Major Muscles of the Human Body
MooMooMath and Science
Published at : 18 Dec 2020
**** Sorry I made a mistake at 00:49 I incorrectly label and describe the thigh adductors as hip abductors. The thigh adductors pull the legs together when they contract.*******
I cover many of the major muscles of the human body.
The Pectoralis major: is a thick, fan-shaped muscle, situated at the chest of the human body.
The Bicep is a large muscle that lies on the front of the upper arm between the shoulder and the elbow. Its main function is to flexes and twists the forearm.
The abdominal muscles support the trunk, allow movement and hold organs in place
The sartorius muscle is the longest muscle in the human body. It is a long, thin, superficial muscle that runs down the length of the thigh This muscle helps you cross your legs
The abductor muscle group is located on the lateral side of the thigh and moves the thigh away from the body’s midline.
The trapezius muscle resembles a trapezoid or diamond-shaped quadrilateral
It helps support the weight of the arm and move the shoulder
The Deltoid forms the rounded contour of the human shoulder. It is a prime mover of arm
The latissimus dorsi is the largest muscle in the upper body.It is responsible for extension, adduction, internal rotation of the shoulder. This muscle helps you do pull ups at the gym.
The serratus anterior is a muscle that originates on the surface of the 1st to 8th ribs at the side of the chest. It acts to pull the scapula forward around the thorax.
External oblique The external oblique functions to pull the chest downwards and compress the abdominal cavity, It also performs (same side) side-bending and (opposite side) rotation
The brachioradialis is a muscle of the forearm that flexes the forearm at the elbow. For example, using a hammer.
Finger extensions include 9 extensor muscles found in the posterior side of the forearm and extend the hand and fingers.
Finger flexors help you close your hand
Quadriceps is a large muscle group that includes the four prevailing muscles on the front of the thigh. These muscles are the great extensor muscle of the knee
Hamstrings a hamstring is one of the three posterior thigh muscles in between the hip and the knee The hamstrings cross and act upon two joints – the hip and the knee
The gastrocnemius forms half of the calf muscle. Its function is flexing the foot at the ankle joint and flexes the leg at the knee joint.
Tibialis anterior It is responsible for flexing the foot backward and inverting the foot.
The soleus is a powerful muscle in the back part of the lower leg aka (the calf). It runs from just below the knee to the heel, and is involved in standing and walking.
The infraspinatus muscle is a thick triangular muscle It is one of the four muscles of the rotator cuff, it’s main function is to rotate the humerus and stabilize the shoulder joint.
The teres major helps rotate the humerus and assists the latissimus dorsi in drawing the previously raised humerus downwards and backward.
Triceps is a large muscle on the back of the upper arm It is responsible for straightening the arm.
The gluteus medius is a muscle that helps with hip movement
When you walk and run it aids in stabilizing your pelvis, in particular when you perform activities where you balance on a single leg.
Gluteus maximus is the main extensor muscle of the hip You use the gluteus maximus when you stand up from a chair, sprint, run, and go up steps.
Common muscles of the human bodymusclesanatomy