Presentation on theme: "Muscle Info… General Info: -Muscles constantly pull and never before push bones…"— Presentation transcript:
You are watching: Muscles are only able to pull they never push
1 Muscle Info… General Info: -Muscles always pull and also never press bones…***Meaning during a joints motion phase muscles causing the activity can only pull the bones toward each other…they cannot push the bones towards each various other. Example: -Elbow flexion *Muscle responsible is the biceps brachii (prime mover). *Pulls insertion in the direction of beginning radial tuberosity toward the coracoid procedure Triceps Brachii (antagonist): -This muscle does not “push” the joint open up throughout muscle contraction… in this instance it does permit the action to occur…
2 Muscle Movements… Muscle Movements:Prime mover – Muscle with the major responsibility for a particular motion Antagonist – Muscle that opposes or reverses the action of a prime mover Synergist – Muscle that aids a prime mover in a activity ***Synergists execute a similar activity to the prime mover, however to a lesser degree ***Synergists also assist mitigate unpreferable movements… (muscles that stabilize the wrist during elbow flexion) Fixator Muscles – Stabilizes one part of the body in the time of the movement of an additional ***Specifically stabilizes the origin bone throughout movement. ***Examples would certainly be the erector spinea team of muscles that save you upideal throughout activity
3 Naming Muscles… 1) Direction of the Muscle Fibers:- Named in referral to an imaginary line (commonly the midline of the body) *** Example: 1) Rectus suggests “Straight” - Rectus Femoris = muscle fibers of the thigh run parallel to that imaginary line 2) Obliques suggests neither parallel nor perpendicular to the long axis of a body or limb - External Obliques = muscle fibers run at an “angle” to the midline
4 Naming Muscles… 2. Relative Size of the Muscle Maximus = largestMinimus = smallest Longus = longest *** Example: 1) Gluteus Maximus: - Largest of the gluteal muscles (medius / minimus) 2) Gluteus Minimus: - Largest of the gluteal muscles 3) Extensor Pollicus Longus: - Longest of the extensor muscles of the posterior reduced arm.
5 Naming Muscles… 3. Location of the MuscleNamed for the bone via the muscles are associated . *** Example: Temporalis = Overlies the tempdental bamong the skull Femoris = Overlies the femur Anterior Tibialis= Overlies the anterior portion of the tibia Sternocliedomastoid= Overlies the sternum, clavicle and mastoid procedures 4. Number of Origins Name based on the number of attachment sites (heads) that it has via bones *** Example: Biceps = 2 beginnings Triceps = 3 beginnings Quadriceps = four origins
6 Naming Muscles… 5. Location of the Muscle’s Origin and InsertionNamed for their attachment sites to bones. *** Example: Sternocleidomastoid Origin on sternum (Sterno—) and Clavicle (—cleido—) Insertion on mastoid process of tempdental bone (—mastoid) 6. Shape of the Muscle Named for the distinctive form that some muscles have. *** Example: Deltoid: Deltoid implies “triangular” Rhomboideus Minor: Rhomboid shaped muscle “A four-sided shape wright here all sides have actually equal size, likewise opposite sides are parallel and opposite angles are equal.
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(discovered deep to tapezium, which would be an additional excellent exmaple)
7 Naming Muscles… 7. Action of the MuscleNamed for actions such as flexion, extension, adduction and also abduction… *** Example: Adductor Longus= adducts the femur Extensor Digitorum Longus = Exhas a tendency the fingers (discovered on posterior forearm area) Extensor Digitorum Longus: = Extends the fingers (uncovered on posterior forearm area)