How many divisons does the brachial plexus have?

Question

BlackTom AI · Accepted Answer

Question restated: How many divisions does the brachial plexus have?
Options are: a. 5, b. 3, c. 4, d. 7, e. 6

To evaluate, consider the anatomical organization of the brachial plexus into trunks and divisions. Each of the three trunks (upper, middle, lower) gives rise to two divisions: an anterior division and a posterior division. Therefore, from the three trunks, we obtain 3 x 2 = 6 divisions in total.

Option a: 5. This undercounts the divisions; the standard anatomical model accounts for six divisions, not five, due to the anterior and posterior divisions from each of the three trunks.

Option b: 3. This would reflect only the number of trunks, not the divisions within the trunks. The brachial plexus has more than three divisions when considering the split into anterior and posterior branches.

Option c: 4. This is also inconsistent with the canonical count, which factors in divisions from all three trunks, yielding six divisions in total.

Option d: 7. This overstates the count by one; there is no seventh division in the classic description of the brachial plexus divisions.

Option e: 6. This aligns with the accepted anatomical description: three trunks each give rise to an anterior and a posterior division, totaling six divisions.

How many divisons does the brachial plexus have?

View Explanation

Log in for full answers

Similar Questions

The lateral cord gives rise to which terminal branches of the brachial plexus?

Damage to the medial cord of the brachial plexus would likely weaken which of the following areas?

What part of the brachial plexus does the long thoracic nerve originate from?

The upper limbs are innervated by nerves running to and from the _____.

Question textIdentify A: Answer 1 Question 4[input]Name and action of A: Answer 2 Question 4[input]Identify B: Answer 3 Question 4[input]Identify C: Answer 4 Question 4[input]

Which spinal nerves contribute to the brachial plexus?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler