Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch.6 muscles
| Question | Answer |
|---|---|
| contractility | Shorten with force |
| excitability | Respond to stimulus |
| Exstensability | To be stretched |
| fascia | Outermost connective tissue |
| epimysium | Inside the fascia, second layer of connective tissue |
| muscle fascicle | Bundles of muscle cells |
| perimysium | Surrounding each fascicle |
| muscle cells | Muscles fibers |
| Endomysium | Surounds each fiber |
| actin myofilaments | Thin, pearls |
| myosin filaments | Thick, golf clubs |
| sarcomeres | Basic unit of muscle |
| z line | Thin line of actin, starts and finishes the sarcomeres |
| I band | On both sides of the z line, light area, made of actin |
| a band | Bark area of sarcomeres, made up of myosin |
| h zone | Between he a zone, made of myosin |
| occipital frontalis | Raises the eyebrows |
| orbicularis oculi | Closes the eyelids |
| orbicularis oris | Pickers your lips |
| buccinator | Flattens the cheeks |
| zygomaticus | Smiling |
| levator labii superioris | Sneering |
| depressor anguli opris | Frowning |
| mastication | Another word for chewing |
| mastication muscles | 2 pair of pterygoids, tempralis, and masseter |
| intrinsic muscles | Change the shape of the tongue |
| extrinsic muscles | Moves the tongue |
| sternocleidomastoid | Rotate and abducts head, prime mover of neck |
| erector spinae | Group of muscles that keep the spine straight and the body erect |
| diaphragm | Accomplished quiet breathing |
| trapezius | Rotates scapula |
| serratus anterior | Pulls scapula anteriorly |
| pectoralis major | Adducts and flexes the arm |
| M line | Dark line down the center |
| motor neurons | Nerve cells that carry action potential to muscles |
| presynaptic terminal | Enlarges nerve terminal |
| synaptic cleft | Place between presynaptic and the muscle |
| postsynaptic terminal | The muscle fiber touching the synaptic cleft |
| synaptic vesicles | Secrete neurotransmitters |
| acetylcholine | Neurotransmitter from the synaptic vesicle |
| acetylcholinesterase | Makes sure that only one action potential is sent to the motor neuron |
| sliding filament mechanism | Sliding of actin and myosin during contraction |
| muscle twitch | Contraction of an entire muscle responding to stimulus that causes the action potential in one or more muscle fibers |
| threshold | Muscle fiber will not respond until the stimulus reaches this level |
| lag phase | The time between application of stimulus and the beginning of contraction |
| contraction phase | The time of contraction |
| Relaxation phase | when the muscle is relaxed |
| Tetany | Contraction without relaxation |
| creatine phosphate | high energy molecule gathered during the resting state |
| pectoris major | Addicts and flex’s the arm |
| latissimus dorsi | Extends arm powerfully, rotates and adducts the arm |
| deltoid | Attaches the humerus to the scapula and clavicle |
| triceps brachii | Extends the forearms |
| biceps brachii | Flexes the forearm |
| brachialis | Flexes forearm |
| flexor carpi | Flexes the wrist |
| extensor carpi | Extends the wrist |
| flexor digitorum | Flexes the fingers |
| extensor digitorum | Extends the fingers |
| gluteus maximus | Buttocks |
| gluteus Medius | Hip muscles |
| quadriceps femoris | extends the legs, anterior thigh muscle |
| sartorius | flexes the thigh |
| hamstring | posterior thigh muscle, flexes the legs and extends the thigh |
| anaerobic respiration | without oxygen |
| aerobic respiration | with oxygen |
| origin | head of the muscle and doesn't move as much |
| insertion | end of the muscle undergoing the most movement |
| belly | portion between insertion and the head |
| synergist | muscles that work together to accomplish the same movement |
| antagonist | muscles that work against (or opposite) of each other |
| prime mover | the one that works the most among group of synergists |
| gastrocnemius and soleus | form the calf muscle |
| four functional characteristics of skeletal muscle | contractility, excitability, extensibility, elasticity |
| latissimus dorsi is also called what | swimmers muscle |
Created by:
madihill
Popular Anatomy sets