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Muscles made easy
Bio 210 - Cypress
Muscle | Origin | Insertion | Action |
---|---|---|---|
Fontailis | Galea aponeurotica | Skin of eyebrows | Raise eyebrows, wrinkle forehead |
Occipitalis | Occipitqal & Temporal | Galea aponeurotica | Pull scalp posteriorly |
Oricularis Oculi | Frontal & Maxilla | Tissues of eyelid | Close eyes, blinking, squinting |
Orbicularis Oris | Maxilla & Mandible | Muscle and skin at angles of mouth | Close and purse lips |
Zygomaticus | Zygomatic | Muscle and skin at corner of mouth | Raise lateral corners of mouth |
Buccinator | Maxilla & Mandible | Orbicularis Oris | Compress cheek (whistle, suck through straw) |
Risorius | Masseter muscle | Skin at angle of mouth | Draws corner of lip laterally |
Platysma | Chest Muscles (which two?) | Mandible;muscle and skin of mouth | Tense neck, pull lower lip back and down |
Masseter | Zygomatic & Maxilla | Mandible | Elevate mandible (Close jaw; Masticate (chew) food) |
Temporalis | Temporal | Mandible | Elevate and retract mandible |
Sternocleidomastoid | Sternum & Clavicle | Mastoid Process of Temporal Bone | Contract both sides; Flesxion of head. Contract one side; rotate head to opposite shoulder |
External Intercostals | n/a | n/a | Elevate rib cage during inspiration |
Internal Intercostals | n/a | n/a | Depress rib cage during forced exhalation |
Diaphragm | n/a | n/a | Prime mover of inspirations |
Pectoralis Major | Clavicle | Humerus | Flex and adduct arm |
Pectoralis Minor | Ribs | Scapula | Draw scapula forward |
Serratus Anterior | Ribs | Scapula | Draw scapula forward |
External Oblique | Ribs 5-12 | Linea Alba | Compress abdomen, trunk rotation |
Internal Oblique | Illium, Lumber Fascia | Linea Alba | Compress abdomen, trunk rotation |
Transversus Abdominis | Illium, Ribs | Linea Alba | Compress abdomen |
Rectus Abdominis | Pubis | Xiphoid, Costal cartilage of ribs 5-7 | Flex vertebral column - sit-ups |
Trapezius | Occipital & C7-T12 | Scapula & Clavicle | Elevate and retract scapula |
Deltoid | Clavicle & Scapula | Humerus | Abduct arm |
Latissimus Dorsi | T7-12, L1-5, Ribs, Illium | Humerus | Extend and adduct arm |
Teres Major | Scapula | Humerus | Extend and adduct arm |
Teres Minor | Scapula | Humerus | Lateral rotation |
Supraspinatus | Scapula | Humerus | Abduct arm |
Infraspinatus | Scapula | Humerus | Lateral rotation of arm |
Subscapularis | Scapula | Humerus | Medial rotation of arm |
Coracobrachialis | Scapulae | Humerus | Adduction and flexsion |
Biceps Brachii | Scapula & Humerus | Radius | Flex forearm |
Brachialis | Humerus | Ulna | Flex forearm |
Brachioradialis | Humerus | Radius | Flex forearm |
Triceps Brachii | Scapula & Humerus | Ulna | Extend forearm |
Flexor Caqrpi Radialis | Humerus | Wrist | Flex wrist |
Palmaris Longus | Humerus | Palm | Flex wrist |
Flexor Carpi Ulnaris | Humerus | Wrist | Flex wrist |
Flexor P)ollicis Longus | Radius | Pollex | Flex thumb |
Extensor Carpi Radialis Longus | Humerus | Wrist | Extend wrist |
Extensor Carpi Radiallis Brevis | Humerus | Wrist | Extend wrist |
Extensor Digitorum | Humerus | Distal Phalanges 2-5 | Extend wrist & fingers |
Extensor Carpi Ulnaris | Humerus | Wrist | Extend wrist |
Extensor Pollicis Brevis | Radius & Ulna | Pollex (distal phalanx) | Extend thumb |
Extensor Pollicis Longus | Radius & Ulna | Pollex (distal phalanx) | Extend thumb |
Gluteus Maximus | Illium, Sacrum, Coccyx | Femur | Extend thigh |
Gluteus Medius | Illium | Femur | Abduct and medially rotate thigh |
Iliopsoas | Illium, Sacrum | Femur | Flex thigh |
Pectinius | Pubis | Femur | Adduct, flex and medially rotate thigh |
Sartorius | Illium | Tibia | Flex and laterally rotate thigh |
Gracilis | Pubis | Tibia | Adduct and flex thigh |
Tensor Fasciae Latae | Ilium | Iliotibial tract | Flex aqnd abduct thigh |
Adductor Longus | Pubis | Femur | Adduct, flex and medially rotate thigh |
Adductor Magnus | Ischium & Pubis | Femur | Adduct, flex and medially rotate thigh |
Rectus Femoris | Ilium | Tibia & Patella | Extend knee and flex thigh |
Vastus Lateralis | Femur | Tibia & Patella | Extend knee |
Vastus Medialis | Femur | Tibia & Patella | Extend knee |
Vastus Intermedius | Femur | Tibia & Patella | Extend knee |
Biceps Femoris | Ischium & Femus | Tibia | Extend thigh and flex knee |
Semitendinosus | Ischium | Tibia | Extend thigh and flex knee |
Semimembranosus | Ischium | Tibia | Extend thigh and flex knee |
Tibialis Anterior | Tibia | 1st Metatarsal | Dorsiflexion |
Extensor Hallucis Longus | Fibula | Distal Phalanx of Hallux | Extend hallux, dorsiflexion |
Extensor Digitorum Longus | Tibia & Fibula | Distal Phalanges 2-5 | Extend toes 2-5 |
Fibularis Longus | Fibula | 1st Metatarsal | Plantar flexion, evert foot |
Fibularis Brevis | Fibula | 5th Metatarsal | Plantar flexion, evert foot |
Fibularis Tertius | Fibula | 5th Metatarsal | Dorsiflexion, evert foot |
Gastrocnemius | Femur | Calcaneus | Plantar flexion |
Soleus | Femur & Tibia | Calcaneus | Plantar flexion |
Plantaris | Femur | Calcaneus | Plantar flexion (fig 15.15a pg 165) |
Flexor Hallicis Longus | Fibula | Distal Phalanx of Hallux | Flex hallux |
Flexor Digitorum Longus | Tibia | Distal Phalanges 2-5 | Flex digits 2-5 |
Tibialis Posterior | Fibia & Fibula | Tarsals/metatarsals | Plantar flexion, foot inversion |