is secreted by

Accepted Answer

Pineal gland

Answer

Melanocytes

Answer

Hypothalamus

Answer

Adrenal cortex

Question 8

What is the body's first physiological response to hypoglycemia?

Accepted Answer

Decreased insulin

Answer

Increased glucagon

Answer

Increased cortisol

Answer

Increased norepinephrine

Question 9

Which hormone, together with the catecholamines, enhances the tone of vascular smooth muscle and assists in elevating blood pressure?

Accepted Answer

Cortisol

Answer

Parathyroid hormone (PTH)

Answer

Glucagon (GCG)

Answer

Thyroxine (T4)

Question 10

Insulin-like growth factor is secreted by:

Accepted Answer

Liver

Answer

Pituitary gland

Answer

Pancreas

Answer

Adrenal glands

Chronobiology and Circadian Rhythms

Study Resources

Lessons

Questions

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Lessons

Biological Clock Mechanisms

Suprachiasmatic Nucleus

Circadian Rhythm Generation

Light Entrainment Pathways

Melatonin and Sleep Regulation

Circadian Control of Metabolism

Temperature and Activity Rhythms

Shift Work and Jet Lag Physiology

Circadian Rhythm Disorders

Chronopharmacology

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