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List the largest and smallest muscles in the body:
- Largest: gluteus maximus
- Smallest: stapedius
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How many total muscles of the body are there?
600
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List three thing in which muscles consume:
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List the fxns of muscles
- Movement
- Convert ATP to mechanical energy
- Maintain posture
- Tension on joints
- Stability
- Anti-gravity
- Control openings
- Heat production
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List and describe the characteristics of muscles:
- Responsiveness- exciteability
- Cell membrane capable of dramatic electrical charge
- Conductivity - spreads thru muscle fibers
- Contractibility- shortens when stimulated
- Extensibility- stretch
- Elasticity- recoils when tension released
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Which of the following is not a fxn of muscles
E.
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Which of the following is NOT a major characteristic of muscles?
A.
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The attachment site of the muscles at the stationary point is called:
The origin
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The muscle attachment site of the end that moves, or allows motion is called:
The insertion
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The middle of the muscle is know as:
the belly
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The movement that muscles produce is called:
action
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List the three major muscle types:
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True/False: Each type of force generated is unique to each muscle types.
False- all pull, all contract
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True/False: muscles are independent systems that fxn independently to create movements.
False
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The muscle that produces the greatest amount of force is called the _____ and the ____ does most of the work.
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The muscle that assists the prime mover is called:
Synergist
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The muscle that opposes the prime mover is called the:
Antagonist
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The muscle that holds the bone in place, and prevents it from moving too far in one direction is called the:
Fixator
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Define tendons and give a description:
- Definition: connects muscle to bone
- Description: dense regular tissue, strong, compact
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Define aponeurosis and give an example:
- A broad tendon sheet, spreads out
- Example: exipalmer anponeurosis
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Define rentiaculum and give an example:
- Connective tissue that covers tissues, adds stability, helps stay in place, "little bracelet"
- Example: exiflexor rentiaculum
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List the criteria for naming muscles:
- A. Fiber direction - oblique, transverse, rectus
- B. Location - anterior/posterior
- C. Action- extensor
- D. Shape/size- longus, Magnus, brevis, orbit
- E. # of heads- bi, tri, quad
- F. Points of attachments
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Define the following terms of fiber direction and gave an example: oblique, transverse, rectus
- Oblique: fibers run at an angle Example: internal/external obliques
- Transverse: fibers run horizontal, or across. Example: transverse abs
- Rectus: fibers run vertically, or up and down. Example: rectus Abs
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List the layers of fibers from superficial or deep:
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Give two examples of muscles that are named based on it's action:
- Extensor digitorum - the muscle that goes to 4 digits
- Extensor digitorum minimus - moves just the 5th digit
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List some examples of muscles that are named based on shape:
- Deltoid: is named for the Greek letter delta, which looks like a triangle
- Trapezious: shape of a trapezoid
- Orbitocularis: orbit-"around"
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List some examples of muscles that are named based on size:
- Adductor longs - longest of the adductor muscles
- Adductor mangus - largest of the adductor muscles
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List some examples of muscles named based on the # of heads it has at it's origin:
- Biceps brachii - 2 heads
- Quadriceps femoris - 4 heads
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Name a muscle that is named based on it's points of attachment:
Sternocleomastoid - sternum, clavicle, insertion on the mastoid process
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List the 3 muscles that elevate the mandible:
- Temporalis - area of the temporal bone
- Masseter - mastication of food
- Medial ptergoid - crosses over the mandible from the maxilla area
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List 3 muscles that depress mandible:
- Lateral ptergoid
- Digastric
- Hyoids - suprahyoid/infrahyoid
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List the muscle that depresses the scapula:
Inferior Trapezious
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List the muscle that elevates he scapula:
- Superior Trapezious
- Leveator scapulae
- Rhomdoideous major and minor
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List the muscles that retract the scapula:
- Rambodiods major/minor
- Trapezious major/minor
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List the muscles that protract the scapula:
- Serratus anterior
- Pectoralis major
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List the Muscle that rotates the rotator cuff medially:
Subscapularis
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List the muscles that rotate the rotator cuff laterally:
- Teres minor
- Infraspinotois- below the spine of the clavicle
- Supraspinatois - above the line of the clavicle
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List the muscles that flex the arm/shoulder:
List the insertion point:
- Deltoid
- Pectoralis major
- Coracobrachialis - interior muscle, medial to the humerus
- Insertion: humerus
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List the muscles that extend the arm/shoulder:
List the insertion point:
- Deltoid
- Teres major
- Latissimus Dorsi
- Insertion: humerus
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List the muscles that flex the forearm:
- Brachilais
- Biceps brachii
- Brachiradialis
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List the muscles that extend the forearm:
Triceps brachii
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List the muscles that flex the wrist/fingers:
- Flexor carpi radialis
- Flexor carpi ulnaris
- Palmaris lomgus
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List the muscles that extend the wrist/fingers:
- Extensor carpi radialis
- Extensor carpi ulnaris
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List the muscles that adduct the thigh: list the origin:
- Pectineus- highest one, means pectin or protein
- Adductor magnus
- Adductor bervis
- Adductor longus
- Gracillis
- Origin: the hip
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List the muscles that abduct the thigh:
List the origin:
Act on:
- Gluteus maximus
- Gluteus medius
- Gluteus minimus
- Piriformis
- Gemellis
- Origin: hip
- Act on: femur
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List the muscles that flex the knee:
The name of the group:
- Biceps femoris
- Semitendonsis
- Semimembraneous
- Popiteal fossa
- Group: hamstrings
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List the muscles that extend the knee:
Name the group:
Located:
Insert:
- Rector femoris
- Vastus lateralis
- Vastus medialis
- Bastia intermedalis
- Name: quadriceps
- Location: anterior
- Insert: tibia
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List the muscles that dorisflex the foot:
- Tibialis anterior
- Extensor digitorum longus
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List the muscles that plantarflex the foot:
- Flexor digitorum longus
- Gastronomium
- Soleus
- Fibularis longus
- Fibularis brevis
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Put the following structures in order from deep to superficial: endomysium, epimysium, perimysium, fascia.
Describe each layer
- Endomysium: Loose connective tissue, surrounds each muscle fiber
- Perimysium: Thick connective tissue, bundles muscle fibers together into fascicles
- Epimysium: surrounds the entire group of muscles with fiberous connective tissues
- Fascia: separates neighboring muscles or muslce groups from each other
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Individual skeletal muscle fibers are surrounded by a connective tissue layer called the
A)
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Which of the following terms is used to describe a broad, sheet-like tendon?
B)
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A tendon is a continuation of collagen fibers of the ________________.
B)
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Paralysis of which of the following would result in your often biting the inside of your cheek?
D)
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Which muscle is used to open the mouth quickly to spit out something that is burning your tongue?
C)
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Which of the following muscles is a flexor of the neck?
C)
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The four major muscles of mastication insert on what structure?
C)
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A surgeon making an incision exactly in the midline of the abdomen would be cutting through
D)
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The diamond-shaped region that is located between the thighs is called the
D)
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Removal of which of the following may be necessary to relieve symptoms of carpal tunnel syndrome?
A)
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Which of the following muscles is not attached to the scapula?
D)
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All of the following are rotator cuff muscles except the
B)
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This muscle assists in both flexion of the hip and extension of the knee.
C)
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The muscles in the anterior compartment of the thigh are mainly responsible for
D)
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All of the following are considered "hamstring" muscles except the
C)
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Which of the following muscles inserts onto the calcaneus?
D)
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List the structure of skeletal muscle from gross to microscopic levels:
- Fascicle: bundles of muscle fibers, visible to the naked eye as paralle strands (grain in meat)
- Myofibers: ( muscle fibers)
- Myofibrils: arragned in sacromeres
- Myofilaments: bundle of paralle protein microfilaments (thick/thin)
- Myosin/actin molecules: myosin - shaped like a golf club head, with shaftlike tail actin- shaped like a bead necklace
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