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 best describes the function of ascending tracts in the spinal cord?

They control voluntary muscle contractions in the limbs.

They transmit motor commands from the brain to the body.

They carry sensory information to the brain.

They regulate hormone secretion from endocrine glands.

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Verified step by step guidance

Understand the structure and function of the spinal cord: The spinal cord is a vital part of the central nervous system (CNS) that facilitates communication between the brain and the rest of the body. It contains both ascending and descending tracts.

Define ascending tracts: Ascending tracts are bundles of nerve fibers in the spinal cord that carry sensory information from the peripheral nervous system (e.g., skin, muscles, and organs) to the brain for processing.

Differentiate ascending tracts from descending tracts: Ascending tracts are responsible for transmitting sensory signals (e.g., touch, pain, temperature), while descending tracts carry motor commands from the brain to the body to control voluntary movements.

Identify the correct function: Based on the definition, ascending tracts are specifically involved in carrying sensory information to the brain, which allows the brain to interpret stimuli from the environment and the body.

Eliminate incorrect options: The other options describe functions of descending tracts (motor control), endocrine regulation (hormone secretion), or voluntary muscle contractions, none of which are related to the sensory role of ascending tracts.