객관식
A bullet enters the left lung and collapses it. Which cavity has been entered?
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1. Introduction to Anatomy & Physiology
Organization of the Body: Thoracic Cavity
객관식
Which muscle subdivides the ventral body cavity by separating the thoracic cavity from the abdominopelvic cavity?
A
External intercostal muscles
B
Rectus abdominis
C
Pectoralis major
D
Diaphragm
검증된 단계별 안내1
Step 1: Understand the anatomy of the ventral body cavity, which is divided into two main parts: the thoracic cavity (upper) and the abdominopelvic cavity (lower).
Step 2: Identify the muscle that acts as a physical barrier between these two cavities, playing a crucial role in respiration by contracting and relaxing to change thoracic volume.
Step 3: Recall that the diaphragm is a dome-shaped muscle located at the base of the thoracic cavity, separating it from the abdominopelvic cavity below.
Step 4: Recognize that other muscles listed, such as the external intercostal muscles, rectus abdominis, and pectoralis major, have different locations and functions and do not separate these two cavities.
Step 5: Conclude that the diaphragm is the muscle responsible for subdividing the ventral body cavity by separating the thoracic cavity from the abdominopelvic cavity.
