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Brachial Plexus Anatomy and Function Quiz

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Brachial Plexus Anatomy and Function Quiz

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Questions and Answers

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?

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?

Three (correct)

Four

Two

Five

What are the two parts usually distinguished in the brachial plexus?

Pars supraclavicularis and pars infraclavicularis Signup and view all the answers

What do the short branches of the brachial plexus supply?

Cervical muscles partially, as well as the muscles of the shoulder girdle and the shoulder Signup and view all the answers

Which muscles do the short branches of the brachial plexus supply?

Cervical muscles and shoulder girdle muscles except trapezius Signup and view all the answers

Which nerves compose the brachial plexus?

Inferior cervical nerves and first thoracic nerve Signup and view all the answers

Where does the brachial plexus pass through?

Space between scalenus anterior and scalenus medius Signup and view all the answers

How many thick nerve trunks arise from the brachial plexus?

Three Signup and view all the answers

What are the two parts usually distinguished in the brachial plexus?

Pars supraclavicularis and pars infraclavicularis Signup and view all the answers

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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Description

Test your knowledge of the brachial plexus anatomy and function with this quiz. Identify the nerve branches and their origins, understand the pathway through the supraclavicular fossa, and more. Perfect for medical students and professionals studying neuroanatomy.