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Anatomy > Muscles > Flashcards

Muscles Flashcards

0
Q

Internal oblique

A

I: iliac crest
O: costal cartilage of ribs 7-10 and inferior surfaces of 9-12 and Lina alba
A: both contracts- flexion of spine and compression of spine
One contracts - lateral flexion and rotation of lumbar spine to the same side

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1
Q

External oblique

A

O: rib 5-12
I: iliac creation of coral bone and alba (midline of aperneurouses)
A: if both contract flexion of the spine ( compression of abdomen)
One contacts lateral flexion and rotate lumbar spine to opposite side

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2
Q

Transversus abdominis

A

O: Iliac crest and costal cartilage of 5-10 ribs
I: xiphoid process, Lina alba and pubis
A: compression of abdomen

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3
Q

Quadratus lumborum

A

O: iliac crest
I: 12th rib and transverse processes of L1-L4
A: both contract: extension of lumbar spine
One contract: lateral flexion of lumber spine to the same side

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4
Q

Diaphragm

A

O: xiphoid process of sternum, costal cartilage of last 6 pairs of ribs, lumbar vertebrae and their discs
I: central tendon of aponeurosis
A: flattens muscle and allows more air to fill the lungs (inhalation ) and when it relaxes it push air out of the lungs (exhalation)

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5
Q

External intercostal

A

O: inferior boarder of ribs above
I: superior boarder of ribs below
A: elevation of ribs which cause increase in dimensions of thoracic cavity, resulting in inhalation - relaxation causes exhalation

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6
Q

Internal Intercostal

A

O: superior border of rib below
I: inferior border of rib above
A: depression of ribs: causes forced exhalation because the thoracic cavity decreases in dimension

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7
Q

Subclavius

A

O: first rib
I: clavicle
A: depresses and moves clavicle anteriorly helps stabilization pectoral girdle

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8
Q

Pectoralis minor

A

O: ribs 2-5
I: coracoid process of scapula
A: abducts and rotates scapula downward, elevates ribs during forced exhalation when scapula is fixed.

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9
Q

Serratus anterior

A

O: Superior 8-9 ribs
I: vertebral border and inferior angle of scapula
A: abducts and rotates scapula upward, elevates ribs when scapula is fixed

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10
Q

Trapezius

A

O: occipital bone and spinous process of c7- t12
I: clavicle and spine and acromion of scapula
A: superior fibres- elevates clavicle and scapula and rotates scapula upward
Middle fibres - addict scapula
Lower fibres - depress and rotates scapula upward

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11
Q

Levator scapulae

A

O: transverse process of c1-c4
I: vertebral border of scapula ( above spine)
A: elevates scapula and rotates slightly downward

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12
Q

Rhomboid major (diamond shaped)

A

O: spin is process of T2-T5
I: vertebral border of scapula ( below spine)
A: addicts, elevates, slightly rotates downward and stabilizes scapula

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13
Q

Pectoralis major

A

O: clavicular head and sternocostal head
I: lateral edge of intertubercular sulcus and greater tubercle of the humerus
A: flexes, addicts, medically rotates arm at the shoulder joint

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14
Q

Latissimus dorsi

A

O:Spinous process of t7-L5 edia. Sacral Crest, iliac crest and inferior 4 ribs
I: intertubercular sulus of humerus
A: extends, addicts, medially, rotates arm at the shoulder joints

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15
Q

Deltoid

A

O: acromial end of clavicle and acromion and spine of scapula
I: deltoid tuberosity of humerus
A: lateral fibres - abducts arm at shoulder joint
Anterior fibres: flex and medially rotate arm
Posterior fibres - extends and laterally rotates arm at shoulder joint.

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16
Q

Subscapularis

A

O: sub scapular fossa of scapula
I: lesser tubercle of humerus
A: medially rotates arm at shoulder joint

17
Q

Supraspinatus

A

O: superspinous fossa of scapula
I: greater tubercle of humerus
A: abducts arm at shoulder joint

18
Q

Teres major

A

O: inferior angle of scapula
I: medial edge of the intertubercular groove of humerus
A: extend, addicts and medial rotates arm at shoulder joint.

19
Q

Teres minor

A

Inferior portion of lateral boarder of scapula
I: greater tubercle of humerus
A: rotates arm laterally and extends and addicts arm at shoulder joint

20
Q

Biceps brachii

Brachii= arm

A

O: long head- just above the glenoid cavity of the scapula
Short head - coracoid process of the scapula
I: radial tuberosity of the radius
A: flexes forearm at elbow joint, supinates forearm at radioulnar joint, flexes arm at shoulder joint

21
Q

Brachialis

A

O: distal anterior surface of humerus
I: coronoid process of the ulna
A: flexes forearms at elbow joint

22
Q

Brachioradialis

A

O: distal lateral surface of humerus
I: superior to stylish process of radius
A: flexes forearm at elbow joint supinates or probated forearm at radioulnar joints to neutral position

23
Q

Triceps brachii

A

O: Long head- inferior to glenoid cavity of scapula
Lateral head - lateral and posterior surface of humerus
Medial head - posterior surface of humerus
I: olecranon of ulna
A: extends forearm at elbow joint and extends arm at shoulder joint

24
Q

Pronation teres

A

O: medial epicondyle of the humerus and coronoid process of the ulna
I: mid lateral surface of radius
A: pronates forearm at radioulnar joint and weakly flexes forearm at elbow joint

25
Q

Supinator

A

O: Lateral epicondyle of humerus and just posterior to radial notch of ulna
I: lateral surface of proximal 1/3 of radius
A: supinates (turns to face anteriorly) forearm at the radioulnar joints

26
Q

Flexor carpi radialis

A

O: medial epicondyle of humerus
I: 2nd and 3rd metacarpals
A: flexes and abducts hand at wrist joint

27
Q

Palmers longus

A

O: medial epicondyle of humerus
I: flexor retinaculum and palmar aponeurosis ( sheet of connective tissue in Palm)
A: weakly flexes hand at wrist joint

28
Q

Flexor carpi ulnaris

A

O: medial epicondyle of humerus and superior posterior surface of ulna
I: pisiform, hamate and base of the 5th metacarpal
A: flexes and adducts hand at wrist Joint

29
Q

Flexor digitorum superficialis

A

O: medial epicondyle of humerus, coronoid process of ulna and anterior surface of shaft of radius
I: branches into 4 tendons of insertion - they insert on the middle phalanges of distal ii and v
A: flexes middle phalanges of digits ii and v

30
Q

Flexors digitorum profundus

A

O: anterior medial surface of shaft of ulna
I: branches into 4 tendons of insertion - they insert on (bases of ) distal phalanges of digits ii and v
A: flexes distal phalanges of digits ii and v

31
Q

Extensor carpi radialis longus

A

O: lateral supracondylar ridge of humerus
I: 2nd metacarpals
A: extends and abducts hand at wrist joint

32
Q

Extensor carpi radialis brevis

A

O: lateral epicondyle of humerus
I: 3rd metacarpals
A: extends and abducts hand at wrist joint

33
Q

Extensor digitorum

A

O: lateral epicondyle of humerus
I: branches into 4 tendons of insertion - inserts on middle and distal phalanges of distal ii to v
A: extends middle and distal phalanges

34
Q

Extensor carpi ulnaris

A

O: lateral epicondyle of humerus and posterior boarder of the ulna
I: v metacarpal
A: extends and adducts hand tat wrist joint

35
Q

Intrinsic muscles of the hand

A

Move tumb and are called thenar nucleus

36
Q

Psoas major

A

O: transverse process and bodies of lumbar vertebrae
I: with tendons of iliacus into the lesser trochanter of femur
A: flexes thigh at the hip joint, rotates thigh laterally, flexes trunk on the hip as in sitting up

37
Q

Iliacus

A

O: iliacus fossa of the costal bone and sacrum
I: with tendon of psoas major into the lesser trochanter of the femur
A: flexes thigh at the hip joint, rotates thigh laterally, flexes trunk on the hip as in sitting

38
Q

Gluteus medius

A

O: ilium of coxal bone
I: greater trochanter of the femur
A: abducts and rotates thigh medially at the hip joint

39
Q

Gluteus Maximus

A

O: iliac crest of costal bone, sacrum and coccyx
I: upper 1/4 into gluteal tuberosity of femurs, lower 3/4 into iliotibial tract ( a vertical band of connective tissue that attaches to the lateral condyle of the tibia)
A: extends and rotates thigh laterally at the hip point

40
Q

Tensor fasciae latae

A

O: iliac crest of coxal bone
I: iliotibial tract (which attaches to the lateral condyle of tibia)
A: flexes and abducts the thigh at hip joint

Anatomy (3 decks)

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