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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and 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 muscle is primarily responsible for allowing a person to stand on their tiptoes?

Tibialis anterior

Rectus femoris

Biceps brachii

Gastrocnemius

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the action described in the problem. Standing on tiptoes involves plantar flexion, which is the movement of pointing the toes downward and lifting the heel off the ground.

Step 2: Identify the muscle group responsible for plantar flexion. The primary muscles involved in this action are located in the posterior compartment of the lower leg, specifically the calf muscles.

Step 3: Focus on the gastrocnemius muscle. The gastrocnemius is a large, superficial muscle in the calf that plays a key role in plantar flexion. It works in conjunction with the soleus muscle to lift the heel during tiptoe standing.

Step 4: Eliminate the incorrect options. The tibialis anterior is responsible for dorsiflexion (lifting the toes upward), the rectus femoris is part of the quadriceps group and primarily extends the knee, and the biceps brachii is a muscle of the upper arm involved in elbow flexion.

Step 5: Conclude that the gastrocnemius is the correct answer because it is the primary muscle responsible for plantar flexion, allowing a person to stand on their tiptoes.