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
Muscle System
| Question | Answer |
|---|---|
| the ability to shorten with force | contractibility |
| the capacity to respond to a stimulus | excitability |
| ability to be stretched | extensibility |
| ability to recoil to original resting length | elasticity |
| connective tissue sheath (surrounds muscle directly) | epimysium |
| connective tissue outside epimysium (surrounds and separates) | fascia |
| loose connective tissue surrounding fasciculi | perimysium |
| single muscle cells | fibers |
| connective tissue sheath surrounding each fiber | endomysium |
| threadlike structure that extends from one end of fiber to other | myofibrils |
| thin myofilaments | actin |
| thick myofilaments | myosin |
| basic structural and functional unit | sarcomere |
| light area on each side of Z line | I band |
| dark area | A band |
| nerve cells carrying action potentials | motor neurons |
| neuromuscular junction | synapse |
| single motor neuron | motor unit |
| neurotransmitter secretion | acetylcholine |
| secrete acetylcholine | synaptic vesicles |
| enzymatic breakdown of acetylcholine | acetylcholinesterase |
| sliding of actin past myosin during contraction | sliding filament mechanism |
| contraction of entire muscle in response to stimulus | muscle twitch |
| muscles remain contracted (no relax) | tetany |
| ATP used faster than produced | muscle fatigue |
| equal distance | isometric |
| equal tension | isotonic |
| constant tension | muscle tone |
| most stationary end | origin |
| end of muscle | insertion |
| between origin and insertion | belly |
| brief reversal of charge | action potential |
| enlarged nerve terminal | presynaptic terminal |
| space between presynaptic terminal and muscle cell | synaptic cleft |
| muscle fiber | postsynaptic terminal |
| muscles working together for specific movements | synergists |
| muscles working in opposition | antagonists |
| major role muscle | prime mover |
| chewing | mastication |
| raising eyebrows | occipitofrontalis |
| closing eyelids | orbicularis oculi |
| puckering lips | orbicularis oris |
| flattening cheeks | buccinator |
| smiling | zygomaticus |
| sneering | levator labii superioris |
| frowning | depressor anguli oris |
| lateral neck muscle and prime mover | sternocleidomastoid |
| group of muscles on each side of the back | erector spinae |
| elevate ribs during inspiration | external intercostals |
| contract during forced expiration | internal intercostals |
| accomplishes quiet breathing | diaphragm |
| tendinous area of abdominal wall | linea alba |
| each side of linea alba | rectus abdominis |
| cross rectus abdominis | tendious inscriptions |
| rotates scapula | trapezius |
| pulls scapula anteriorly | serratus anterior |
| adducts and flexes arm | pectoralis major |
| medially rotates, adducts, & extends arm | latissimus dorsi |
| attaches humerus to scapula and clavicle | deltoid |
| extends forearm | triceps brachii |
| flexes forearm (anterior) | biceps brachii |
| flexes forearm | brachialis |
| flexes and supinates forearm | brachioradialis |
| covers flexor and extensor tendons | retinaculum |
| flexes wrist | flexor carpi |
| extends wrist | extensor carpi |
| flexes fingers | flexor digitorum |
| extends fingers | extensor digitorum |
| buttocks | gluteus maximus |
| posterior thigh muscles | hamstrings |
| calf muscle | gastrocnemius and soleus |
| lateral leg muscles | peroneus |
| 20 foot muscles | intrinsic foot |
| flexes thigh | sartorius |
| hip muscle | interossi |
Created by:
ayeoma1
Popular Anatomy sets