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

7. The Skeletal System

Bone of the Lower Limb

Anatomy & Physiology

7. The Skeletal System

Bone of the Lower Limb

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3:13 minutes

Problem 8

Textbook Question

What is the name of the flexible sheet that interconnects the radius and ulna (and the tibia and fibula)?

Verified step by step guidance

Understand that the radius and ulna are bones in the forearm, while the tibia and fibula are bones in the lower leg. Both pairs of bones are connected by a flexible sheet of connective tissue.

Recognize that this flexible sheet is a type of fibrous joint known as an interosseous membrane, which provides stability and allows for slight movement between the bones.

Learn that the interosseous membrane is composed of dense connective tissue, specifically collagen fibers, which resist tension and help distribute forces between the bones.

Note that the interosseous membrane also serves as an attachment site for muscles and helps separate compartments within the forearm and leg.

Remember that the interosseous membrane is crucial for maintaining the functional relationship between the radius and ulna in the forearm, and the tibia and fibula in the lower leg, enabling coordinated movement and force transmission.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Interosseous Membrane

The interosseous membrane is a fibrous sheet that connects two long bones in the body, specifically the radius and ulna in the forearm, and the tibia and fibula in the leg. This membrane serves as a site for muscle attachment and helps stabilize the bones during movement, allowing for effective force transmission and coordination between the paired bones.

Anatomical Position

The anatomical position is a standard reference point used in anatomy to describe the location and orientation of body parts. In this position, the body is standing upright, facing forward, with arms at the sides and palms facing forward. Understanding this position is crucial for accurately describing the relationships between the radius, ulna, tibia, and fibula.

Fibrous Joint

A fibrous joint is a type of joint where bones are connected by dense connective tissue, allowing for little to no movement. The interosseous membrane is an example of a fibrous joint, as it provides stability and support between the radius and ulna, as well as the tibia and fibula, while still permitting some degree of movement necessary for limb function.

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Related Practice

Textbook Question

Match the bone markings listed on the right with their function listed on the left.

1. Attachment site for muscle or ligament

2. Forms a joint surface

3. Passageway for vessels or nerves

a. Trochanter

366

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Multiple Choice

Which of the following is a leg bone that bears the most weight?

153

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Textbook Question

The tarsal bone that transfers and distributes weight to the heel or toes is the:

(a) Cuneiform

(b) Calcaneus

(d) Navicular

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Textbook Question

Why is the tibia, but not the fibula, involved in the transfer of weight to the ankle and foot?

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Textbook Question

Which seven bones make up the ankle (tarsus)?

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Multiple Choice

With which bones does the femur articulate?

The structure of the upper limbs (the arms) and the lower limbs (the legs) follow a similar pattern. Which of the following statements comparing the limbs is not accurate?

How do the metatarsals contribute to the foot's ability to bear weight?

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