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Muscles of the Body
All the diffrent types of muscles and their function
| Term | Definition |
|---|---|
| skeletal muscles | consist of bundles of muscles cells, each wrapped in their connective tissue sheath. |
| Gluteus maximus | The hip muscle commonly called the buttocks |
| Endomysium | A muscle fiber is surrounded by this |
| oribicularis oculi | If someone starts winking a you, their using their. |
| Lag phase | The time between contracts in the legs |
| Relaxion | The time during which the muscles relax in a period |
| Fast Twitch | This causes muscle fibers to fatigue quickly |
| Slow Twitch | Muscle fibers that are resistant to fatigue |
| Interior/Exterior | Types of tongue muscles |
| Orbicularis Oculi | Closes the eyelids |
| Origin | The most stationary end of the muscle |
| Capitonfrontalis | Raises the eyebrows |
| Zygotmaticus | This muscle is used for smiling |
| Cardiac Muscle | is under involuntary control |
| Muscle Twitch | Is a contraction of an entire muscle in response to a stimulus. |
| Tetany | The condition where muscles remains contracted without relaxing |
| Aerobic Respiration | Occurs in the presence of oxygen |
| Muscle Myofibrils | Contains actin and myosin, and extend from one end of the muscle fiber to the other. |
| Contractility | The ability of skeletal muscle to shorten with force |
| Excitability | The capacity of skeletal muscle to respond to a stimulus. |
| Extensibility | The ability to be streched |
| Elasticity | Ability to recoil to the original resting length. |
| Fascia | It surrounds and separates muscles. |
| Motor Neurons | Are nerve cells that carry action potentials to skeletal muscle fibers. |
| Erector spinae | group of muscles on each side of the back |
| External intercostals | elevate the ribs during inspiration. |
| linea alba | consists of white connective tissue rather than muscle |
| Tendinous inscriptions | cross the rectus abdominis at three or more locations, causing the abdominal wall of a well-muscled person to appear segmented. |
| Trapezius | rotates scapula |
| Serratus anterior | pulls scapula anteriorly |
| pectoralis major and latissimus dorsi muscles. | The arm is attached to the thorax by the |
| Pectoralis major | adducts and flexes the arm |
| Latissimus dorsi | “Swimmer muscles” |
| Deltoid | attaches the humerus to the scapula and clavicle, and is the major abductor of the upper limb. |
| Triceps brachii | extends the forearm. Occupies the posterior compartment of the arm. |
| Biceps brachii | flexes the forearm. Occupies the anterior compartment of the arm. |
| Brachialis | flexes forearm |
| Brachioradialis | flexes and supinates the forearm. |
| Retinaculum | strong band of fibrous connective tissue that covers the flexor and extensor tendons and holds them in place around the wrist |
| Flexor carpi | flexes the wrist |
| Extensor carpi | extends the wrist |
| Flexor digitorum | flexes the fingers. |
| Extensor digitorum | extends the fingers. |
| intrinsic hand muscles | 19 hand muscles |
| Interossi | located between the metacarpals, are responsible for abduction and adduction of the fingers. |
| Quadriceps femoris | extends the leg; anterior thigh muscles |
| Sartorius | tailors muscle”; flexes the thigh |
| Hamstring muscles | posterior thigh muscles; flexes the leg and extends the thigh. |
| Gastrocnemius and soleus | form the calf muscle |
| peroneus muscles | The lateral muscles of the leg |
| intrinsic foot | 20 muscles located within the foot |
| occipitofrontalis | It consists of two parts or bellies: The occipital belly, near the occipital bone, and the frontal belly, near the frontal bone |
| Smooth muscle | "involuntary muscle" |
| Skeletal muscle | "voluntary muscle" |
| actin and myosin. | The filaments in a sarcomere are composed of |
| depressor supercilii | Depression of eyebrow _ |
| corrugator supercilii | wrinkles forehead |
| iris sphincter | constricts pupil |
| auriculares | Wiggle ears |
| procerus | Draws down the medial angle of the eyebrow giving expressions of frowning |
| dilator naris | Dilation of nostrils |
| levator anguli oris | smile (elevates angle of mouth) |
| depressor anguli oris | depresses angle of mouth |
| sternocleidomastoid | Acting alone, tilts head to its own side and rotates it so the face is turned towards the opposite side. Acting together, flexes the neck, raises the sternum and assists in forced inspiration. |
| scalene | cervical nerves |
| erector spinae | extends the vertebral column |
| levatores costarum | Assists in elevation of the thoracic rib cage |
| external oblique | Rotates torso |
| internal oblique | Compresses abdomen and rotates vertebral column. |
| coracobrachialis | flexes & adducts humerus |
| extensor digitorum | extension of hand and fingers |
| extensor digiti minimi | extends the little finger at all joints |
| extensor carpi ulnaris | extends and adducts the wrist |
| flexor pollicis brevis | Flexion of thumb |
| abductor pollicis brevis | Abduction of thumb |
| flexor digitorum longus | Primary action is Flex digits |
Created by:
chriseidel
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