shoulder, chest, arm, stomach, back muscles in the upper extremity
TRANSCRIPT
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Shoulder, Chest, Arm, Stomach, Back
Muscles in the Upper Extremity
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Shoulder Muscles
Trapezius DeltoidRotator Cuff
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Trapezius (Traps)Function: Raises
head and shoulders
Origin: back of the neck and upper vertebrate
Insertion: clavicle and scapula
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Deltoid (Delts)Function: Raises
the arm
Origin: the spine of the scapula and the clavicle
Insertion: the top of the humerus
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Rotator Cuff Known of the SITS muscles
S - Superspiatus
I - Infraspinatus
T - Teres Minor
S - Subscapularis
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BackRhomboidsLatissimus DorsiErector SpinaeQuadratus Lumborium
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RhomboidsFunction: (deep
muscle) extends the scapula(under the teres major)
Origin: thoracic vertebrae
Insertion: front of scapula
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Latissimus Dorsi (Lats)Function: moves
the arm backward
Origin: lumbar vertebrae
Insertion: humerus
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Erector SpinaeFunction: straightens
the back
Origin: lower thoracic vertebrae and top of pelvis
Insertion: back of ribs and upper thoracic vertebrae
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Quadratus LumborumFunction: Elevates
the hip and abducts the hip
Origin: back of ribs and upper thoracic
Insertion: vertebrae lower thoracic vertebrae and top of pelvis
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Chest Muscles
Pectoralis MajorPectoralis Minor
Serratus Anterior
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Pectoralis Major (Pecs)Function: Moves
the arm across the chest
Origin: sternum and clavicle
Insertion: medial and lateral top of the humerus
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Pectoralis MinorFunction: Moves the
arm from a raised position down across the chest to the opposite hip
Origin: coricoid process of the scapula
Insertion: 3rd, 4th and 5th ribs
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Serratus AnteriorFunction: Moves
the scapula forward
Origin: upper ribs / side of the ribs
Insertion: scapula
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Quiz1. Name one of the two parts of muscle.2. The place where a muscle is anchored is
called what? 3. The temporalis and the masseter work
together to perform what function? 4. Name two of the six muscles of the
shoulder and back.5. What muscle group works in a pair with
your Lats (Latissimus Dorsi)?
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Quiz/Review1. Name one of the two parts of muscle.
Tendon, Belly2. The place where a muscle is anchored is called what?
Origin3. The temporalis and the masseter work together to
perform what function? Move the lower jaw
4. Name two of the muscles of the shoulder and back.Traps, Delts, Rotator cuff, Lats, Erector Spinae,Rhomboids
5. What muscle group works in a pair with your Lats (Latissimus Dorsi)?
Pecs (Pectoralis Major)
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Arm Muscles
BicepsTricepsBrachioradialisFlexor CarpiExtensor Carpi
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BicepsFunction: flexes
arm (anterior)
Origin: side of the scapula
Insertion: radius/ulna
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TricepsFunction:
extends/straightens arm (posterior)
Origin: side of the scapula and the humerus
Insertion: upper ulna
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BrachioradialisFunction: flexes the
elbow
Origin: lateral epicondyle of humerus
Insertion: radius
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Flexor CarpiFunction: Closes the
hand and fingers and flexes the wrist (anterior)
Origin: medial epicondyle of humerus
Insertion: metacarpals
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Extensor CarpiFunction: Opens the
hand and fingers and extends the wrist (posterior)
Origin: lateral epicondyle of humerus
Insertion: metacarpals
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Stomach & AbdomenRectus Abdominis
Abs
External Obliques
Internal Obliques
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Rectus AbdominisFunction: flexes
trunk of the body & pulls ribs to pelvis
Important for posture
Origin: front of pelvis
Insertion: front of ribs
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ObliquesExternal Oblique:
flexes the trunk of the body and twists torso
Origin: lower ribs
Insertion: top of pelvis
Internal Oblique: Same as external, except a deeper set of muscles