fibers parallel to the long axis of muscle

What term refers to a muscle that aids another muscle by producing the same the movement or reducing undesirable movements?

The point of muscle attachment to an immovable or less movable bone is known as the ________.

Muscles that perform opposite actions to one another are termed ________.

The arrangement of fascicles in orbicularis oris is ________.

The arrangement of fascicles in pectoralis major is ________.

The arrangement of fascicles in the biceps brachii is ________.

The arrangement of fascicles in the deltoid is ________.

Identify letter B

Identify letter A

Identify letter D

Identify letter E

The bone that does not move through it is attached to the muscle of interest is known as the

The muscle that opposes a action is called a(n) __________.

A muscle that provides a small amount of force for an action to occur is called a(n) __________

If the fulcrum is in the middle of the lever what class is it?

If the effort is in the middle of the lever what class is it?

If the load is in the middle of the lever what class of lever is it?

abducts little finger

flexes little finger

adducts thumb

abducts fingers

flexes thumb

flex metacarpophalangeal joints, extend interphalangeal joints

opposition of thumb

adduct fingers

moves skin on medial border toward midline of palm

O: cartilages of ribs 6-12, iliac crest, and lumbodorsal fascia

I: linea alba and pubis

A: compresses abdomen

O-lumbodorsal fascia and iliac crest,

I-inferior ribs, xiphoid process, and linea alba,

A-compresses abdomen, depresses ribs, flexes or bends spine

O-clavicle and scapula,

I-deltoid tuberosity of humerus,

A-whole muscle: abduction at shoulder; anterior part: flexion and medial rotation; posterior part: extension and lateral rotation

O-clavicle and scapula,

I-deltoid tuberosity of humerus,

A-whole muscle: abduction at shoulder; anterior part: flexion and medial rotation; posterior part: extension and lateral rotation

O-cartilages of ribs 2-6, body of sternum, and inferior, dedial portion of clavicle,

I-crest of greater tubercle and lateral lip of intertubercular groove of humerus;

A-flexion, adduction, and medial rotation at shoulder

O-cartilages of ribs 2-6, body of sternum, and inferior, dedial portion of clavicle,

I-crest of greater tubercle and lateral lip of intertubercular groove of humerus;

A-flexion, adduction, and medial rotation at shoulder

O-external and inferior borders of ribs 5-12,

I-linea alba and iliac crest,

A-compresses abdomen, depresses ribs, flexes or bends spine

O-superior surface of pubis around symphysis,

I-inferior surfaces of costal cartilages (ribs 5-7) and xiphoid process,

A- depresses ribs, flexes vertebral column, compresses abdomen

O-inferior border of each rib,

I-superior boarder of more inferior rib,

A-elvate ribs

O-anterior-superior surfaces of ribs 2-4, 2-5, or 3-5, depending on anatomical variation,

I-coracoid process of scapula,

A-depresses and protracts shoulder; rotates scapula so glenoid cavity moves inferorly (downward rotation); elevates ribs if scapula is stationary

O-spinous processses of vertebrae C7-T1,

I-vertebral border of scapula near spine,

A-adducts scapula and performs downward rotation

O-xiphoid process, cartilages of ribs 4-10, and anterior surfaces of lumbar vertebrae,

I-central tendinous sheet,

A-contraction expands thoracic cavity, compresses abdominopelvic cavity

origin-transverse processes of C1-C4,

insertion-medial border of scapula superior to spine,

action-elevates and adducts scapula

origin-occipital bone and spinous processes of thoracic vertebrae,

insertion-clavicle and scapula,

action-elevate, retract, depress, or rotate scapula upward, elevate clavicle, or extend neck

Origin-clavicle and scapula,

Insertion: humerus,

action-abduction at shoulder

origin-spines of upper thoracic vertebrae,

insertion: medial border of scapula,

action-raises and adducts scapula

origin-supraspinous fossa of scapula,

insertion: greater tubercle of humerus,

action-abduction at shoulder

origin-infraspinous fossa of scapula,

insertion-greater tubercle of humerus,

action-lateral rotation at shoulder

origin-lateral border of scapula,

insertion-greater tubercle of humerus,

action-lateral rotation at shoulder

origin-inferior angle of scapula,

insertion-intertubercular groove of humerus,

action-extension, adduction, and medial rotation at shoulder

origin-lateral margin of humerus and tubercle of scapula,

insertion-olecranon of ulna,

action-extension at elbow and extension and adduction at the shoulder

origin-spinous processes of inferior thoracic and all lumbar vertebrae, ribs 8-12, and lumbodorsal fascia,

insertion-intertubercular groove of the humerus,

action-extension, adduction, and medial rotation at shoulder

origin-lateral supracondylar ridge of humerus,

insertion-base of second metacarpal bone,

action-extension and abduction at wrist

origin-lateral epicondyle of humerus,

insertion: digits 2-5,

action-extends digits 2-5

Origin-medial epicondyle of humerus, Insertion-Bases of second and third metacarpal bones, Actions-Flexion and abduction at wrist

origin-medial epicondyle of humerus,

insertion-palmar aponeurosis,

action-flexion at wrist

Origin-Medial epicondyle of the humerus,

Insertion-5th metacarpal,

Action-Flexion and adduction at wrist

origin-subscapular fossa of scapula,

insertion-lesser tubercle of humerus,

action-medial rotation at shoulder

Origin-Iliolumbar ligament and iliac crest,

Insertion-Inferior border of twelfth rib and transverse processes of L1-L4,

Action-together they depress ribs, alone each side laterally flexes vertebral column

Origin-Spinous processes of inferior cervical and superior thoracic vertebrae,

Insertion-Mastoid process, occipital bone and transverse processes of superior cervical vertebrae,

Action-Laterally flexes, rotates, and extends head and neck

Origin-sacrum, iliac crest,

Insertion-inferior surface of lower 7 rib,

Action-extend spine, depress ribs

Origin-transverse and costal processes of cervical vertebrae,

Insertion-superior surfaces of first two ribs,

Action-elevate ribs or flex neck

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extends wrist and abducts hand

extends fingers and the wrist

flexes wrist and abducts hand

flexion of wrist

flexes and adducts wrist

medial rotation at shoulder

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Label A

label B

Label C

Identify the muscle

Identify the muscle

Identify the muscle

Identify the muscle

Identify the muscle

Identify the muscle

Identify the muscle