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 structures is found within a skeletal muscle?

Myofibril

Neuron

Alveolus

Nephron

Previous problemNext problem

Verified step by step guidance

Step 1: Begin by identifying the primary function and location of each structure listed in the options. For example, a myofibril is a specialized structure found within skeletal muscle cells, while neurons are part of the nervous system, alveoli are found in the lungs, and nephrons are located in the kidneys.

Step 2: Understand the anatomy of skeletal muscle. Skeletal muscle is composed of muscle fibers (cells), which contain myofibrils. Myofibrils are the contractile units responsible for muscle contraction and are made up of repeating sarcomeres.

Step 3: Compare the listed structures to the components of skeletal muscle. Myofibrils are directly involved in the function of skeletal muscle, whereas neurons, alveoli, and nephrons are not part of its structure.

Step 4: Recall the role of myofibrils in muscle contraction. Myofibrils contain actin and myosin filaments that slide past each other during contraction, a process regulated by calcium ions and ATP.

Step 5: Conclude that myofibrils are the correct answer because they are integral to the structure and function of skeletal muscle, unlike the other options which are unrelated to muscle anatomy.