Thoracic Vertebrae
This is the number of thoracic vertebrae in the human spine.
What is 12?
This is the total number of ribs in the human body.
What is 24 (or 12 pairs)?
These muscles are the most superficial layer between ribs and assist with inspiration.
What are the external intercostal muscles?
This is the name of the serous membrane that lines the thoracic cavity and covers the lungs.
What is the pleura?
These vertebrae have a ----- shaped body.
What is heart?
These ribs are directly attached to the sternum via their own costal cartilage.
What are true ribs?
These muscles lie just deep to the external intercostals and help with forced expiration.
What are the internal intercostal muscles?
The name of the layer of the pleura that covers the lungs.
What is the visceral pleura?
These vertebrae have costal facets for articulation with this type of skeletal structure.
What are floating ribs?
The intercostal muscles are innervated by these nerves, which are the anterior rami of thoracic spinal nerves.
What are intercostal nerves (T1-T11)?
This layer of the pleura lines the internal surface of the thoracic wall.
What is the parietal pleura?
Each thoracic vertebra articulates with ribs at two points called the costal facet and this.
What is the transverse costal facet?
This rib is short, sharply curved, and has a single facet on its head for articulation with T1.
What is the 1st rib?
These muscles lie deep to the internal intercostals and assist with forced expiration by depressing the ribs.
What are the innermost intercostal muscles?
Space located between the parietal and visceral layers.
What is the pleural cavity?
The costovertebral joint is formed between the head of a rib and these specific parts of two adjacent thoracic vertebrae.
What are the superior costal facet of the corresponding vertebra and the inferior costal facet of the vertebra above?
These neck muscles elevate the first and second ribs during forced inspiration and are innervated by the cervical spinal nerves.
What are the scalenes (anterior, middle, and posterior)?
The pleural cavity is filled with this fluid.
What is serous fluid?