Solved 86 Anatomy & Physiology Coloring Workbook 21. | Chegg.com - Free Printable

Problem Description:

The task is to identify and label the bones and their markings in Figure 5-9 using the provided terms. The figure shows three bones labeled as A, B, and C. The goal is to correctly identify each bone and its specific anatomical features (bone markings) based on the given list of terms.

Given Terms for Labeling:

1. Trochlear notch
2. Capitulum
3. Coronoid process
4. Trochlea
5. Deltoid tuberosity
6. Olecranon process
7. Radial tuberosity
8. Head (three)
9. Greater tubercle
10. Styloid process
11. Lesser tubercle

Solution Approach:

1. Identify the Bones:
- Bone A: This appears to be the humerus (upper arm bone).
- Bone B: This appears to be the radius (one of the forearm bones).
- Bone C: This appears to be the ulna (the other forearm bone).

2. Label the Bone Markings:
- Use the provided terms to match them with the anatomical features visible in the figure.
- Ensure that each term corresponds to the correct location on the respective bone.

Step-by-Step Labeling:

#### Bone A (Humerus):
- Trochlea: The smooth, spool-like structure at the distal end of the humerus.
- Capitulum: The rounded head of the humerus that articulates with the radius.
- Deltoid tuberosity: The roughened area on the lateral side of the humerus where the deltoid muscle attaches.
- Head (three): The proximal end of the humerus, which forms a ball-and-socket joint with the shoulder blade (scapula).

#### Bone B (Radius):
- Radial tuberosity: The roughened area on the proximal end of the radius where muscles attach.
- Styloid process: The pointed projection at the distal end of the radius.

#### Bone C (Ulna):
- Trochlear notch: The curved depression on the proximal end of the ulna that fits over the trochlea of the humerus.
- Coronoid process: The bony projection above the trochlear notch.
- Olecranon process: The prominent bony projection at the proximal end of the ulna, forming the elbow.
- Greater tubercle: The larger of the two tubercles on the proximal end of the ulna.
- Lesser tubercle: The smaller of the two tubercles on the proximal end of the ulna.

Final Labels:

- Bone A (Humerus):
- Trochlea
- Capitulum
- Deltoid tuberosity
- Head (three)

- Bone B (Radius):
- Radial tuberosity
- Styloid process

- Bone C (Ulna):
- Trochlear notch
- Coronoid process
- Olecranon process
- Greater tubercle
- Lesser tubercle

Explanation:

- The humerus (Bone A) is the long bone of the upper arm. Its key features include the trochlea and capitulum for articulation with the forearm bones, the deltoid tuberosity for muscle attachment, and the head for the shoulder joint.
- The radius (Bone B) is one of the forearm bones. Its main features are the radial tuberosity for muscle attachment and the styloid process at the distal end.
- The ulna (Bone C) is the other forearm bone. It has the trochlear notch and coronoid process for articulation with the humerus, the olecranon process forming the elbow, and the greater and lesser tubercles for muscle attachments.

Final Answer:

\[
\boxed{
\text{Bone A: Humerus (Trochlea, Capitulum, Deltoid tuberosity, Head)} \\
\text{Bone B: Radius (Radial tuberosity, Styloid process)} \\
\text{Bone C: Ulna (Trochlear notch, Coronoid process, Olecranon process, Greater tubercle, Lesser tubercle)}
}
\]