#1
Which of the following is NOT a component of the thoracic cage?
Scapula
ExplanationShoulder blade, not part of thoracic cage.
#2
Which of the following muscles is NOT located in the thoracic region?
Rectus abdominis
ExplanationAbdominal muscle, not in thoracic region.
#3
Which structure separates the left and right pleural cavities?
Mediastinum
ExplanationCentral partition between lungs.
#4
Which of the following structures forms the boundary between the superior and inferior mediastinum?
Sternal angle
ExplanationJunction of manubrium and body of sternum.
#5
Which of the following structures is NOT located in the posterior mediastinum?
Trachea
ExplanationWindpipe, located in middle mediastinum.
#6
The superior border of the thoracic cage is formed by which structure?
Clavicles
ExplanationCollarbones form superior border.
#7
Which of the following structures separates the thoracic cavity from the abdominal cavity?
Diaphragm
ExplanationMuscular sheet separating thoracic and abdominal cavities.
#8
The thoracic duct drains lymph into which vein?
Superior vena cava
ExplanationMajor vein receiving lymph from thoracic duct.
#9
Which ribs are considered 'floating ribs'?
Ribs 11-12
ExplanationLast two pairs of ribs, not attaching to sternum.
#10
The thoracic sympathetic chain is part of which nervous system?
Autonomic nervous system
ExplanationControls involuntary bodily functions.
#11
The thoracic spinal nerves innervate which part of the body?
Thorax and abdomen
ExplanationNerves supplying chest and abdominal regions.
#12
Which thoracic vertebrae articulate with the ribs?
T9 to T12
ExplanationThoracic vertebrae where ribs attach.
#13
The costal cartilages connect the ribs to which structure?
Sternum
ExplanationCartilages connecting ribs to breastbone.
#14
The transverse thoracic muscle is also known as:
Subcostal muscle
ExplanationMuscle below ribs, aiding in breathing.
#15
Which of the following structures passes through the esophageal hiatus of the diaphragm?
Esophagus
ExplanationFood pipe passing through diaphragm.
#16
Which ligament connects the first rib to the transverse process of the seventh cervical vertebra?
Superior costotransverse ligament
ExplanationLigament connecting first rib and vertebra.
#17
The thoracic outlet syndrome can occur due to compression of which structure?
All of the above
ExplanationCompression of nerves, arteries, veins in thoracic outlet.