Anatomy

Brachioradialis: Functional Anatomy Guide

The brachioradialis (G. brachion, arm. L. radius, stake or rod [shape of radius bone]) is a large forearm muscle, whose name refers to its connection between the upper arm and radius. It is located in the superficial posterior compartment of the forearm, which includes many of the wrist extensor muscles… …But unlike the wrist extensors, the brachioradialis is mostly …

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Pectoralis Minor: Functional Anatomy Guide

The pectoralis minor (L. pectus, chest ; minor, smaller.) is the smaller and lesser-known of the two chest muscles. It helps stabilize the scapula and is the prime mover in scapular downward rotation. It’s involved in other scapular movements, which I’ll cover later. It is technically classified as part of the anterior axioappendicular muscle group. …

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Movements of the Ankle Joint

Dorsiflexion: Definition: Raising your the ball of your foot up, toward the shin. Image: Muscles Involved: Tibialis anterior Extensor digitorum longus Extensor hallucis longus Fibularis tertius Exercises: Reverse calve raise Heel walk Plantarflexion: Definition: Pushing the ball of your foot down, away from the shin. Image: Muscles Involved: Gastrocnemius Solues Plantaris Tibialis posterior Fibularis longus …

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Movements of the Knee Joint

Extension: Definition: Straightening the knee joint by moving the lower leg away from the hamstring. Image: Muscles Involved: Rectus femoris Vastus medialis Vastus intermedius Vastus lateralis Tensor fascia lata (provides stabilization) Exercises: Squat Leg press Leg extension Lunge Flexion: Definition: Bending the knee joint by moving the lower leg toward the hamstring. Image: Muscles Involved: …

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Internal Oblique: Functional Anatomy Guide

The internal oblique (L. internus, internal ; obliquus, oblique.) is a flat sheet of muscle on either the side of the lower torso. It gets its name from being beneath the external oblique and having an oblique fiber direction relative to the midline. The most prominent actions of the internal oblique are spinal lateral flexion and spinal rotation. Notably, …

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calf anatomy

Calf Anatomy: All About the Calf Muscles

The calf anatomy includes the gastrocnemius (aka “gastroc”) and the soleus. Get ready to learn about both of these muscles, their locations and their functional anatomy. This page provides an overview of the calf muscle group. Discover more information about the calf anatomy by clicking the links throughout the page. The 2 Calf Muscles and …

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chest anatomy

Chest Anatomy: All About the Chest Muscles

The chest anatomy includes the pectoralis major, pectoralis minor and the serratus anterior. Learn about each of these muscles, their locations, functional anatomy and exercises for them. This page provides an overview of the chest muscle group. Find out more about the individual muscles within the chest anatomy by clicking their respective links throughout this …

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shoulder anatomy

Shoulder Anatomy: All About the Shoulder Muscles

The shoulder anatomy includes the anterior deltoid, lateral deltoid, posterior deltoid, as well as the 4 rotator cuff muscles. Learn about these muscles, their origin and insertion points, and their functional anatomy. Plus, exercises for training them. The following is an overview of the shoulder muscle anatomy. Deltoids Anatomy When most people think of the …

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Movements of the Spine

Cervical Spine Extension: Definition: Straightening/arching the cervical spine by moving the head and neck posteriorly (backward). Image: MusclesInvolved: Splenius capitis Splenius cervicis Iliocostalis cervicis Longissimus capitis Longissimus cervicis Spinalis capitis Spinalis cervicis Semispinalis capitis Semispinalis cervicis Interspinales cervicis Intertransversarii anterior cervicis Intertransversarii posterior cervicis Rectus capitis posterior major Rectus capitis posterior minor Obliquus capitis superior …

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