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Chapter 6
Cards
| Question | Answer |
|---|---|
| Contractility | muscle shorten with force |
| Excitability | reponse to stimulus |
| Extensibility | stretched |
| elasticity | recoil to orginal length |
| epimysium | connective tissue on muscles |
| Fascia | connective tissue outside the epimysium |
| perimysium | loose connective tissue |
| fibers | single muscle cells |
| endomysium | fiber is surrounded by thiis |
| myofibrils | Thread like structure from one end of a fiber to another |
| Resting membrane potential | charge difference across the membrane |
| Action Potential | brief reverseal back of the charge |
| Motor nerouns | nerve cells that carry action potientials |
| synapse | branch formed by muscles |
| motor unit | single neuron in fibers |
| presynaptic terminal | enlarged nerve terminal |
| Synaptic cleft | between the presynaptic |
| postsynaptic terminal | muscle fiber |
| synaptic vesicles | secrete the acetylcholine |
| Muscle twitch | contraction of a muscle |
| Lag Phase | time between application of a stimulus |
| Contraction phase | time of Contraction |
| Relaxation Phase | muscle relaxes |
| Tetany | Muscle remains contracted without relaxing |
| recruitment | motor units activating |
| Creatine Phosphate | high energy molecule |
| Anaerobic respiration | without oxygen |
| Aerobic respiration | with oxygen |
| Muscle Fatigue | muscle contracts faster than can produce |
| isometric | equal distance |
| isotonic | equal tension |
| Fast twitch | fatigue quickly |
| slow twitch | contract slow |
| Origin | head |
| Insertion | end of muscle |
| belly | between head and end |
| Occipitofrontalis | raises eyebrows |
| bcularis oculi | causes crows feet |
| orbicularis orbis | puckers the lips |
| buccinator | flattens cheeks |
| zygomaticus | smiling muscleowning |
| levator labii superioris | sneering |
| depressor anguli oris | frowning |
| mastication | chewing |
| intristic tounge | shape |
| extrinsic | movement |
| sternocleidomastoid | prime mover |
| plastysma | pulls mouth |
| erector spinae | back straight |
| thoracic muscle | move thorax |
| External Intercostals | elevate ribs during inspiration |
| Internal Intercostals | Contracted during forced expiration |
| Diaphragm | accomplishes quiet breathing |
| Abdominal wall Muscles | flex AND rotate vertebral columnn |
| Linea Alba | tendious area of wall |
| rectus abdominals | lines on each side of alba |
| Tendinous inscriptions | cross rectus |
| Trapezius | rotates Scapula |
| Serratus anterior | Pulls Scapula Anteriorly |
| Pectoralis Major | adducts and flexs the arm |
| Latissimus Dorsi | medaily rotates adducts and powerfully extends the arm |
| Deltoid | attaches the humerus to the scapula |
| Triceps brachii | extends forearm |
| Biceps brachii | flexes forearm anterior compartment |
| Brachialis | flexes forearm |
| Brachioradialis | flexes and supinates forearm |
| Retinaculum | bracelete |
| Flexor Carpi | flexes wrist |
| extensor carpi | extends wrist |
| flexor digtorum | flexes fingers |
| ectensor digtorum | extends fingers |
| Gluteus Maximus | Buttocks |
| Quadriceps femoris | extends leg |
| Sartorius | flexes thigh |
| Hamstring | postieror thigh muscle |
| Achillies tendon | flex toes |
| soleus | calf |
Created by:
Svhs16
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