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

Since I can't view images directly, I’ll help you solve the problem based on your description of Figure 5-11 from *Chapter 5: The Skeletal System*, which shows the articulated pelvis. Below is a detailed explanation and solution for both questions.

---

Question 25: Figure 5-11 – Articulated Pelvis

#### Part A: Identify Bones and Color Coding Circles
You are asked to:
- Identify the bones labeled by leader lines.
- Use different colors to color-code the following structures:
- Coxal bone
- Pubic symphysis
- Sacrum
- Acetabulum

> ✔ Key Structures in the Pelvis:
- Coxal bone: Each half of the pelvic girdle (made up of ilium, ischium, and pubis fused together). It forms the hip bone.
- Pubic symphysis: The joint between the two pubic bones at the front of the pelvis.
- Sacrum: The triangular bone at the base of the spine, formed by fused sacral vertebrae.
- Acetabulum: The socket of the hip joint where the femur head articulates.

> 🔹 Coloring Instructions:
- Assign a unique color to each structure and use that color to fill in the corresponding coding circle and label the parts on the diagram.

#### Part B: Label Bone Markings
Label the following structures on the figure:
1. Obturator foramen
2. Iliac crest
3. Anterior superior iliac spine
4. Ischial spine
5. Pubic ramus
6. Pelvic brim

> ✔ Anatomy Guide:
- Obturator foramen: Large opening in the inferior part of the coxal bone, below the acetabulum; allows passage of nerves and blood vessels.
- Iliac crest: The upper curved edge of the ilium; you can feel it along your hips.
- Anterior superior iliac spine (ASIS): Prominent bony projection at the front top of the hip; often used as a landmark.
- Ischial spine: Projecting bone located on the posterior side of the ischium, between the greater and lesser sciatic notches.
- Pubic ramus: The horizontal bar of bone extending from the pubic body to the ischium (superior and inferior rami).
- Pelvic brim: The superior margin of the true pelvis, formed by the pectineal line of the pubis and the arcuate line of the ilium (dashed line shown in the figure).

> 📌 Dashed Line: This indicates the pelvic brim, which separates the false pelvis (above) from the true pelvis (below). The true pelvis is the space below the brim where the birth canal lies.

#### Part C: Differences Between Male and Female Pelvis
List three ways the female pelvis differs from the male pelvis:

✔ Answer:
1. Wider and more circular pelvic inlet – Allows passage of the baby during childbirth.
2. Greater angle of the pubic arch – In females, the angle is wider (~90–100°), compared to males (~70°).
3. Shallower and broader sciatic notch – The notch is wider in females to accommodate the larger birth canal.

> Additional differences include:
- Less prominent sacral promontory in females
- Broader and shorter ischial spines
- More rounded and flared ilia (wider hips)

---

Question 26: Circle the Term That Does Not Belong

Identify the term that does not belong in each group.

1. Tibia, Ulna, Fibula, Femur
- ✘ Ulna → belongs to the forearm (upper limb)
- Tibia, Fibula, Femur → all lower leg/leg bones
- ✔ Answer: Ulna

2. Skull, Rib cage, Vertebral column, Pelvis
- All are parts of the axial skeleton except...
- ✘ Pelvis → part of the appendicular skeleton
- Skull, rib cage, vertebral column → axial skeleton
- ✔ Answer: Pelvis

3. Ischium, Scapula, Ilium, Pubis
- Ischium, Ilium, Pubis → parts of the coxal bone (hip bone)
- ✘ Scapula → shoulder blade, part of the pectoral girdle
- ✔ Answer: Scapula

4. Mandible, Frontal bone, Temporal bone, Occipital bone
- All are cranial or facial bones
- ✘ Mandible → only movable bone of the skull; but still part of the skull
- Wait — actually, all four are skull bones, so let's check:
- Mandible: lower jaw
- Frontal: forehead
- Temporal: sides of skull
- Occipital: back of skull
- ✔ All belong! But if we're thinking about cranial vs. facial bones, then:
- Mandible is a facial bone, while others are cranial bones
- So, depending on context, Mandible may be the odd one out if grouping by "cranial bones"
- ✔ Answer: Mandible (as it’s not a cranial bone)

5. Calcaneus, Tarsals, Carpals, Talus
- Calcaneus and Talus → tarsal bones
- Tarsals → group of seven bones in the ankle
- Carpals → wrist bones (in hand)
- ✘ Carpals → not in the foot
- ✔ Answer: Carpals

---

✔ Final Answers:

#### Question 25:
- Color Coding:
- Coxal bone → color the entire hip bone (ilium, ischium, pubis)
- Pubic symphysis → midline joint between pubic bones
- Sacrum → triangular bone at back
- Acetabulum → socket on lateral side of hip bone

- Labeling:
1. Obturator foramen
2. Iliac crest
3. Anterior superior iliac spine
4. Ischial spine
5. Pubic ramus
6. Pelvic brim (dashed line)

- Three Differences (Female vs. Male Pelvis):
1. Wider pelvic inlet
2. Greater pubic arch angle
3. Broader sciatic notch

#### Question 26:
1. Ulna
2. Pelvis
3. Scapula
4. Mandible
5. Carpals

---

Let me know if you'd like a labeled version or a diagram guide!