Table of contents
- 1. Introduction to Psychology1h 43m
- 2. Psychology Research2h 20m
- 3. Biological Psychology2h 41m
- 4. Sensation and Perception28m
- 5. Consciousness and Sleep32m
- 6. Learning41m
- 7. Memory34m
- 8. Cognition37m
- 9. Emotion and Motivation35m
- 10. Developmental Psychology33m
- 11. Personality48m
- 12. Social Psychology41m
- 13. Stress and Health41m
- 14. Psychological Disorders44m
- 15. Treatment47m
3. Biological Psychology
The Endocrine System
Struggling with Psychology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Melatonin and thyroxin are examples of
A
neurons.
B
glands.
C
hormones.
D
stem cells.

1
Identify the key terms in the problem: 'Melatonin' and 'Thyroxin'.
Understand that the problem is asking for a classification of these terms.
Recall that 'Melatonin' is a hormone that regulates sleep-wake cycles, and 'Thyroxin' is a hormone produced by the thyroid gland that regulates metabolism.
Recognize that hormones are chemical messengers produced by glands in the endocrine system, which are released into the bloodstream to regulate various bodily functions.
Conclude that both 'Melatonin' and 'Thyroxin' fit the definition of hormones, as they are involved in regulating physiological processes.
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