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Multiple Choice
Which of the following muscles is located on the anterior side of the upper arm?
A
Triceps brachii
B
Flexor digitorum superficialis
C
Biceps brachii
D
Extensor carpi radialis
Verified step by step guidance
1
Step 1: Understand the anatomical location of the upper arm. The upper arm is the region between the shoulder and the elbow, and muscles in this area are responsible for movements such as flexion and extension of the elbow joint.
Step 2: Identify the anterior side of the upper arm. The anterior side refers to the front-facing portion of the arm when in anatomical position (palms forward). Muscles located here are typically involved in flexion of the elbow.
Step 3: Review the functions and locations of the listed muscles:
- Triceps brachii: Located on the posterior side of the upper arm, responsible for elbow extension.
- Flexor digitorum superficialis: Located in the forearm, responsible for flexing the fingers.
- Biceps brachii: Located on the anterior side of the upper arm, responsible for elbow flexion and supination of the forearm.
- Extensor carpi radialis: Located in the forearm, responsible for wrist extension.
Step 4: Match the muscle that is located on the anterior side of the upper arm. Based on the anatomical location and function, the biceps brachii is the correct muscle located on the anterior side of the upper arm.
Step 5: Confirm your understanding by visualizing or referencing an anatomical diagram of the upper arm to see the placement of the biceps brachii on the anterior side.