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

4. Tissues & Histology

Introduction to Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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 is true regarding the cardiac muscle's electrical activity?

The electrical activity of cardiac muscle is independent of ion channels.

Cardiac muscle cells do not have a refractory period.

Cardiac muscle cells rely solely on neural stimulation to contract.

Cardiac muscle cells are capable of spontaneous depolarization.

Previous problemNext problem

Verified step by step guidance

Understand that cardiac muscle cells, also known as cardiomyocytes, have unique properties that allow them to generate electrical impulses without external stimuli.

Recognize that the electrical activity in cardiac muscle is dependent on ion channels, specifically the movement of ions such as sodium (Na+), potassium (K+), and calcium (Ca2+) across the cell membrane.

Learn that cardiac muscle cells have a refractory period, which is a phase during which the cells cannot be re-excited immediately after an action potential, ensuring proper timing of contractions.

Acknowledge that cardiac muscle cells do not rely solely on neural stimulation; they have intrinsic pacemaker cells, such as those in the sinoatrial (SA) node, that can spontaneously depolarize and initiate a heartbeat.

Conclude that the correct statement is that cardiac muscle cells are capable of spontaneous depolarization, allowing them to generate their own electrical impulses and maintain a regular heartbeat.