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Questions and Answers
Which nerves compose the brachial plexus?
Which nerves compose the brachial plexus?
- Anterior branches of four inferior cervical nerves and the greater part of first thoracic nerve (correct)
- Anterior branches of five inferior cervical nerves and the greater part of first thoracic nerve
- Posterior branches of four inferior cervical nerves and the greater part of first thoracic nerve
- Anterior branches of three inferior cervical nerves and the greater part of second thoracic nerve
Where does the brachial plexus pass through?
Where does the brachial plexus pass through?
- Space between the scalenus anterior and scalenus medius into the infraclavicular fossa
- Space between the scalenus posterior and scalenus medius into the supraclavicular fossa
- Space between the scalenus posterior and scalenus medius into the infraclavicular fossa
- Space between the scalenus anterior and scalenus medius into the supraclavicular fossa (correct)
How many thick nerve trunks arise from the brachial plexus?
How many thick nerve trunks arise from the brachial plexus?
- Three (correct)
- Four
- Two
- Five
What are the two parts usually distinguished in the brachial plexus?
What are the two parts usually distinguished in the brachial plexus?
What do the short branches of the brachial plexus supply?
What do the short branches of the brachial plexus supply?
Which muscles do the short branches of the brachial plexus supply?
Which muscles do the short branches of the brachial plexus supply?
Which nerves compose the brachial plexus?
Which nerves compose the brachial plexus?
Where does the brachial plexus pass through?
Where does the brachial plexus pass through?
How many thick nerve trunks arise from the brachial plexus?
How many thick nerve trunks arise from the brachial plexus?
What are the two parts usually distinguished in the brachial plexus?
What are the two parts usually distinguished in the brachial plexus?
Flashcards
Brachial plexus composition
Brachial plexus composition
Anterior branches of four inferior cervical nerves and the first thoracic nerve.
Brachial plexus passage location
Brachial plexus passage location
Passes through the space between the scalenus anterior and scalenus medius into the supraclavicular fossa.
Number of nerve trunks in brachial plexus
Number of nerve trunks in brachial plexus
Three thick nerve trunks arise from the brachial plexus.
Parts of the brachial plexus
Parts of the brachial plexus
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Short branches of the brachial plexus
Short branches of the brachial plexus
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Muscles supplied by short branches
Muscles supplied by short branches
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Inferior cervical nerves
Inferior cervical nerves
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First thoracic nerve
First thoracic nerve
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Supraclavicular fossa
Supraclavicular fossa
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Function of brachial plexus
Function of brachial plexus
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Study Notes
Brachial Plexus Composition
- The brachial plexus is composed of the roots of spinal nerves C5-C8 and T1.
Brachial Plexus Pathway
- The brachial plexus passes through the posterior triangle of the neck and the axillary region.
Brachial Plexus Structure
- Three thick nerve trunks arise from the brachial plexus: the superior trunk (C5-C6), the middle trunk (C7), and the inferior trunk (C8-T1).
- The brachial plexus is usually divided into two parts: the supraclavicular part (roots and trunks) and the infraclavicular part (divisions, cords, and branches).
Brachial Plexus Functions
- The short branches of the brachial plexus supply the shoulder joint and the surrounding muscles.
- The short branches of the brachial plexus supply the following muscles: subclavius, pectoralis minor, and serratus anterior.
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