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Bio 223 > Lecture 12 (SECOND MIDTERM) > Flashcards

Lecture 12 (SECOND MIDTERM) Flashcards

1
Q

Homolog of triceps =

A

quadriceps

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2
Q

Homolog of pectoral group =

A

adductors

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3
Q

Homolog of deltoid =

A

glutei

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4
Q

Homolog of brachii =

A

hamstrings

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5
Q 
Brachial plexus...
Dorsal scapular nerve:
Nerve to subclavius:
Suprascapular:
Pectoral (medial and lateral):
A

Dorsal scapular nerve: C5
Nerve to subclavius: C5-C6
Suprascapular: C5-C6
Pectoral (medial and lateral): C5-T1

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6
Q 
Brachial plexus...
Subscapular:
Thoracodorsal:
Axillary:
Medial antibrachial cutaneous:
A

Subscapular: C5-C6
Thoracodorsal: C6-C8
Axillary: C5-C6
Medial antibrachial cutaneous: C8-T1

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7
Q 
Brachial plexus...
Musculocutaneous:
Median:
Ulnar:
Radial:
A

Musculocutaneous: C5-T1
Median: C6-T1
Ulnar: C8-T1
Radial: C5-T1

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8
Q

What is a “weird” muscle that doesn’t receive innervation from brachial plexus?
What kind of muscle is it?

A

Trapezius

Branchial

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9
Q 
Trapezius...
Origin:
Insertion:
Innervation:
Action:
A

Origin: occipital bone, spines of C7-T12
Insertion: acromion, spine of scapula, lateral 1/3 of clavicle
Innervation: accessory nerve (cranial nerve XI)
Action: extension of the head, elevation and depression of scapula and gleaned

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10
Q

Evolutionary grouping of the trapezius:

A

branchial

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11
Q 
Serratus anterior...
Origin:
Insertion:
Innervation:
Action:
A

Origin: first 9 ribs
Insertion: medial edge of scapula’s deep surface
Innervation: long thoracic nerve
Action: rotates and protracts scapula, also elevates glenoid

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12
Q

The borders and angles of the scapula, the scapular spine, the deep surface of the scapula (subscapular fossa) all belong to what division?

A

Dorsal

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13
Q

Since latissimus dorsi doesn’t attach to the scapula, it is…

A

caudal

and dorsal

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14
Q

What is on the “opposite side” of the latissimus dorsi and works in a synergist way?

A

pectoralis major

adducts and medially rotates humerus

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15
Q

Pectoralis major is so big that it crosses 2 boundaries, making it part of 2 quadrants. What are they?

A

cranial/ventral

caudal/ventral

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16
Q 
The clavicular head of the pectoralis major...
Quadrant:
Origin:
Insertion:
Innervation:
A

Quadrant: cranial/ventral
Origin: inferior margin of clavicle
Insertion: greater tubercular crest of humerus
Innervation: medial and lateral pectoral nerves

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17
Q 
the sternal head of the pectoralis major...
Quadrant:
Origin:
Insertion:
Innervation:
A

Quadrant: caudal/ventral
Origin: ventro-lateral margin of sternum, costal cartilages 1-6
Insertion: greater tubercular crest of humerus
Innervation: medial and lateral pectoral nerves

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18
Q 
Pectoralis minor...
Quadrant:
Origin:
Insertion:
Innervation:
Function:
A 
Quadrant: cranial/ventral
Origin: ribs 3-6
Insertion: coracoid process of scapula
Innervation: medial pectoral nerve
Function: stabilization of scapula
19
Q

Medial and lateral cords only have what division neurons in them?

A

ventral division

20
Q

The scapular spine is a derivative of…

A

the acromion

21
Q

Teres major was originally a “piece” of…

A

latissimus dorsi

22
Q 
Teres major...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A

Quadrant: cranial/dorsal
Origin: inferior angle of scapula
Insertion: lesser tubercular crest/groove
Action: extends, adducts, and medially rotates humerus
Innervation: lower subscapular

23
Q 
Subscapularis...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: cranial/dorsal
Origin: subscapular fossa of scapula
Insertion: lesser tubercle
Action: medially rotates humerus
Innervation: upper and lower subscapular
24
Q 
Teres minor...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: cranial/dorsal
Origin: lateral border of scapula
Insertion: greater tubercle
Action: laterally rotates humerus
Innervation: axillary
25
Q 
Deltoideus...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: cranial/dorsal
Origin: lateral half of clavicle
Insertion: deltoid tuberosity of humerus
Action: abducts humerus (also flexes, extends, rotates, and adducts)
Innervation: axillary nerve
26
Q 
Supraspinatus...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: cranial/ventral
Origin: supraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: abducts humerus
Innervation: suprascapular nerve
27
Q 
Infraspinatus...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: cranial/ventral
Origin: infraspinous fossa of scapula
Insertion: greater tubercle of humerus
Action: laterally rotates humerus
Innervation: suprascapular
28
Q

What are the muscles of the rotator cuff?

A

Supraspinatus
Infraspinatus
Teres minor
Subscapularis

29
Q 
What makes up part of the mass of the upper arm but DOESN'T actually cross the elbow joint? 
Quadrant:
Origin:
Insertion: 
Innervation:
Action:
A 
coracobrachialis
Quadrant: cranial/ventral
Origin: coracoid process
Insertion: midshaft of humerus
Innervation: musculocutaneous nerve
Action: adducts humerus and flexes at the shoulder
30
Q

Triceps brachii has 2 innervation. What are they?

A

radial nerve

axillary nerve

31
Q

Triceps long head…
Origin:
Quadrant:

A

Origin: infraglenoid tubercle
Quadrant: cranial/dorsal

32
Q

Triceps medial and lateral head…
Origin:
Quadrant:

A

Origin: posterior surface of humeral shaft
Quadrant: caudal/dorsal

33
Q

Triceps (in general)…
Insertion:
Action:

A

Insertion: olecranon process of ulna
Action: extends elbow

34
Q 
Biceps brachii...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A

Quadrant: cranial/ventral
Origin: short head=coracoid process
long head=supraglenoid process
Insertion: radial tuberosity of proximal radius
Action: flexes elbow and shoulder supinates
Innervation: musculocutaneous nerve

35
Q

What are the 3 layers of the wrist flexors (superficial to deep)?

A

Palmaris longus
Flexor digitorum superficialis
Flexor digitorum profundus

36
Q 
Palmaris longus...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: caudal/ventral
Origin: medial epicondyle of humerus
Insertion: palmar aponeurosis
Action: flexes wrist
Innervation: median nerve
37
Q 
Flexor digitorum superficialis...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A

Quadrant: caudal/ventral
Origin: medial epicondyle of humerus
Insertion: middle phalanges of fingers 2-5
Action: flexes wrist and middle phalanges
Innervation: median nerve

38
Q 
Flexor digitorum profundus...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: caudal/ventral 
Origin: anteromedial surface of ulna
Insertion: distal phalanges of fingers 2-5
Action: flexes distal phalanges
Innervation: median and ulnar nerves
39
Q

What are the layers of the extensors of the wrist (superficial to deep)?

A

Extensor digitorum

Abductor pollicis longus

40
Q 
Extensor digitorum...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A

Quadrant: caudal/dorsal
Origin: lateral epicondyle of humerus
Insertion: distal phalanges of fingers 2-5
Action: extends fingers and wrist; abducts fingers
Innervation: radial nerve

41
Q 
Abductor pollicis longus...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: caudal/dorsal
Origin: posterior surface of radius and ulna
Insertion: base of 1st metacarpal
Action: abducts and extends thumb
Innervation: radial nerve
42
Q

What are the muscles of..
Supination?
Pronation?

A

Supination: supinator and biceps brachii
Pronation: pronator teres

43
Q 
Supinator...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: cranial/dorsal
Origin: lateral epicondyle of humerus
Insertion: proximal end of radius
Action: supinates forearm
Innervation: radial nerve
44
Q 
Pronator teres...
Quadrant:
Origin:
Insertion:
Action:
Innervation:
A 
Quadrant: caudal/ventral
Origin: medial epicondyle of humerus
Insertion: lateral radius (midshaft)
Action: pronates forearm
Innervation: median nerve

Bio 223 (34 decks)

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