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75 cards
bio 105
| Question | Answer |
|---|---|
| the smiling muscle | zygomaticus |
| neck muscle | sternocleidomastoid |
| raises the eyebrows | occipitofrontails |
| closes the eyelids | orbicularis oculi |
| puckers the lips | orbicularris oris |
| frowning muscle | depressor anguli oris |
| intrinsic tongue muscles | changes the shape of the tongue |
| extrinsic tongue muscles | move the tongue |
| muscle cells | muscle fibers |
| buttockes | gluteus maximus |
| chest muscles | pectoral muscles |
| back muscles | latissimus dorsal |
| ability for the muscle to contract | contractillty |
| ability for a muscles to recoil back to its original length | elasticity |
| ability for the muscles to extend | extendibillty |
| flattens the checks | buccinator |
| flexes the wrist | flexor carpi |
| extensor carpi | extends the wrist |
| flexor digitorum | flexes the fingers |
| extensor digitorum | extends the fingers |
| quadriceps femoris | extends the leg |
| sartorius | flexes the legs |
| pectoralis major | adducts and flexes the arm |
| latissimus dorsi | aducts rotates and extends the arm |
| deltiod | attaches the humerus to the clavicle |
| triceps brachii | extends the forearm |
| biceps brachii | flexes the forearm |
| brachialis | flexes the forearm |
| brachioradialis | flexes and supinates the forearm |
| hamstring muscles | posterior thigh muscles |
| gastrocnemius and soleus | formthe calf muscles |
| mastication | chewing |
| levator labii superioris | sneering |
| contracttility | ability for skeleton muscles to shorten with force |
| fascia | connective tissue located outside the epimysium |
| the cytoplasm of each fiber | myofibrils |
| excitability | ability of skeletal muscle to respond with stimulus |
| elasticity | ability to recoil to their original resting length after they have been stretched |
| fascia | a connective tissue located outside the epimysium sheath |
| perimysium | fasciculi surrounded by loose connective tissue |
| each muscle fiber is a | single cylindrial cell containing many nuclei |
| endomysium | each fiber surrounded by a muscle tissue sheath |
| myofibrils | cytoplasm of each fiber is filled with |
| sarcomeres | actin and m,yosin myofilaments form highly ordered units |
| banded | the arrangements of actin and myolfiaments give this look |
| resting membrane potential | charge difference across membrane |
| action potential | brief reversal back of a charge |
| motor neurons | nerve cells that carry action potentials to skeletal muscle fibers |
| muscle twitch | contraction in muscle that causes action potential |
| threshold | a muscle fiber that will not respond to stimulus until reached a certain level |
| all-or-none response | the phenomenon that only responds when reached to a certain level |
| lag phase | time between a motor neuron and the beginning of contraction |
| tetany | when the muscle remains contracted |
| relaxation phase | relaxation time for muscles |
| contraction phase | time of contraction |
| recruitment | increase number of motor units being activated |
| ATP | used for muscle energy |
| where is ATP made? | mitchondria |
| creatine phosphate | high energy molecules |
| anaerobic respiration | without oxygen |
| aerobic respiration | with oxygen |
| muscle tone | constant tension in contracted muscles |
| origin | most stationary end of a muscle |
| 2 kinds of major proteins | actin myofilaments and myosin myofilaments |
| mastification | 2 pairs of pterygoids |
| mastification | 2 pairs of temporalisis |
| mastification | 2 pairs of masseter |
| trapezelus | rotates scapula |
| deltoid | attatches humerus to scapula and clavicle |
| what does ATP degenerate? | ADP |
| musculoskeletal system also known as | locomoter system |
| what does the musculoskeletal system do? | provides form, support, stability, strength, and movement for body |
| tendons | what connects the skeletal system to the muscular system? |
Created by:
zane porter
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