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Definition
moves a bone away from the midline |
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moves a bone closer to the midline |
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condition in which a muscle opposes or resists the action of another muscle |
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sheetlike tendon of a muscle |
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tetrapods that travel far or fast on the land |
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produces a downward movement |
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posture in which the wrist and ankle are carried off the ground and the animal walks its digits |
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pertaining to structures that lie above or beside the vertebral axis |
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increases the angle at a joint |
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sheets of connective tissue that lie beneath the skin or ensheathe groups of muscles |
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decreases the angle at a joint |
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use of wings to actively sustain movement through the air |
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tetrapods that are adept at digging, and live a somewhat subterranean existence |
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use of broad membranes attached to limbs to increase surface area and travel a greater horizontal distance through the air |
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pertaining to structures that lie ventral to the vertebral axis |
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the point of attachment of a muscle that moves the most when the muscle shortens, or most distal end of limb muscles |
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produces an upward movement |
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the end of a muscle that attaches to the more fixed part of the skeleton, which is the proximal in limb muscles |
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propel themselves through the water with paddle-like movements of the appendages |
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use of limbs and body to increase overall surface area to break an inadvertent fall |
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posture in which the soles of the feet are placed flat on the ground during locomotion |
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species for which swimming is the sole pattern of locomotion |
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junction of two muscles at a band of connective tissue to form a line of fusion, such as linea alba |
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moves a bone around its longitudinal axis |
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tetrapods that jump or hop |
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tetrapods adept at climbing |
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species which have readapted completely or partially to an aquatic mode of life from a terrestrial life |
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decreases the size of an opening |
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turns the palm upward or anteriorly |
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condition in which the muscles work together to produce a common effect |
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makes a body part more rigid |
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use the musculature of the fins only, or the fins in combination with the trunk and tail, to propel themselves through the water |
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a locomotory posture used by long legged tetrapods, which walk only on the tips of the digits such that the terminal end of the digit is modified to form a hoof, and other digits are lost |
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Muscular tissue functions in |
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Definition
-movement and locomotion -maintaining posture/vertical position -generate heat -can be modified to other structures as (electric organs) |
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composed of actin, tropomyosin, and troponin |
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Criteria for classifying muscles and include |
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Definition
-color -location -nervous system control -embryonic origin -general microscopic appearance |
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Classifying muscles by color |
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Definition
-red (highly vascularized and rich in myoglobin; resist fatigue -white (low vascularization and lower in myoglobin; quicker to fatiuge) |
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Classifying muscles by location |
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Definition
-somatic (move bone or cartilage) -visceral (control activities of organs, vessels, or ducts) |
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Classifying muscles by nervous system control |
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Definition
-voluntary (under immediate conscious control) -involuntary (are not) |
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-found lining the walls of blood vessels, visceral organs |
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Two types of smooth muscle |
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Definition
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smooth muscle has self-initiated or myogenic contraction to aid in sustaining rythmic movement of organ with which it is associated |
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smooth muscle has neurogenic contraction, which requires action potential sent by neurons to regulate its action |
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-found in musculature of heart wall -branching of the cells increase its overall connectivity -doesn't fatigue readily |
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-closely associated with muscle skeleton and are used in locomotion |
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-muscle cell or fiber -muscle organ |
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the active contractile component: muscle cells and their endomysium |
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the whole organ; muscle cells plus asssociated connective tissues, nerves, blood supply |
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In the shortest (longest) position, filament overlap interferes (very little with few) with cross-bridge formation and tension is ____ |
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T/F: Intermediate lengths generate maximum cross-bridging |
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-relatively slow contracting and produce low force -can sustain contraction for prolonged periods of time -comprise most of the axial and appendicular skeleton |
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-generally produce fast contractions so they often make up muscles used for rapid movement -slow twitch but slow take 2x longer to reach maximum forces |
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-Mesenchyme -Splanchnic layer of lateral plate mesoderm -paraxial mesoderm (somites) |
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Adductor mandibulae Intermandibuularis |
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Second Fishes gill arch (and 3-7) |
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masseter tempralis pterygoids diagastric mylohyoid |
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moves skin of face and neck |
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sternomastoid cleidomastoid |
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Sternomastoid Cleidomastoid |
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hyoglossus, styloglossus, genioglossus |
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Epaxial muslces of tetrapod |
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Definition
-longissimus dorsi -iliocostalis -multifidus spinae -spinalis dorsi |
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Hypaxial muscles of tetrapod |
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Definition
Rectus abdominis Internal oblique External oblique |
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Definition
serratus scalenus diaphragm intercostals |
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separates the thoracic/abdominal cavities, functions in breathing |
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-reduce the resistance that water offes to motions of moving the body -propel themselves in a relatively dense medium -control vertical position in the water -maintain orientation and steer the body |
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Characteristics of primary swimmers |
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Definition
-fusiform body -segmented myomeres -integument attached strongly |
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have paddle-like movements oscillatory swimmers |
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Characteristics of secondary swimmers |
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Definition
-undergo secondary adaptations to circulatory/respiratory and sensory systems to tolerate high pressures -webbing or flippers to assist propulsion -well developed appendicular musculature |
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