Flashcards: Anatomy: Muscles
About these flashcards
Created by:
amperianlime on February 19, 2007
Subjects:
Groups:
anat and phys, A&P Lecture & Lab, S&C Science, Patty and Sash
Log in to favorite or report as inappropriate.All 43 terms
Latin | English |
|---|---|
| supraspinatus |  origin is supraspinatus fossa of scapula and insertion is greater tubercle of humerus. helps prevent downward dislocation of humerus |
| coracobrachialis | flexes humerus, antagonist of supraspinatus |
| triceps brachii | extends arm at elbow |
| biceps brachii | powerful flexor of forearm; origin is glenoid process and coracoid process of scapula, insertion is radial tuberosity |
| brachialis | flexes elbow |
| palmaris longus | flexes wrist |
| extensor carpi radialis | abducts wrist and flexes hand at wrist, origin is medial epicondyle of humerus, insertion is base of 2 and 3 metacarpals |
| supinator | rotates forearm laterally |
| sartorius | abducts and laterally rotates femur, origin is iliac crest, insertion is proximal tibia/patella |
| gracilis | adducts femur/thigh |
| rectus femoris | part of quadriceps group, extends leg at knee |
| vastus lateralis | part of quadriceps group, extends leg at knee |
| gluteus maximus | heaviest muscle in body, extends/straightens leg at hip during walking |
| biceps femoris | part of hamstrings group, flexes knee and extends thigh, rotates thigh laterally |
| semitendinosus | part of hamstrings group |
| semimembranosus | part of hamstrings group |
| gastrocnemius | plantar flexes foot, flexes leg at knee when foot is dorsiflexed |
| tibialis anterior | dorsiflexion and inversion of foot |
| soleus | plantar flexes the foot, origin is lateral surface of head of fibula, insertion is calcaneus |
| longissimus capitus | helps maintain posture, extends head and rotates face/head to same side |
| hernia | protrusion of fat or intestine from abdominal wall |
| abdominal aponeuroses | tendons of various abdominal muscles that interlace at midline |
| auricular | wiggle ears |
| orbicularis oculi | blink eye, smile |
| zygomaticus major | smiling muscle, raises corners of mouth upwards |
| orbicularis oris | spincter muscle used for "puckering up" and whistling |
| mentalis | protrudes lower lip and wrinkles chin, sad |
| buccinator | compresses cheek, allowing for rapid changes in volume of mouth cavity |
| platysma | sheet-like muscle in neck that pulls mouth (jaw) downward |
| nasalis | changes size of nasal openings |
| digastric | opens jaw |
| sternocleidomastoid | rotates face to opposite side, laterally flexes head to same side, origin is manubrium of sternum, insertion is mastoid process of temporal bone |
| rectus abdominus | major spine flexor, forms 6 pack and translates to "straight muscle of abdomen" |
| external oblique | origin is lower 8 ribs, compresses abdomen; most external of abdominal muscles |
| internal oblique | compresses abdomen, middle layer; fibers point up to the head |
| transverse abdominus | compresses abdomen, deepest layer of ab muscles |
| linea alba | midline of chest where abdominal aponeuroses meet |
| serratus anterior | pulls scapula downward and forward |
| trapezius | origins are occipital bone and spines of cervical/thoracic vertebrae. insertions are clavicle and spine/acromion process of scapula. elevates scapula, carries tension |
| rhomboid major | adducts scapula |
| pectoralis major | prime mover for shoulder flexion and adduction |
| latissimus dorsi | adducts and extends upper arm/shoulder, rotates humerus medially |
| deltoid | prime mover for upper arm/shoulder abductor, flexes/extends humerus |