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| 8474643380 | Types of Muscle Tissue | Skeletal Muscle Cardiac Muscle Smooth Muscle | 0 | |
| 8474643381 | Skeletal Muscle | - Striated or voluntary muscle - Microscope reveals crosswise stripes or striations - Contractions can be voluntarily controlled | 1 | |
| 8474646657 | Cardiac Muscle | - Composes bulk of heart - Cardiac muscle fibers branch frequently - Characterized by unique dark bands called intercalated disks ( striated) - Interconnected nature of cardiac muscle fibers allows heart to contract efficiently as a unit | 2 | |
| 8474646658 | Smooth Muscle | - Visceral or involuntary - Lacks cross stripes or striations when seen under a microscope; appears smooth - Found in walls of hollow visceral structures such as digestive tract, blood vessels and ureters - Contractions not under voluntary control; movement caused by involuntary contractions | 3 | |
| 8474652281 | Function | - All muscle fibers specialize in contraction (shortening) | 4 | |
| 8474659674 | Muscles produce movement | As a muscle contracts, it pulls the insertion bone closer to the origin bone Movement occurs at the joint between the origin and the insertion Groups of muscles usually contract to produce a single movement | 5 | |
| 8474666002 | Prime Mover | - muscle whose contraction is mainly responsible for producing a given movement | 6 | |
| 8474675589 | Synergist | - muscle whose contractions help the prime mover produce a given movement | 7 | |
| 8474675590 | Antagonist | - muscle whose actions oppose the action of a prime mover in any given movement | 8 | |
| 8474675591 | Functions of Skeletal Muscle | Movement Posture Heat Production | 9 | |
| 8474677877 | Tonic Contraction | - a specialized type of muscle contraction enabling us to maintain body position | 10 | |
| 8474680593 | Fever | - an elevated body temperature... often a sign of illness | 11 | |
| 8474691857 | Hypothermia | - a reduced body temperature... affects cellular activity and normal body functions | 12 | |
| 8474691858 | Composition | - mainly striated muscle fibers and connective tissue | 13 | |
| 8474691859 | Origin | - attachment to the bone that remains relatively stationary | 14 | |
| 8474691860 | Insertion | - attachment to the bone that moves when a muscle contracts | 15 | |
| 8474691861 | Body | - main part of the muscle | 16 | |
| 8474691862 | Bursae | - small synovial-lined sacs containing a small amount of synovial fluid; located between some tendons and underlying bones; makes it easier for a tendon to slide over a bone when contracted | 17 | |
| 8474691863 | Muscles attach to bone by... | tendons - strong cords of fibrous connective tissue; some tendons enclosed in synovial-lined tubes and are lubricated by synovial fluid, called tendon sheaths | 18 | |
| 8474701077 | Contractile Cells | Fibers - grouped into bundles | 19 | |
| 8474705609 | Fibers contain | Myofilaments | 20 | |
| 8474711257 | Thick Myofilaments | Contain the protein myosin | 21 | |
| 8474714149 | Thin Myofilaments | Composed of actin | 22 | |
| 8474725100 | Basic Functional (contractile) unit | Sarcomere | 23 | |
| 8474741555 | Sarcomeres separated from each other by dark bands called... | Z lines | 24 | |
| 8474741556 | Major functions of muscle | Movement Posture Heat Production | 25 | |
| 8474745908 | Twitch Contraction | - a quick, jerky response to a stimulus Do not play a significant role in normal muscular activity They are a single contraction of muscle fibers caused by a single threshold stimulus | 26 | |
| 8474748730 | Tetanic Contraction | - more sustained and steady response than a twitch Caused by a series of stimuli bombarding a muscle in rapid succession Contractions "melt" together to produce sustained contractions, or tetanus | 27 | |
| 8474748731 | Isotonic Contraction | - produces movement at a joint because the muscle changes length (most types of movements) | 28 | |
| 8474752608 | Concentric Contractions | - insertion end moves toward the point of origin | 29 | |
| 8474755935 | Eccentric Contractions | - produces tension as it lengthens and thus the insertion moves away from the origin | 30 | |
| 8474759166 | Isometric Contractions | - muscle does not shorten and no movement results | 31 | |
| 8474769445 | Exercising regularly and properly practiced improves... | muscle tone and posture, resulting in more efficient heart and lung functioning and reduces fatigue | 32 | |
| 8474774142 | Muscles change | In relation to the amount of work they do | 33 | |
| 8474780594 | Prolonged inactivity causes muscles to shrink, a condition called | atrophy | 34 | |
| 8474783690 | Regular exercise increases muscle size called | hypertrophy | 35 | |
| 8474786490 | Strength Training | Contraction of muscle against heavy resistance Increases the number of myofilaments Does not increase the number of muscle fibers | 36 | |
| 8474792706 | Endurance training (aerobic training) | Increases a muscle's ability to sustain exercise over a long period Allows more efficient delivery of oxygen and nutrients to a muscle via increased number of blood vessels to the muscle Does not result in muscle hypertrophy | 37 | |
| 8474795447 | Fatigue | Caused by repeated muscle stimulation without adequate periods of rest Reduces strength of muscle contraction | 38 | |
| 8474802459 | Oxygen debt | - causes lactic acid buildup and muscle soreness | 39 | |
| 8474815962 | How many muscles are their in the human body? | 50,100,000,701 muscles 200 muscles that might get discussed in a gym (pecs, biceps, quads) 100 muscles that are pretty obscure... any massage therapist still knows about them (little muscles of hands and feet; face) 400 muscles that are really obscure... but any specialist know about them (tongue, voice box, eyeball, pelvic) Several million hair raising muscles (arrector pili) Several billion smooth muscles cells blended together (organs, capillaries, GI tract) Exactly 1 heart muscle | 40 | |
| 8474837223 | Motor Unit | - a single motor neuron and the muscle fiber it innervates (stimulates) | 41 | |
| 8474866220 | Before a skeletal muscle can contract and pull on a bone to move it... | The muscle must first be stimulated by nerve impulses | 42 | |
| 8474866221 | Motor Neuron | specialized nerve that transmits an impulse to a muscle, causing contraction | 43 | |
| 8474866222 | Neuromusclar Junction | specialized point of contact between a nerve ending and the muscle fiber it innervates (stimulates) | 44 | |
| 8474853596 | Before a skeletal muscle can contract and pull on a bone to move it... | The muscle must first be stimulated by nerve impulses | 45 | |
| 8474727759 | Sarcomeres separated from each other by dark bands called... | Z bands | 46 |
