beginning
In this article, I will explain the “pectoralis major muscle” in detail.
The pectoralis major muscle is essential for upper limb movement, and is a muscle composed of two parts: the clavicle region and the thoracic rib region. It is used in many movements in everyday life, and plays a central role in moving the upper arm in particular. Please use this article to deepen your understanding of the body.
Click here to watch a video about pectoralis major muscle (pectoralis major)
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What is pectoralis major muscle
The pectoralis major muscle is one of the muscles that play an important role in the human body and is essential for upper limb movement. This area is used in many everyday movements, and plays a central role in moving the upper arm in particular.
How to read pectoralis major
This muscle is read as “daikokin.” As the saying goes, it means a large muscle located in the chest area.
Characteristics of pectoralis major muscle
The pectoralis major muscle consists of two parts: the clavicle and thoracic ribs. Each has a different function while supporting arm movement.
Location and position of pectoralis major muscle
If you look at the human anatomy diagram, the pectoralis major muscle extends to cover the front of the chest.
It is connected from the collarbone to the rectus abdominis sheath at the bottom and along the sternum in the center.
How to memorize pectoralis major
It's a good idea to imagine pectoralis major as a “muscle that opens doors.” You can learn the position and shape of this muscle through the movement of extending both arms and moving them forward.
English and Latin for pectoralis major muscle
The English name is “Pectoralis Major,” and it is expressed similarly in Latin. It has the meaning of “large part of the chest.”
Trivia about pectoralis major muscle
Here's some trivia.
If you train your pectoralis major with strength training, not only will your appearance change, but you will also become more resistant to the cold and improve your exercise performance.
Tissues associated with pectoralis major muscle: characteristics of the humerus
The humerus bone is the only bone that connects the shoulder joint to the elbow joint, and functions as part of the upper limb skeleton. This bone is part of a long bone, and the main parts include the head, body (shaft), and kneecap (epicondyles) that form joints. In particular, the pectoralis major muscle comes into contact with the front surface of the humerus bone and has an important role in transmitting force.
The pectoralis major muscle itself is the largest of the chest muscles and is involved in shoulder exercises, internal rotation of the upper leg, and the movement of pulling the shoulder forward. By attracting the pectoralis major muscle to the shoulder joint of the humerus bone, it supports exercises such as lifting and pushing the arm.
Tissues related to pectoralis major muscle: location and position of the humerus
The humerus bone occupies the central part of the arm (upper limb) and connects the shoulder to the elbow. The pectoralis major muscle connects to the front of this humerus, mainly to the outside of the humerus bone, and the humerus can be moved by muscle contraction. It plays an important role in many actions in everyday life, such as lifting and pulling objects.
Tissues associated with pectoralis major muscle: trivia about the humerus
Here's some trivia.
The humerus takes up approximately 1/3 of the total length of an adult arm. There are individual differences in length, but the average is about 30 cm for men and 27 cm for women.
The pectoralis major muscle and humerus are important analysis targets in the medical and sports fields. For example, when training the pectoralis major muscle, better results can be obtained by coordinating with the humerus bone.
A humerus fracture is generally caused by a fall or direct blow. The effects on the human body vary depending on the location and type of fracture, but they often affect the pectoralis major muscle and may adversely affect arm movement.
Pectoralis major quiz
Q: What is the main function of the pectoralis major muscle?
A: Supporting movements such as raising and lowering arms and hugging.
summary
This time, I explained the location and location of the “pectoralis major muscle”, how to memorize it, and the English/Latin notation.
How was it?
I would be happy if reading this article deepened my understanding of anatomy.
Learning is a long, never-ending journey, but I sincerely wish you all the best. Let's continue to study together and work hard for the national exam!
Please look forward to the next blog.
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A 3D anatomy app that shows all the structures of the human body
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