Starting and ending points and functions of biceps

The biceps are located on the front side of our arm. They are the most conspicuous muscles on the arm and are also the most popular training part for men in the gym. Recall that when you first tried to exercise your muscles, most people always accidentally picked up dumbbells to curl. Although you may not know the name of this action at that time

The development and strength of the biceps will make you look strong from the first glance. We have also introduced many methods and techniques for training the biceps. Today we will take you to understand the biceps from an anatomical perspective, understand its shape, position and function. This will better help you understand the biceps and train better!

Biceps

Position: shallow layer in front of the upper arm

Model: fusiformis, with long and short biceps

Start point : Long head - suprapidotubula tuberculosis

Short head - scapula coracoid process

Stop point: radial trochondrance and forearm fascia

Function:

From the anatomical position, the biceps brachii are divided into two heads and cross two joints, mainly responsible for the movement of the elbow and shoulder joints

The outer side is the long head (marked green), and the medial side is the short head. In addition to the different lengths of these two heads, the proximal attachment points are also different, so there are some differences in function.

The least known function of the biceps brachii is the flexion of the elbow joint, and the external rotation of the forearm

In addition to the flexion of the elbow and external rotation of the forearm, because the starting and ending points of the biceps span the shoulder joint, the biceps can also perform shoulder joint movement

Including: shoulder flexion, shoulder abduction, horizontal adduction

Shoulder flexion (long head and short heads are both Participate)

Shoulder abduction (long head)

Shoulder horizontal adduction (short head)

The shoulder joint bends and short heads will participate, shoulder abduction is exclusive to long heads (related to the direction of long heads), and horizontal adduction is exclusive to short heads (related to the starting point and end point of short heads)

The most effective classic movements for training biceps include: multi-joint pull-ups, pull-downs, rowing, etc., single-joint barbell dumbbell curls, etc.

These movements develop the main functions of biceps and can provide the greatest training effect

The biceps will also participate in the bench press, and the horizontal adduction of a shoulder joint is performed. Just as the short biceps also has this function

In addition, when upward bench press, shoulder push or front flat lift, the movements of the shoulder joint include flexion, so long heads and short heads will also participate in the movements.