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
Chapter 6 Muscles
| Question | Answer |
|---|---|
| to develop tension, an ability highly developed in muscle cells | Contraction |
| muscle cells | Muscle fibers |
| Muscle composed of cylindrical multinucleated cells with obvious striations | Skeletal Muscles |
| The thin connective tissue surrounding each muscle cells | Endomysium |
| The connective tissue enveloping bundles of muscle fibers | Perimysium |
| the sheath of fibrous connective tissue surrounding a muscle | Epimysium |
| A bundle of nerve or muscle fibers bound together by connective tissue | Facicle |
| Muscle consisting of spindle shaped unstripped muscle cells | Smooth muscle |
| Specilized muscle of the heart | Cardiac muscle |
| The fine transparent tublar sheath which envelops the fibers of skeletal muscles | Sarcolemma |
| The smallest contactile unit of muscle | Sarcomere |
| one of the contractile protien fountin muscle | Myosin |
| a contractile protien | Actin |
| Specialized smooth endoplasmic reticulium | Carcoplasmic Reticulum |
| A motor and all the muscle cells it supplies | Motor unit |
| Neuron process that carries impulses away from the nerve cell body | Axon |
| A chemicle transmitter substance released by certian nerve endings | Acetylenoline |
| When a muscle is unable to contract even when stimulated | Muscle Fatigue |
| Same tone or tension | Isotonic Contractions |
| Same measurments or length | Isometric Contractions |
| Attachment of a muscle that remains reletivly fixed durning muscular contraction | Origin |
| The moveable attachment of a muscle as opposed to its origin | Insertion |
| Muscles cooperating with another muscle or muscle group to produce a disired movement | Synergists |
| Muscles that act in opposiion to a prime mover | antagonists |
| Muscles acting to immoblize a joint or bone | Fixators |
| another connective tissue layer located outside the epimysium | Fascia |
| enzymes that break down acetylcholine | acetylcholinesterase |
| sliding of actin myofilaments past myosin myofilaments during contraction | Sliding filament mechanism |
| a contracttion of an entire muscle in responce to stimulus. | Muscle twitch |
| the time between application of a stimulius to a motor neuron | lag phase |
| time of contraction | contraction phase |
| time of relaxion | relaxion phase |
| the muscle remains contracted without relaxing | tetany |
| the increase in number of motor units | recruitment |
| Adenosine triphosphate (needed for energy for muscle contraction, produced in the mitochondria, and short lived and unstable.) | ATP |
| Adenosine Diphosphate (plus phosphate) | ADP |
| when muscle cells cant stockple ATP at rest but can store other high energy molecules | Creatine phosphate |
| without oxygen | Anaerobic respiration |
| with oxygen | aerobic resperation |
| the amount of oxygen needed in chemical reactions to convert lactic acid to glucose | Oxygen debt |
| results when ATP is used during muscle contraction faster than it can be produced in the muscle cells. | Muscle fatigue |
| equal distance | Isometric |
| equal tension | Isotonic |
| constant tension produced by muscles | muscle tone |
| white meat | Fast twitch fibers |
| dark meat | Slow twitch fibers |
| the portion of muscle between the origin and the insertion | belly |
| How are muscles named? | location, size, orientation of fibers, shape, origin, insertion, and function |
| the zone between the A bands | H zone |
| The line that goes down the middle of the h zone | M line |
| Bands that are on either side of the H zone, and doesn't move when contracted | A band |
| The bands on either side of the Z line | I band |
| The lines that separate each section | Z line |
| raises eyebrows | occipitofrontalis |
| closes eyelids and causes "Crows feet" wrinkles on the outer corner of the eyes. | orbicularis oculi |
| pucker lips "Kissing muscle" | orbicularis oris |
| flattens cheecks "Kissing muscle" | buccinator |
| smiling muscle | zygomaticus |
| sneering | levator labii superioris |
| frowning | depressor anguli oris |
| chewing, 2 pair of pterygoids, temporalis, and masseter | mastication |
| whange the shape of the tongue | intrinsic tongue muscles |
| move the tongue | extrinsic tongue muscles |
| rotates and abducts the head, lateral neck miscle and prime mover | sternocleidomastoid |
| group of muscles on each side of the back , responsible for keeping body erect or head straight | erector spinae |
| muscles that move the thorax | thoratic muscles |
| elevate the ribs during inspiration | external intercostals |
| contract during forced expiration | internal intercostals |
| accomplishes quiet breathing | diaphragm |
| tendinous area of the abdominal wall | linea alba |
| on each side of the linea alba | rectus abdominis |
| cross the rectus abdominis at three or more places | Tendonous inscriptions |
| rotates scapula | Trapezius |
| pulls scapula anteriorly | serratus anterior |
| adducts and flexes the arm | Pectoralis major |
| medially rotates, addicts, nd powerfully extends the arm | Latissimus dorsi |
| attackes the humerus to the scapula and clavicle | deltoid |
| extends forearm, occupies the posterior compartment of the arm | Triceps branchii |
| occupies the anterior compartment of the arm, flexes the forearm | biceps branchii |
| flexes the forearm | branchialis |
| flexes and supinates the forearm | brachioradialis |
| covers flexor and extensor tendons | retinaculum |
| flexes wrist | flexor carpi |
| extends wrist | extensor carpi |
| flexes fingers | flexor digitorum |
| extends fingers | extensor digitorum |
| 19 hand muscles | intrinsic hand muscles |
| Buttocks | gluteus maximus |
| extends the leg, anterieor thigh muscles | quadriceps femoris |
| flexes the thigh | sartorius |
| posterior to the thigh muscles, flexes the leg and extends the thigh | hamstring muscles |
| form the calf muscle | gastrocneminus and soleus |
| achilles tendon, flex the foot and toes | calcaneal tendon |
| 20 muscles located in the foot | instrinsic foot muscles |
Created by:
bkedwar1