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

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Multiple Choice

Which of the following would NOT inhibit micturition?

Activation of the parasympathetic nervous system

Increased sympathetic nervous system activity

Stimulation of the pontine storage center

Contraction of the external urethral sphincter

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Verified step by step guidance

Understand the process of micturition: Micturition is the act of urination, controlled by the coordination of the nervous system and muscles. It involves the parasympathetic nervous system, sympathetic nervous system, and somatic control of the external urethral sphincter.

Review the role of the parasympathetic nervous system: The parasympathetic nervous system promotes bladder contraction and relaxation of the internal urethral sphincter, facilitating micturition. Activation of this system would encourage urination, not inhibit it.

Examine the role of the sympathetic nervous system: The sympathetic nervous system inhibits micturition by relaxing the bladder wall and contracting the internal urethral sphincter, preventing urine flow.

Analyze the function of the pontine storage center: The pontine storage center in the brainstem inhibits micturition by promoting storage of urine. It does so by coordinating the contraction of the external urethral sphincter and inhibiting parasympathetic activity.

Consider the contraction of the external urethral sphincter: The external urethral sphincter is under voluntary control and its contraction prevents urine from leaving the bladder, thereby inhibiting micturition.