Healthy Muscles Matter! Muscles of the Body Healthy Muscles Matter!
Facts About Muscles The body has more than 600 muscles Muscles help you move, lift things, pump blood, and help you breathe Healthy muscles let you move freely and keep the body strong
Maintaining Healthy Muscles Physical activity including walking, jogging, lifting weights, dancing, and playing sports Eat a healthy diet containing a lot of fruit, vegetables, lean protein, whole grains, and low fats Prevent injuries by warming up, cooling down, and wearing proper gear
Muscle Function The main function of muscles is movement by generating force
Body Movements Flexion and Extension Flexion: decreases angle between the bones Extension: increases angle between the bones
Body Movements Abduction and Adduction Abduction: move away from the midline Adduction: move toward the midline
Major Muscles and Muscle Groups These are muscles that typically benefit from exercise, specifically resistance training.
Trapezius (Traps) Main function is to stabilize or move the scapula (shoulder blade)
Deltoids Responsible for arm movement, particularly elevation and abduction
Pectorals (Major & Minor) (Pecs) Pecs are responsible for movement of the shoulder joint
Biceps The biceps supinate the forearm and flex the arm at the elbow
Triceps Triceps extend the arm at the elbow
Abdominals (Abs) Abs support posture, bend the trunk, and protect internal organs
Gluteal Muscles (Glutes) Glutes provide shape of the buttocks and extend and rotate the hip
Quadriceps (Quads) Extends the leg at the knee and flexes the hip
Hamstrings Hamstrings flex the leg at the knee and extend the hip
Calves Calves flex the ankle and curl the toes