Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following statements about cyclic adenosine monophosphate (cAMP) is false?

cAMP acts as a second messenger in cellular signaling pathways.

cAMP is a primary energy source for cellular activities.

cAMP is synthesized from ATP by the enzyme adenylate cyclase.

cAMP directly activates protein kinase A (PKA).

Previous problemNext problem

Verified step by step guidance

Understand the role of cyclic adenosine monophosphate (cAMP) in cellular signaling. cAMP is known as a second messenger, which means it relays signals received at receptors on the cell surface to target molecules inside the cell.

Recognize that cAMP is synthesized from ATP. The enzyme adenylate cyclase catalyzes the conversion of ATP to cAMP, which is a crucial step in the signaling pathway.

Identify the function of cAMP in activating protein kinase A (PKA). cAMP binds to the regulatory subunits of PKA, causing a conformational change that releases the catalytic subunits, thereby activating the kinase.

Clarify the misconception about cAMP being a primary energy source. Unlike ATP, which is the primary energy currency of the cell, cAMP's role is not to provide energy but to act as a signaling molecule.

Evaluate the statements given in the problem. The false statement is the one that describes cAMP as a primary energy source for cellular activities, which is incorrect as cAMP functions as a second messenger, not an energy source.