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The lungs are situated in a thoracic cha...

The lungs are situated in a thoracic chamber which is formed dorsally by the ...a..., yentrally by the ...b..., laterally by the ..c... and on lower side by the ..d...

A

b-sternum, c-diaphragm, a-vertebral column, d-ribs

B

a-sternum, c-diaphragm, b-vertebral column, d-ribs

C

b-sternum, d-diaphragm, a-vertebral column, c-ribs

D

d-sternum, c-diaphragm, a-vertebral column, b-ribs

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question regarding the thoracic chamber and its formation, we need to identify the structures that form the boundaries of the thoracic cavity. Here’s a step-by-step breakdown: 1. **Identify the dorsal boundary (a)**: The term "dorsally" refers to the back side of the thoracic chamber. The structure that forms this boundary is the **vertebral column** (spine). Therefore, for blank (a), the answer is **vertebral column**. 2. **Identify the ventral boundary (b)**: The term "ventrally" refers to the front side of the thoracic chamber. The structure that forms this boundary is the **sternum** (breastbone). Thus, for blank (b), the answer is **sternum**. 3. **Identify the lateral boundary (c)**: The term "laterally" refers to the sides of the thoracic chamber. The structures that form this boundary are the **ribs**. Therefore, for blank (c), the answer is **ribs**. 4. **Identify the lower boundary (d)**: The lower side of the thoracic chamber is formed by the **diaphragm**, which is a muscular structure that separates the thoracic cavity from the abdominal cavity. Thus, for blank (d), the answer is **diaphragm**. Putting it all together, we have: - (a) vertebral column - (b) sternum - (c) ribs - (d) diaphragm **Final Answer**: The lungs are situated in a thoracic chamber which is formed dorsally by the **vertebral column**, ventrally by the **sternum**, laterally by the **ribs**, and on the lower side by the **diaphragm**. ---
To answer the question regarding the thoracic chamber and its formation, we need to identify the structures that form the boundaries of the thoracic cavity. Here’s a step-by-step breakdown: 1. **Identify the dorsal boundary (a)**: The term "dorsally" refers to the back side of the thoracic chamber. The structure that forms this boundary is the **vertebral column** (spine). Therefore, for blank (a), the answer is **vertebral column**. 2. **Identify the ventral boundary (b)**: The term "ventrally" refers to the front side of the thoracic chamber. The structure that forms this boundary is the **sternum** (breastbone). Thus, for blank (b), the answer is **sternum**. 3. **Identify the lateral boundary (c)**: The term "laterally" refers to the sides of the thoracic chamber. The structures that form this boundary are the **ribs**. Therefore, for blank (c), the answer is **ribs**. ...
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