7 Types Of Biceps And Their Functions

Last Updated on September 12, 2023 by Chase Reiner

The biceps is a muscle in the upper arm. It has two heads: one that attaches to the coracoid process, and one that attaches to the scapula. There are 7 different types of biceps muscles, each with its own function:

• Biceps Brachii
• Coracobrachialis
• Triceps Brachii
• Anconeus
• Pronator Teres 
• Supinator
• Teres major

Where Are Your Biceps?

The biceps are located on the front of the upper arm, between the shoulder and the elbow. They are large muscle that is made up of two heads: the short head and the long head. The short head originates on the coracoid process of the scapula, while the long head originates on the supraglenoid tubercle of the scapula. The two heads of the biceps join to form a single muscle belly, which is attached to the radius bone of the forearm.

The biceps are responsible for flexing the forearm at the elbow joint and supination of the forearm (turning the palm upward). They are also involved in other movements of the shoulder and elbow, such as lifting objects and pushing.

Here are some more facts about the biceps:

• The biceps is the most prominent muscle in the upper arm.
• The biceps is a two-headed muscle, meaning that it has two origins.
• The biceps is responsible for flexing the forearm at the elbow joint and supination of the forearm.
• The biceps is also involved in other movements of the shoulder and elbow, such as lifting objects and pushing.
• The biceps is a popular muscle to train for strength and size.
• Biceps injuries are common, especially among athletes.

7 Types Of Biceps And Their Functions

Biceps Brachii

The biceps brachii is the most common type of bicep. It attaches to the coracoid process and scapula, then runs down your arm to attach to an elbow joint. This muscle extends the arms while flexing at a shoulder joint. The function of this muscle in conjunction with many other muscles make up what’s called “the kinetic chain.”

In order for any motion that you might do involving strength or speed (such as throwing) to be successful, it requires all those different muscles working together through their entire ranges of movement.

This muscle also works in coordination during various movements such as bending over and picking something off the ground; pulling back hard when swimming; lifting heavy objects from one place to another place.

Functions

1. The biceps brachii is a muscle that flexes the elbow and supinates the forearm

2. It originates on the scapula spine, inserts at two points on the radius, and assists in stabilizing the shoulder joint

3. The biceps brachii is innervated by nerves from C5-C6 spinal segments

4. A tear of this muscle can cause pain, weakness or paralysis in any one of these areas 

5. Biceps Brachii Function should be assessed by physical examination to determine if it’s torn or not 

6. If you’re experiencing any of these symptoms after an injury to your arm then you may have injured your biceps brachii function and will need medical attention as soon as possible!

Coracobrachialis

The coracobrachialis is a muscle that flexes the shoulder joint and depresses the arm. It originates on the correct flange of the scapula, inserts into the anterior surface of the humerus, and assists in stabilizing the shoulder joint. This muscle receives innervation from the C57 spinal segment nerve. A tear or injury to this muscle can cause pain, weakness or paralysis in any one of these areas – such as trouble lifting your arms overhead; difficulty wearing shirts with short sleeves due to tightness over biceps (hiking up the sleeve); inability to reach outside elbow against resistance without using other muscles  (Lift). If you’re experiencing any of these symptoms after an injury then it’s likely that you have a tear or injury to your coracobrachialis muscle.

Functions

1. The coracobrachialis is a muscle that originates from the upper arm bone and inserts into the biceps

2. It functions to flex the arm at the elbow joint

3. The coracobrachialis also assists in rotating your arms inward, such as when you are trying to touch your shoulder with your opposite hand

4. The muscle can be strengthened by exercises like holding weights or elastic bands in both hands while extending one of them and contracting the muscles on that side of your body

5. This exercise should be repeated for about 15-20 seconds per set, 3-4 sets per day for optimal results 

6. You will know you have done this correctly if you feel it working its way up to your shoulder blade.

Triceps Brachii

The triceps brachii is a muscle that originates on the scapula and inserts into the forearm. It functions to extend your arm at the elbow joint. The muscle can be strengthened by exercises like pushing or pulling weights with both arms, using both hands simultaneously while extending one arm, and contracting the muscles on that side of your body (for example: holding two weights in each hand, then raising one arm up while lowering it). This exercise should be repeated for about 15-20 seconds per set, three times daily for maximum results. You will know you have done this correctly if you feel it working its way down to your armpit area.

Functions

1. The Triceps Brachii is a three-headed muscle in the back of the upper arm

2. It originates on the scapula and inserts on the olecranon process of the ulna, which is where it gets its name from

3. Its main function is to extend your elbow joint by straightening out your arm 

4. There are two ways that you can strengthen this muscle – one way would be to do push-ups or dips with your palms facing away from you (which will target all three heads) and another way would be to do tricep extensions using a cable machine with an EZ bar attachment (which will only target one head at a time)

5. When comparing strength between people who have stronger triceps brachii muscles vs weaker ones, research has shown that those with stronger triceps brachii muscles had higher scores on grip tests and better handgrip endurance than those who had weaker triceps brachii muscles

6. So what does this mean for us as humans living our everyday lives in today’s society where we need to use our hands more often than not for everything from texting, driving, typing documents, etc.

Anconeus

The anconeus is the small muscle that sits at the back of your arm. Occasionally, it will be used to stabilize your elbow joint when you do a push-up on an unstable surface such as a balance board or suspension trainer.

Functions

1. The anconeus is a small muscle in the back of the arm

2. It originates from the ulna and inserts into the olecranon process of the ulna

3. Its function is to extend and adducts (moves) wrist, hand, and fingers 

4. This muscle may also help stabilize elbow joint during weight-bearing activities such as walking or running 

5. Anconeus can be injured by sudden forceful extension of the forearm against resistance with palm up 

6. The most common symptom associated with injury to this muscle is pain on resisted extension of the forearm against resistance with palm up – known as “wrist drop”

Pronator Teres

The pronator teres is a small muscle in the forearm. It originates from the medial epicondyle of the humerus and inserts into three different parts:  – base of the second metacarpal, on the lateral surface of the radius near styloid process, and at the coronoid process of ulna

Functions

1. The pronator teres muscle is the longest of the forearm muscles

2. It originates on the anterior surface of the ulna and inserts onto the distal radius 

3. Its primary role in flexing and supinating (rolling) your hand palm down, as well as rotating it inward or outward 

4. When this muscle contracts, it will also externally rotate your arm at its elbow joint 

5. This muscle is involved in many common movements such as brushing teeth, using a computer mouse, shaking hands with someone else’s hand and opening a doorknob with your thumb while holding onto it with other fingers 

6. Pronator teres syndrome is characterized by pain in both sides of your forearm near where this muscle attaches to bone at its proximal end.

Supinator

This muscle originates on the posterior surface of the ulna and inserts onto the distal radius. Its primary role is supinating (rolling) your hand palm up, as well as rotating it outward or inward. When this muscle contracts, it will also externally rotate your arm at its elbow joint. This muscle is involved in many common movements such as brushing teeth, using a computer mouse, shaking hands with someone else’s hand and opening a doorknob with your thumb while holding onto it with other fingers. Supinator syndrome is characterized by pain near where the muscles attach to bone at its proximal end but can be treated conservatively with different types of exercise for relief from symptoms if there are not any neurological deficits present that would make surgery necessary.

Functions

1. The supinator muscle is responsible for turning the forearm palm-down and also rotating it inwards

2. This muscle attaches to the radius bone on the thumb side of your arm and then travels across to attach to the ulna bone, which is located near your elbow

3. When this muscle contracts it causes a rotation that brings your hand from facing up towards down as well as bending your fingers at an angle so they are pointing towards you

4. If there was a tear or injury in this area, it could lead to pain or weakness in this region 

5. A common cause of injury is when someone falls from their bike while riding without wearing any gloves – if not properly cared for, these injuries can worsen over time and result in chronic problems with movement or sensation.

Teres Major

This muscle is located on the outer edge of your upper arm, and when contracted it causes a rotation that brings the hand from facing up towards down as well as bending the fingers so they are pointing towards you. If there was an injury or tear in this area then it could lead to pain or weakness in this region. A common cause of injury for there’s major injuries can be if someone falls off their bike while riding without wearing any gloves – if not properly cared for these injuries can worsen over time and end up causing chronic problems with movement or sensation.

Functions

1. The Teres Major muscle is located on the upper arm

2. It serves to move the arm outward and rotate it inward

3. The Teres Major assists in flexing, rotating, and extending the elbow joint 

4. It also helps stabilize the shoulder blade by acting as a postural muscle 

References:

https://www.medicinenet.com/where_are_your_biceps/article.htm
https://www.vedantu.com/biology/biceps-muscle